A Christmas letter

christmasmoomin

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.

/home/wpcom/public_html/wp-content/blogs.dir/747/12715767/files/2015/01/img_6169.jpg

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…

goldpineconeonhive

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 new chapter begins

honeybeeinpencil1.1.15est crop

My first venture into the world of bees began before I was even born. At seven months pregnant, my mum remembers on a hot sunny day a beautiful big fat bumble bee landed on her bump. It sat there comfortably then started to crawl slowly up, before my mum asked a young man walking past to shoo the bee away.

After I was born, my mum took me out in the pram to lap up the sunshine of my first summer. She strolled along Oldfield Lane South, in Greenford, near to where Litton Local Nature Reserve is situated today. A small dark cloud appeared and a swarm of honeybees flew over my pram as I slept.

Our family moved around London over the years, but on a winter’s evening I found myself, now an adult, walking up Oldfield Lane South to Litton Local Nature Reserve to start an introduction to beekeeping course at Ealing and District Beekeepers. How funny that I was here again, where it had all begun, about to begin a chapter as a beekeeper.

That was six years ago. From my first hive bought from Ealing beekeeper Ian Allkins to the four colonies I now share with Emily Scott, keeping bees has opened up a treasure trove of discovery and adventure. Each year as the wheel has turned through the seasons, the secret life of bees has been revealed from spring to summer to autumn to winter to spring…

Today is New Year’s Day. In a matter of weeks the hives will be flying and the dance of the bees will bring the earth back to life as trees blossom and flowers open.

This year will bring exciting new possibilities and I can’t wait to start an all new chapter. My blog has changed as my life has changed, which is a good thing. Alongside those changes, I’m looking forward to rediscovering pastimes of drawing, painting, photography and aromatherapy, as well as writing about bees. I made a start today getting out my pencils and paper to practise drawing honeybees and comb before painting the hive boxes for spring.

Every season is full of promise and 2015 is going to be an exciting time. I wish you all health, happiness and a very Happy New Year!

A stocking filler from the bees

candle 1

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.

candle 2

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:

andys tweet

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.

christmassy2

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.

christmassy3

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!

christmassy1

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!

goodnight apiary

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.

The Queen’s Garden
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.

cover

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.

cover

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.

A winter’s tale

001

There is a bee legend handed down from bee generation to bee generation about the mysterious appearance of the great whiteness.

“Ooh the great sparkle,” say the bees as they see the twinkling stars and the early evening frost. “Get inside quickly before the instant freezing grips you in its icy hold.” Then they all settle down in their nice warm hives to listen to the tales about Jack Frost.

It is a fable, of course. Frost fell on the farm in Hereford last weekend. I imagined the bees belonging to the neighbours’ hives peering out at the frozen fields.

003

Yesterday was another beautiful winter’s day when Emily and I met for lunch in Ealing, back in London. A mushroom risotto warmed us before getting the bus to Perivale. The clear blue sky had a tinge of orange as the late afternoon sun shone through the tree tops.

Emily’s marmalade cake caused a stir among the murmur of beekeepers who had gathered for tea. “Your bees have been flying like hell,” said Stan, as I cut a slice of cake.

Another bee legend at Ealing apiary, Alan, gave Emily and I tips on insulating the hives with the foil bubble wrap. Here he is showing Emily how to cut squares around a queen excluder to fit into the roof.

003

Alan then helped us to fit the foil bubble wrap inside the roof of each hive. The colony will do a good job of keeping themselves warm in winter, but the foil will help to reflect the heat back into the hive. Hopefully, the bees will feel even more cosy.

004

Bees tucked in for winter, I got a surprise by lifting the roof off an empty hive to put away some equipment. A sleeping wasp with her wings folded neatly by her legs. A bit further along the wood was a desiccated spider and a ladybird who may have died in suspicious circumstances… What dark fairy tale had unfolded?

005

I gently placed the roof back on the hive to not disturb the sleeping beauty. She looks small for a wasp queen, perhaps a worker who had abandoned her dying nest? In any case, few hibernating wasp queens survive the winter, either succumbing to the cold or spiders, she’ll have as good a chance as anyone else.

The hives had become still as Emily and I got out the chicken wire to make a start on wrapping the bees for Christmas. The dusk was chasing away the day.

006

… As usual and as happened every year, there were those bees who didn’t heed the warnings of the legend. They got caught by Jack Frost’s creeping, sometimes sudden, appearance. The late returning foragers caught frostbite on their wings, or even worse turned into instant bee statues. Those whose wings were caught could only be saved if they happened to be on the hive, so they could walk in and thaw. These lucky bees were the ones who told the tales that were handed down.

007

It is a story, of course, as we left the quiet hives behind us to keep their winter secrets.

Winter studies: A chat about the small hive beetle

There are few things that could be worse than finding varroa in your hive, but the small hive beetle (SHB) may come close. This unpleasant squatter, which originated in sub-Saharan Africa spreading to Australia and US, has been sighted uncomfortably close to home in Italy. What is SHB and why don’t we want it?

“It is small, only about 5.7mm in length, black and with tiny clubbed antennae. Each female beetle can lay up to 1,000 eggs, hidden away in crevices in the hive or laid in comb containing pollen or brood. These hatch, after a few days, into tiny larvae which feed on bee eggs and larvae, pollen and honey, tunnelling through the wax in the process…Their faeces get into the honey, causing it to ferment and become frothy and unusable, even for bee feed. There is no webbing, as with the wax moth larvae…but the combs become slimy and the beetles, in addition to weakening a colony and depleting it of brood and/or stores, can become a serious threat to survival.” The Honey Bee Around and About Celia Davis

That makes the wasps bothering our bees seem positively nice! So what’s the chance of SHB causing problems in the UK?

BeeCraft, the magazine of British beekeepers, held a chat about SHB as part of their BeeCraft Live series. The BeeCraft team were joined by University of Florida researcher Jamie Ellis to chat about what impact SHB might have on British beekeepers if it does arrive in the UK.

I was hopeful from this general chit-chat that beekeepers in the US and Australia have learned to live with SHB, and that our cold damp climate might be in our favour for a nasty squatter that doesn’t like long winters. EDIT: However, in the comments below some beekeepers have found SHB may be fairly resilient to the cold, that where it has brought down colonies it can be devastating, and suggest that we do need to be vigilant in ensuring it doesn’t arrive on the UK. I wholeheartedly agree with that!

Watch more BeeCraft Live episodes here and find out when the next one is taking place at #BeeCraftLive.

Winter studies: The poison honey

Bee Anthophora RCP06-07 085

© 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.

Bee Anthophora RCP06-07 089

© 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’.

Rhododendron and clouds in Japan

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).

Manaslu-Circuit_Rhododendron_Forest

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.

OLYMPUS DIGITAL CAMERA

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.

OLYMPUS DIGITAL CAMERA

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?

Ranunculus_macro

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.

Abies_alba_Schleus_Berg_b_Suhl_ThW_Th_Dreger

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).

003

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.