Sophie Merkens

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Sophie Merkens Photographer | Author | Foodie |
Author of EAT WILD and GROW

I’ve written a small tribute for Yoon Lee on substack today (free, link in bio). We lost one of our gardeners this last ...
04/11/2026

I’ve written a small tribute for Yoon Lee on substack today (free, link in bio).

We lost one of our gardeners this last week. An amazing man called Yoon Lee.

Yoon had been part of the community gardens for many, many years and was always a delight to talk to. His style of gardening was wild, grounded in permaculture and food forests. He grew all sorts of plants from across Asia – bitter melons, turmeric, ginger, giant passionfruit, gourds – and was very, very generous with his cuttings. I have a little guava tree, ready to go into the ground, that he gifted me this winter. I’ll be planting it this week, thinking of him. Hopefully it will fruit and I can rejoice in Yoon’s guavas for years to come.

Yoon sometimes ruffled feathers at the gardens. His plot wasn’t cookie-cutter, with everything planted neatly in rows. There is more than one way to garden. Instead, it was wonderfully wild, vivacious, abundant, challenging and absolutely organic in every sense of the word. I freaking LOVED IT.

Yoon would bicycle everywhere with his trailer in tow. He built structures for plants to climb. There were seven-metre bamboo arches at his big plot for pumpkins, squash and melons to grow up over the summer months. I once asked him how he got those giant bamboo poles there, and he replied that he towed them on his bicycle, on a main road, in the middle of the day, on a weekend, some six kilometres from his house to the garden. This would undoubtedly have upset traffic, but it delights me so very much. Yoon was one-of-a-kind.

I don’t have a tonnes of photos of Yoon’s garden, nor many of him, but here are some of his taro plants and giant savoury melons, bigger than half my torso. (Continued in comments)

03/11/2026

A reminder to mulch your garden. Use what you have access to like: compost, seaw**d, coffee grinds, sheep’s wool, plants (like chopped up tithonia), hay or pea straw.

Another powerful benefit of nettle? 🐝
03/11/2026

Another powerful benefit of nettle? 🐝

Stinging Nettle vs Varroa Mites: Could This Common W**d Help Save Honeybees?

I made a spontaneous Stinging Nettle harvest this week, making the most of all that fresh spring growth.

Not only do I love the medicinal and nutritional properties and uses of fresh Nettle, but it's also the host plant for the Admiral butterfly, and I enjoy watching the constant stream of Admirals flittering around the garden.

But here's something I didn't know about this humble wild plant!

Someone mentioned in a comment on one of my recent posts that Stinging Nettle might help protect honeybees from Varroa mites. It caught my attention, so I did a little digging and discovered some fascinating scientific research published in 2025.

And it's particularly interesting because Varroa mites are one of the biggest threats facing honeybees worldwide.

These tiny parasitic mites attach themselves to honeybees, feed on their fat body tissue, weaken their immune systems and spread destructive viruses. They can devastate entire colonies and are a major concern for beekeepers.

So, could one of our common wild w**ds hold some potential in helping tackle this problem?

The study, conducted in Egypt, investigated two different ways of using Stinging Nettle (Urtica dioica) to control Varroa mites.

The first involved spraying the bees with a specially prepared ethanol-based extract of nettle leaves.

The second involved burning dried nettle in a bee smoker and introducing the smoke into the hive.

Both treatments produced significant reductions in Varroa mite infestations.

After three weeks, the nettle extract reduced mite infestations on adult honeybees by almost 89%, while nettle smoke achieved a reduction of around 76%.

Even more interestingly, when researchers examined the sealed brood cells, where Varroa mites reproduce, nettle smoke achieved an impressive 95% reduction.

The researchers also compared these treatments with formic acid, a commonly used Varroa treatment. Formic acid achieved complete mite reduction in their experiment, but was associated with higher honeybee mortality and increased markers of oxidative stress.

The nettle treatments appeared considerably gentler on the bees, with lower mortality and encouraging results for colony health.

Stinging Nettle is packed with biologically active compounds, including flavonoids, phenolic acids and other plant chemicals with antioxidant and insecticidal properties.

The researchers used chemical analysis to identify 23 compounds in their nettle extract, several of which may contribute to its ability to affect Varroa mites.

What a cool example of how much potential there is in the plants growing around us, including those we so often dismiss as w**ds.

Of course, this is still early research, based on a relatively small experiment involving 12 hives in Egypt. Further research is needed before nettle can be recommended as a reliable Varroa treatment or used as a replacement for established beekeeping practices.

But I love discovering research like this. A reminder just how useful the plants growing around us really are!

And meanwhile, I'll continue harvesting my spring Nettle for its wonderful nutritional and medicinal qualities, while leaving plenty in the garden for the butterflies!

If you'd like to learn more about identifying, harvesting and using Stinging Nettle, it's featured in my All Seasons Edible W**ds Foraging Guide.

Comment WILD and I'll send you the link to my foraging resources on the Wild Botanica website.

Follow Wild Botanica

30/10/2026

Onion w**d. Yay or nay?

Today’s wealth… harvesting purple cauliflowers from the garden. 💜
29/10/2026

Today’s wealth… harvesting purple cauliflowers from the garden. 💜

27/10/2026

A recent 10/10 coffee spot

22/10/2026

Often my work is pretty fun and interesting. As was the case when photographing my friend and ultra talented author Liv Sisson releasing an endemic kahukura red admiral butterfly. Pics for her new book ‘Butterflies and Moths of Aotearoa’ 🦋

18/10/2026

Sharing a few highlights from Eat Wild…

18/10/2026

Making nettle pasta from Eat Wild.

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