Venice, city of water and light

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In the cold month of February comes St Valentine’s Day, the 14th, with skeleton trees in parks and plants shrivelled away by frost. It seems a strange season to celebrate romance, but I saved this pretty picture post for when winter should be stirring with thoughts of spring.

In December I was whisked away for a birthday surprise to Venice. John had planned the trip in secret, revealing our destination last-minute at the airport. I was so excited – Venice, an impossible city floating on the water, just a few hours away by plane.

John is a seasoned traveller, but even he was struck by the uniqueness of Venice. Our boat bus took us past brightly coloured buildings along the canals, water seeping in doors and lapping at shuttered windows. The city, said to be founded with the dedication of the first church at the stroke of noon on 25 March 421, is built on 117 islands linked by bridges across waterways.

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We stayed at Piazzo St Marco, the main public square with gulls flying over the famous Basilica during the day and fairy lights illuminating passage ways at night. Walking in Venice is the best way to get around the little streets and bridges. It is a quieter place in winter with fewer tourists and, of course, no cars. Breakfast views of early morning gondolas to night-time scenes of beautiful moonlit palaces, Venice is a jewel of old world charm, art and architecture, culture and history. Here’s our holiday highlights…

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As travellers we felt welcomed by the local culture and traditional way of life.

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Of course, we had to do the tourist thing.

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How’s this for romance? The house where George Clooney married Amal Alamuddin.

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A short island hop took us from the main city to Murano, a beautiful paradise of rainbows and glass.

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And twilight had so many colours mirrored in the skies and seas.

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Venice by night is magical, like stepping back in time. I felt truly spoiled – thank you John for the most wonderful birthday surprise!

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We needed only a few days to become familiar and fascinated by Venice. Flying away from the city of water and light, John found a video that explained: How does Venice work? Enjoy watching Venice backstage…

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A beekeeper’s notes for January

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We’re into January and it’s wild and windy. Storms urge on the rain and frosts strengthen the cold. On some days the sky is covered in a grey blanket and on other days it is crystal blue.

At the apiary the green netting that separates the bees from the communal area had almost fallen down. The shape of hives seen through a veil of hazy sunshine was enchanting, but there was tea and a panna cotta cake on the table.

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I love spending a Saturday afternoon at Ealing apiary. It is like a pocketful of country life with beekeepers sharing stories about winter bees and swopping homemade recipes for jams and, in particular, marmalades.

Elsa was going to Greenford market to forage for Seville oranges and she got a good tip from John on using up frames of crystallised honey: “It’s all good for marmalade”.

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John Chapple looking cosy in a Christmas pudding hat and a tea-filled Tigger mug.

But the shorter daylight hours in January means beekeepers have less time to stand around and chat, and those beguiling bees were waiting for us, behind the curtain in the fading sun.

Beekeepers have few tasks for January but they are important. First, we unwrapped the chicken wire from the hives and checked under the roofs. Emily and I had put on a second block of fondant on each hive two weeks ago. Melissa’s and Pepper’s bees had made a hole in theirs, but Chili’s and Chamomile’s bees were slower eaters. The heat coming off the crownboards was remarkable and reassuring. We could see and feel that our bees are warm and well-fed.

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Melissa’s bees have eaten their way through to the second block of fondant, although the hive is still heavy with honey stores. I suspect that they just like nibbling icing sugar!

I hefted the weight of each hive and put in a varroa board to monitor for levels of mite infestation next week, and Emily checked the entrances were clear of debris and dead bodies. Entrances sometimes get blocked and make it difficult for bees to come and go on cleansing flights or pollen-collecting.

That done, we wrapped up the hives in chicken wire again to prevent hungry woodpeckers from pecking at the wood. I’m sure any local woodpeckers have easier treats to find than tasty bee colonies in this mild winter, but better to be safe than sorry.

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While the wintry weather is setting in, the snowdrops on the ground and the green buds in the trees whisper that spring is fast approaching.

The next few weekends will be about clearing out and mending old hive boxes, making up new frames, cleaning kit and getting fresh record cards for the year’s work ahead. I suspect the bees will be coming out of winter soon.

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My insect reflection

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The frost arrived as silently as the dew on a crisp and cheery morning in December. I grabbed my camera and raced outside, struck by the simple beauty of sparkling crystals of ice on earth, grass and leaves.

Winter is a surprising season for photography. The sun is low in the sky, the light is soft, and the colours and textures subtly blended. But my eyes were drawn that day to a hidden world of star-like beauty and wonder.

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Frost is dazzling in macro. A million little crystals of glittering frozen icicles on mosses and grass. I got out the extension tube to fix to my standard kit lens and zoom in closer, with elbows rested on knees for a make-do tripod. My shoestring macro method worked. Look, nature is magical even in a patch of scrub growing next to a concrete car park.

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For me spending time in nature can help to bring a positive perspective. There are amazing things to be seen from the smallest to the largest objects in the universe. How do you compare the spectacular rings of icy water droplets swirling around a gas giant planet to the simple crystallisation of water on a frosted flower?

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The sharp delicate flakes shone like stars. I can understand the frosty glow must be a lure to the light-receiving ocelli eyes of a bee as she peeks out of the hive and sees the ground glistening on a winter’s day.

I’ve heard it said that each sugar crystal of honey too is as unique as a snowflake.

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Getting into macro photography lets me imagine the world through the eyes of the smallest creatures. How differently does life appear to a bug in all its wonderfully infinite and diverse combinations? In their tiny environments do they see nature more widely than we can?

I hope 2015 brings more time to notice the simplicity and beauty in the world around us.

A Christmas letter

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Once again Christmas in Hereford was a magical experience. We arrived from London in time for the candlelit carol service on Christmas Eve. A starry sky and glowing barns lit up the muddy foot path to Amberley Church. We sang as the cows grazed contentedly outside and the fairy lights twinkled inside.

Christmas Day was another beautiful day of bright sunshine and blue skies. It was bitterly cold but that didn’t matter with a log fire roaring in the living room. After dinner, we watched The Queen’s Garden on ITV, presented by Alan Titchmarsh, for an appearance by John Chapple, Queen’s Beekeeper and Ealing member.

A bee on the thumb of Royal Beekeeper John Chapple, taken at London Beekeepers Bee Health Day.

A bee on the thumb of Royal Beekeeper John Chapple, taken at London Beekeepers Bee Health Day.

Alan Titchmarsh spoke to John about keeping the royal bees as he helped to harvest honey from the hives. “Nectar of the gods,” said John, scoring honeycomb with his hive tool. Alan described the taste of the honey as like “dessert wine” and asked what made it so good. John explained that there’s a large variety of trees and plants in the royal gardens at Buckingham Palace, which gives the honey a unique flavour: “If it’s in here, the bees will find it, and we’re tasting it”.

The honey is used in the Queen’s kitchen and she has even given some to the Pope. John must be very proud. It was a pleasure to watch him talk about the bees on TV just as he does at Ealing apiary. Andy Pedley was also there on the day of filming and is John’s Assistant Royal Beekeeper. (Thomas Bickerdike says you can hear John tell Andy to put the queen back in the hive!)

If you missed the Royal Beekeeper on Christmas Day, The Queen’s Garden episode 1 is available to watch here for the next 30 days. My work is just round the corner from Buckingham Palace and I enjoyed watching the hidden treasures of its gardens.

John Chapple is well-known authority on beekeeping and he gave our new queens the thumbs up.

Here’s John Chapple inspecting our bees at Ealing apiary with beekeeper Rosemary watching.

It rained on New Year’s Day washing the world clean outside my window. The first Saturday back at the apiary I had a cold and it was drizzling, but that didn’t dampen my spirits or those of the beekeepers chatting over tea and a table of Christmas leftovers. I was also wearing my new Joules bee wellies, a Christmas gift from my boyfriend John’s mum, which were much admired by the women beekeepers.

Jonesy and Albert were giving their bees oxalic acid. “You’ve already poisoned your bees, I hear,” grinned Thomas. “Yes” I said, “But they are on a January detox.”

Emily and I checked the varroa boards under our hives to find varying results of mite drop. Still it is good to see mites on the board rather than in the hives. It has been an unusual winter, the bees haven’t slowed down much and already I saw signs of buds and blossom in the bracken. Here are more Ealing beekeepers at work on the first cold rainy Saturday of January.

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There was more to tell of this afternoon’s beekeeping, but I’ll leave those stories of craft and sneaky bees to Thomas and Emily to reveal on their blogs.

I had brought new fondant for the bees, who had mostly munched their way through the first block. The warmer autumn might have meant that they had used their winter honey stores more quickly.

We followed John’s tip of cutting a hole in the middle of the old block and the new block, then carefully placing the new fondant on top for the bees to crawl through. This helps to avoid squashing the bees by removing the old fondant and putting on new fondant.

Our four hives are doing very well this winter and I am hopeful that they will be strong in spring. John has said, wryly on occasion, women make the best beekeepers because we are gentle and patient with the bees, although I learned that from him. He also attributes our good fortune at Ealing apiary to witchcraft! I’ll leave you to decide which is true…

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In more good news, another Ealing beekeeper is blogging – the inspiring Matwinder Randhawa tells us about her travels in Postcards from San Francisco. Do join her “journey of unbelievable adventure and beauty” in 2015.

A stocking filler from the bees

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Today is the winter solstice, the shortest day and the longest night of the year in the UK. For a moment the Earth tilts furthest away from the sun in the northern hemisphere, before it turns back towards the light.

My pagan friends celebrate the winter solstice, Yule, by lighting candles to mark the sun’s rebirth. While it is a long time till spring from this point on we can all welcome back the lengthening of days.

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I’m not pagan, well maybe a tiny bit…

In beekeeping traditions the darkest day of winter is a point of stillness inside the hive. The queen has stopped laying and the workers cluster around her in a broodless nest. A perfect time to give the bees a solstice stocking filler of warmed oxalic acid in syrup.

Yesterday was bright, cold and dry at the apiary. The beekeepers were feeling festive as they ate mince pies and drank home-brewed beer. Everyone was soon very merry!

Andy Pedley was amused that I had decorated our hives a few weeks ago with pine cones and berries to look Christmassy, he tweeted:

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There also had been exciting news from Andy during the week, he wrote: “This might justify a special email?” He and John Chapple had been interviewed for Alan Titchmarsh’s The Queen’s Garden, which airs on Christmas Day at 3.10pm on ITV. Wow, beekeeping royalty to follow the Queen’s speech. I can’t wait till Christmas! (You can see John Chapple looking like Father Christmas in his red coat and white beard above.)

Elsa helped us to warm the oxalic acid that we were giving to the bees by standing the bottles in an upturned lid of a teapot. As we marvelled at her practicality, she said in her gentle Australian accent, “I wasn’t a Girl Scout, but I was raised in the bush”.

The sun was dropping fast through the trees and the mince pies had all been eaten. It was time to give the bees their stocking filler.

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I’ve blogged about giving the bees oxalic acid before, this year two beginners gave it to the hives. They will make excellent beekeepers. The oxalic acid is meant to burn the mouths and feet of varroa mites feeding on adult bees, so they drop off. It is given in midwinter when the colony is thought to be almost broodless and the varroa mites have fewer places to hide.

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Some beekeepers now check their hives for brood a few days before giving the oxalic acid following last year’s findings by Laboratory of Apiculture and Social Insects (LASI), which caused something of a stir among beekeepers. The research suggests any time between 10th December and Christmas is a good time for oxalic acid treatment and that you check for sealed brood, and destroy it, around two days before. I hadn’t forgotten the advice but we didn’t do this. I could tell by looking at the way the bees were moving around and over the frames that there is likely to be sealed brood inside the hives. Perhaps it is a knock-on effect of a longer brooding season due to a milder autumn and winter? What effect that will have on the oxalic acid treatment, I don’t know.

Even so, all’s looking well inside the four hives. Chili’s bees were playful, Melissa’s bees were peaceful, Chamomile’s were curious (a good sign) and Pepper’s were spirited!

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Merry Christmas lovely bees!

This is my last post of the year as I take a break for Christmas. So, as an aromatherapy beekeeper, I’ll leave you with a picture of the apiary on the darkest day in winter and a stocking filler from the bees – a home-made honey-and-lavender lip balm that you can make quite easily. The recipe is in the Postnotes below, along with more details about The Queen’s Garden.

All that remains to be said is a Very Happy Christmas bees, humans and everyone!

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See you all in the New Year xx

Postnotes

Home-made honey-and-lavender lip balm

Ingredients:

  • 40 ml olive oil
  • 10 g beeswax
  • 1 tsp honey
  • 10 drops lavender essential oil

Method:

  1. Heat the oil gently in a saucepan over a low heat.
  2. Add the beeswax, stirring till completely melted.
  3. Mix in the honey then pour into a warmed bowl.
  4. Add the lavender essential oil and stir quickly before the balm starts to set.
  5. Pour the warm balm into small pots and leave to set, then lid and label your honey-and-lavender lip balm.

Of course, the lip balm is meant as a gift – you can’t sell home-made cosmetics without special safety requirements. As an added precaution too, skip the lavender oil if you are pregnant. Aromatherapy texts differ on which essential oils to use in pregnancy and at which stage of pregnancy, and the proper advice is actually a lot more involved than this. I’m not going into that now, so skip the lavender to be on the safe side – the balm really is as nice just as honey and beeswax.

The recipe is also posted on the Ealing and District Beekeepers’ website which I run, as a news item along with a link to the recent Bee Craft live episode on using hive products.

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Don’t forget to watch The Queen’s Garden on Christmas Day! Elsa is sure from a preview that you’ll at least see John Chapple, the Queen’s Beekeeper, pull a frame from a hive!

The Queen’s Garden
Thursday 25th December at 3:10pm on ITV
Queen’s Garden, Episode 1: The first of two programmes in which Alan Titchmarsh gets exclusive access to the royal gardens at Buckingham Palace for a whole year. He watches the garden change over the four seasons and reveals its hidden treasures that have evolved over five centuries. In the first part, he arrives along with 8,000 others to attend the Queen’s summer garden party, but unlike the other guests, he has a different itinerary. He begins by venturing into the garden’s wilder spaces where nature has been left to rule. He meets the Queen’s bee keeper John Chapple, delves into the history of the garden and finds its oldest tree. Late summer is the ideal time to visit the rose garden with its 18th-century summer house. Later, as Christmas arrives, Alan helps royal florist Sharon Gaddes-Croasdale bring in plants to decorate the palace.

Download a free ebook stocking filler here, a Christmas gift from me and the bees.

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A Christmas gift from the bees

It has been a fantastic year of beekeeping. To celebrate I’ve made a book to say thank you to everyone for reading my blog. I’ve enjoyed sharing the ups and downs, queens and swarms, honey and drones, with you all. This is a gift from the bees.

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The industrious honeybee has inspired people for centuries, while the treasures of the hive bring sweetness in honey and light in candles. What is life like through the compound eyes of the bee? This little book of bee magic journeys through the honeybee year, from season to season.

You can download the ebook for free on Blurb books here to read on iBooks for iPhone and iPads. Or send an email using the form below and I will send you a copy of the ebook. I’ll wait a week to receive everyone’s requests before sending copies.

This is my first ebook, I hope you have as much fun flipping through the pages as I did making them. Let me know what you think, because I’m planning more ebooks with all funds raised donated to a charity Bees for Development.

Winter studies: The poison honey

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© Dr Henry Oakeley

“In the summer, in the College garden, the woolly foxglove, Digitalis lanata, is visited by little bees which become stuporose and lie upside down in the flowers, seeming unable to fly away when disturbed.” –Dr Henry Oakeley, Garden Fellow at the Royal College of Physicians (RCP) Medicinal Garden.

I became fascinated with the idea of ‘poisonous honey’ when I worked at the College. Watching bees foraging on the intoxicating inhabitants of the physicians’ Medicinal Garden, my imagination ran wild with thoughts of insects tempted by sinister sweetness, putrid pollen and foul fruit. What seductively dark nectar would the bees return to the hive to convert into undesirable honey? When I asked Henry, he told me the story of the bees in the woolly foxgloves and he kindly sent two beautiful photographs taken in the College garden.

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© Dr Henry Oakeley | Poison honey and a whodunnit bee too, how exciting! Anthophora or Anthidium manicatum? See Mark’s comments below.

The colour and flavour of honey comes from the variety of nectar sources visited by the bees. From spring mint and summer blackberry to autumn woods and bitter ivy, the taste and smell of honey can evoke intense reactions, not always good. The strong flavour of privet honey, for example, is described as ‘objectionable’ in Collins Beekeeper’s Bible, while Ted Hooper in A Guide to Bees & Honey confesses: “I cannot say I have ever found much wrong with it”. But whether you like ivy, heather or rapeseed, ‘unpalatable’ honey is a matter of personal taste.

What, then, of honey with truly ‘undesirable’ qualities from the nectar that is gathered, being harmful to bees or humans, or both? In this post, I’m going to look at the possible toxicity of honey from the nectar or pollen of plants rather than artificial contamination.

“Just when you thought that honey was always a wonderful health food,” says Henry, pointing me in the direction of rhododendron – a common culprit of toxic honey that can be harmful to bees and humans. According to Wikipedia, a chemical group of toxins called grayanotoxins found in rhododendrons and other plants of the family Ericaceae may, very rarely, cause a poisonous reaction of ‘honey intoxication’ or ‘rhododendron poisoning’.

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Image: Rhododendron and vast clouds in Japan | 松岡明芳 via CC BY-SA 3.0.

Xenophon and his Greek army retreated ill from Persia in 399BC as a result of ‘toxic honey’ and Pompey’s soldiers fell foul of ‘maddening honey’ in the Third Mithridatic War in 65BC. These historical accounts name varieties of rhododendron honey as causing a “feeling of drunkeness, to vomiting and purging, and madness that lasted for days” (Collins). A botanist’s tale of poison honey is given by Frank Kingdon-Ward (1885–1958), during his travels in northern Burma towards Tibet. He recounts symptoms similar to acute alcohol poisoning, suffered along with his travelling companions, after eating honey produced in the rhododendron season. The local Tibetans ate the honey without ill effects (Collins).

Piers Moore Ede vividly describes sipping the ‘wondrous toxic honey’ of rhododendron flowers collected by the honey hunters of Nepal: “It resembled drunkenness at first, but then became visual, like a magic mushroom trip I remembered from university. Painted dots were dripping across my irises like technicolor rain. My body felt light and tingly, filled with warm rushes and heat-bursts. It was wild and strangely wonderful” (Honey and Dust: Travels in search of sweetness).

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Image: Rhododendron forest on Manaslu circuit, Nepal | Spencer Weart via CC BY-SA 3.0.

An incident of poisoning reported in honeybee colonies on Colonsay Island off west-coast Scotland in 1995, referenced in Yates Beekeeping Study Notes (Modules 1, 2 & 3). “The bees had died out completely in 2–3 days after starting to collect nectar from Rhododendron blossoms (Rhododendron thomsonii) caused by the poison andromedotoxin or acetylandromedol.” Ted Hooper writes on the case of Colonsay Island’s bees: The West of Scotland College of Agriculture Study showed that the poison andromedotoxin was involved”.

It sounds like rhododendrons are not a desirable source of forage for bees! However, to put the risk of honey poisoning from rhododendron, or any other toxic plant, into perspective, I asked John Robertson of The Poison Garden website: “Put simply, something has to go wrong for toxic honey to be produced and then it has to go wrong again for it to cause human poisoning.” OK, so what can go wrong?

“The first thing that has to go wrong is to have a lack of species diversity. Generally, bees visit so many different plants that they don’t get a concentration of any particular toxin. This can go wrong, as in the west of Scotland, where Rhododendrons are almost the only thing in flower early in the spring. But, nectar from Rhododendron is toxic enough to kill the bees so they tend not to return it to the hive. Experienced beekeepers know not to let their bees out at this time of year. I haven’t seen any reports of poisoning from honey made from Rhododendrons.” John writes more on The poison garden blog, entry for Tuesday 27 September 2011.

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Image: Coriaria arborea | Rudolph89 via CC BY-SA 3.0.

Both John and Henry brought my attention to honey from the tutu tree (Coriaria arborea) in New Zealand, which could cause harm to humans, but this is due to the unusual way in which the honey is produced by insects. John says:

“Bees collecting nectar directly from the plant do not produce poisonous honey. But, a vine hopper insect also feeds on the nectar of the plant and excretes a sweet ‘honeydew’ containing a high concentration of plant toxins. Especially in times of drought, bees may gather this honeydew rather than nectar from the plants. Because this is a well-known problem, however, there have been no instances of poisoning from commercially produced honey since 1974. When four people were taken ill in 2008, the source was traced to honey produced by an amateur who was not aware of the problem. Another instance of the flaw in the belief that the more ‘natural’ something is the better it is for you.” Read more on The poison garden blog, entry for Thursday 30 June 2011.

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Image: Drone fly (Eristalis tenax) – not a bee! – on ragwort flowers | Francis Franklin via CC BY-SA 3.0.

Rhododendron is not the only mischievous plant in the garden. Yates lists common ragwort (Senecio jacobaea) in its section on unpalatable honey as “an injurious weed in the Weeds Act 1959, is poisonous to cattle and horses causing damage to the liver with pyrrolizidine alkaloids“. However, bees work the blossom for nectar and pollen with no ill effects to produce a bright yellow honey with an unpleasant smell.

What other mutinous plants, then, produce nectar and pollen that is harmful to the bee?

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Image: Ranunculus macro | Laura Brolis via CC BY-SA 3.0.

The innocent-looking buttercup that pops-up in spring has bitter tasting leaves from a toxin called protoanemonin present in the sap. In 1944 in Switzerland, spring dwindling, or ‘May disease’, occurred after bees brought home pollen from the Ranunculaceae family (buttercup): “Nurse bees appeared at hive entrances trembling and unable to fly, excitedly moving on the landing board, losing control of their legs, rotating violently on their backs, becoming paralysed and dying. The leaves of most species of buttercup are poisonous and avoided by livestock” (Yates).

As the reference to this case is old, I dug deeper for something more recent. I found a study in the journal Functional Ecology, published by Wiley-Blackwell, which showed the contradictory effects of buttercup pollen and viper’s bugloss pollen in two closely-related species of mason bees: “While the larvae of Osmia cornuta were able to develop on viper’s bugloss pollen, more than 90% died within days on buttercup pollen. Amazingly, the situation was exactly the opposite with the larvae of Osmia bicornis” (Science Daily press release). The researchers suggested that some flowering plants used chemical defenses to prevent all their pollen being used by the bees to feed their larvae, rather than to pollinate the flower.

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Image: Abies alba Schleus Berg | Thomas Dreger, Suhl via CC BY-SA 3.0.

In 1951 another account of bee poisoning was reported in Switzerland, this time from the silver fir (Abies alba), which is a source of honeydew toxic to bees. “Thousands of returning foragers, with a waxy black appearance, were reported dying outside hives.” It was thought that sap-sucking insects feeding on the silver fir had converted the plant sap into sugars toxic to the bees (Yates). I was unable to find a more recently reported incident of silver fir honeydew poisoning in bees, although I came across a website that said silver fir honeydew honey is an “excellent table honey that goes well with cheese”. Is Abies alba still foraged for honey? If anyone has further information, I’d be interested to know.

In California, the pretty blossom of the buckeye chestnut tree (Aesculus californica) wickedly beckons bees to feed from its nectar and pollen: “The bees become black and shiny, trembling and paralysed. Non-laying queens, dying brood and infertile eggs have also been reported. As this species covers 14 million acres in North America its effects on honeybees are well known to local beekeepers” (Yates). You can read more about the buckeye chestnut tree and the honeybee in this interesting article by the University of California’s Bug Squad.

Then there is the mountain laurel (Kalmia latifolia), native to eastern US, introduced to Europe as an ornamental plant, and toxic to bees, humans and livestock due to the presence of andromedotoxin which could accumulate in the honey (Yates). However, the honey is reportedly so bitter that it’s unlikely to be eaten and cause poisoning (Wikipedia).

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All in all, it seems you’re more likely to come across a ‘poison honey’ in an episode of Poirot than find it on your breakfast table. John comments that the taste and texture of ‘bad’ honey, such as from common ragwort which “is waxy and unpleasant”, is probably enough to prevent anyone from eating too much of it. That, then, puts the lid on a fascinating topic.

With thanks to
A huge thanks to Dr Henry Oakeley and John Robertson for generously sharing their vast knowledge of plant lore for this post. If you’re interested in reading more about poison gardens or exotic plants, check out the links in the reading list below.

EDIT 19.01.15: And if you enjoyed reading my post, thank you. I’ll be making some edits to the information given here in due course in light of further information.

Further reading
A tour of the medicinal garden of the Royal College of Physicians by Dr Henry Oakeley, published by RCP
A year in the Medicinal Garden of the Royal College of Physicians by Dr Henry Oakeley, published by RCP
Rhododendron yakushimanum ‘Grumpy’ from RCP Medicinal Garden online plant database by Dr Henry Oakeley
The Poison Garden website posts by John Robertson from Thursday 30 June 2011 and Tuesday 27 September 2011
Toxic honey entry in Wikipedia
Collins Beekeeper’s Bible by Philip Et Al Mccabe, published by HarperCollins
A Guide to Bees & Honey by Ted Hooper MBE, published by Northern Bee Books
Yates Beekeeping Study Notes (Modules 1, 2 & 3) by JD & BD Yates, published by BBNO | (Yates recommends further details on undesirable nectars can be found in Honey Bee Pests, Predators and Diseases by RA Morse and R Nowogrodski, published by Cornell University)
Honey and Dust: Travels in search of sweetness by Piers Moore Ede, published by Bloomsbury
Claudio Sedivy, Andreas Müller, Silvia Dorn. Closely related pollen generalist bees differ in their ability to develop on the same pollen diet: evidence for physiological adaptations to digest pollen. Functional Ecology, 2011; DOI:10.1111/j.1365-2435.2010.01828.x | sourced via Science Daily press release.
• University of California’s post on buckeye chestnut tree and the honeybee from the Bug Squad
Mad honey poisoning‐related asystole from US National Library of Medicine | National Institutes of Health
• Emily Scott of Adventuresinbeeland’s Blog has written a brilliant post on 1st Honey bee products and forage revision post: a list of floral sources of unpalatable honey;

Further winter studies for bees can be found in my blog index.