Nettle guide: where to find, how to pick nettles safely and recipe ideas

Discover our expert guide to nettles; their amazing properties, best time of year to forage, plus how to pick and cook nettles without getting stung

11th May 2017
Nettles

They’ve given us some of the most agonising experiences of our young lives as nippers and they continue to upset our own children and grandchildren, but nettles are more than just needled irritants.

The Cornish make a delicious cheese using them, the Nepalese make curries and some people even use them for clothing. Read on for our expert guide to nettles and then go nettle foraging!

When is the best time to eat nettles?

Nettles are best eaten when tender so early to mid Spring is when they're at their seasonal best. 

Why do nettles sting?

The British nettle carries its stinging barbs on the stem and the underside of the leaf for protection from those animals that might eat or uproot it.

Nettles

Native British nettles inject a cocktail of formic acid, histamine, acetylcholine and serotonin, and that is what causes the bobbly swelling and itchy skin we suffer when we brush up against it.

However, that is nothing compared to the effects some more exotic nettles have at their disposal.

On the island of Timor in south east Asia, one species of nettle causes lockjaw and a painful burning sensation, both of which can last for days or weeks.

Elsewhere, a native species on the Indonesian island of Java produces similar, but more potent results that can last for months and have even caused the death of some of victims.

Where does the word nettle comes from?

The Latin for the nettle plant is ‘dioica’. It means ‘two houses’ and is a reference to the fact that the male and female flowers are carried on separate plants.

It has been suggested that the term 'nettle' is derived from the Old English for needle – a reference to the stinging leaves.

Nettle facts:

1. Nettles are loved by butterflies

Red Admirals and Painted Ladies, Peacocks, Small Tortoiseshells and Commas are particularly fond of nettles. With butterflies on the decline generally, the plants provide an important food source for these pretty insects. They in turn help to pollinate our garden flowers and crops.

Ladybirds on nettles
Ladybirds live on nettles before they reach maturity

2. They help ladybirds do their job

While many green fingered folk see nettles as nothing more than weeds, they can actually provide gardeners with a vital tool to protect their plants.

Young ladybirds live on nettles as they grow and develop, using their foliage to hide from predators. When the ladybirds reach maturity, they venture further into the garden to eat the aphids that suck the sap from young plant growth. If you’re not keen on nettles running wild in your flowerbeds, why not create a ‘wildlife corner’, perhaps behind the shed in your garden or by the compost heap if you have an allotment? Leave it untended and help attract these beautiful and useful insects.  

3. Nettles keep fruit fresh

The leaves of nettle plants can, when used to pack fruit, help to keep it fresh and ripe, stifling and stopping mould from forming. Their high nitrogen content means they can also be used in compost, fuelling the bacteria to help them break down material more effectively and quickly.

Nettle tea
Nettle tea has a refreshing, delicate flavour

4. Nettles are delicious

Boiling nettle leaves into a tea is a popular way to extract their subtle flavour and getting rid of the sting at the same time. They have an earthy, wholesome flavour similar to spinach and other greens. Nettles are used to coat Cornwall’s delicious Yarg cheese, and in Northumberland the leaves are ground and sprinkled amongst cheese during production by one cheese-maker. Horse breeders have long fed nettles to horses to help provide a sleek coat, and in Sweden nettles are grown by farmers, dried out (causing them to lose their sting) and fed to dairy cattle, as it increases milk production.

5. They are natural archaeologists

Nettles will grow just about anywhere, but they prefer rich soils and benefit from the waste humans produce. In this way, the presence of large collections of nettles in the wild can sometimes indicate where settlements once existed. The site may not longer be visible on the surface, but the nutrients in the rich soil still provide the perfect conditions for the nettles.

6. Nettles are used in medicine

Nettles have traditionally been used for medicinal purposes by many cultures. Native Americans used the fresh leaves to treat aches and pains. European herbalists used the leaves in a similar fashion to treat gout and arthritis. Also, with the plant dried out to neutralize the acid in the sting, the leaves become a natural antihistamine. Some of these uses are now being scientifically tested, with some surprising results. 

Nettles as medicine
Nettles have been used as a natural therapy for centuries, and are now being incorporated as an ingredient in modern medecines

7. Nettle clothes, anyone?

The fibres in the nettle plant are similar to linen and can be spun into yarn - nettle fabric was used to make German uniforms in World War I. Scientists at De Montfort University in Leicester have used nettle fabric to make dresses in the past. Nettle yarn was often used to make tablecloths and bed sheets in Scotland and in Russia the juice from the plat has traditionally been used to create a green dye. A yellow dye comes from the roots.

nettle fertilizer
Nettles can be turned into a liquid fertilizer

6. They make perfect plant feed

Like comfrey, nettles make perfect liquid plant food. Fill a bucket with nettles and top with water. Within 10 days you'll have a thick dark brown liquid – rich in nitrogen and smelling like a heap of manure. Diluted with water (10 parts water to 1 part nettle juice) it makes a fantastic fertilizer, but be warned, it stinks!

7. Eating nettles is good for you

If the thought of stinky nettle compost isn't enough to put you off, then you really should try eating nettles because they're absolutely packed with nutrients. Not only are they high in Vitamin C, Vitamin A, and full of calcium, magnesium, iron, and potassium, they are also a good source of protein. Like spinach, when cooked, nettles reduce to about a quarter of their fresh amount when cooked, so a carrier bag full will yield about 500g/1lb when cooked. 

nettle picking
It's safest to wear gloves when picking nettles

How to pick nettles safely

Fancy an easy foraging adventure? Nettles may not be the first thing you'd plan for dinner, but these prickly plants are surprisingly tasty when cooked, and have a long history as a foodstuff. Native Americans would harvest the young plant in spring, and nettle cordial can be traced back to the Romans. Stinging nettles taste similar to spinach and are very good for you - they have an unusually high protein content for a vegetable and are rich in vitamins A, C, D, iron, potassium and calcium.

Nettles grow in abundance everywhere in the UK, and are easily recognisable. Take thick gloves!

Nettles are best when very tender, so pick them in the spring when the nettles are just coming up or later in the season when they’re growing well, but before they are flowering.

Use rubber gloves or pinch the leaves hard, so you don’t get stung. Pick the young leaves from the tips.

Lay the nettles out on a tray to wilt or wash them in hot water. Once wilted they can no longer sting you. The sting relies on erect hairs to penetrate the skin and inject the stinging formic acid. When wilted strip the leaves off the tough stems.

Always cook nettles to destroy the stinging acid. Nettles are not suitable for salads! and collect the biggest leaves, then wash them in very hot water, neutralising the stinging chemicals and making them safe to eat.


Nettle recipe ideas

Easy nettle soup

easy homemade nettle soup

Sian Lewis shares her favourite recipe for nettle soup, no stings guaranteed! 

Ingredients

  • 50g butter
  • carrier bag full of nettles
  • 1 onion, diced
  • 1 carrot, chopped
  • 2 celery sticks, chopped
  • 2 large garlic cloves, finely chopped
  • 1 potato, cooked and cubed
  • 1 litre stock
  • Spoonful of crème fraîche

Method

Wearing gloves, pick over the nettles and wash them carefully and thoroughly in hot water, discarding the tougher stalks. Melt the butter in a large pan and fry the onion, carrot, celery and garlic until soft. Add the cooked potato and the stock and pile in the nettles. Bring everything to the boil and simmer for 5-15 minutes, until the nettles are tender. Whizz in a blender and serve garnished with crème fraîche.

Nettle pesto

homemade nettle pesto
Photo: Getty

Nettle pesto can be made very simply - all you need to do is substitute cooked nettle leaves for the basil or baby spinach you’d normally use.

Ingredients

  • 50g fresh nettle leaves
  • 50g finely grated Parmesan or Romano cheese
  • 50g pine nuts or chopped walnuts
  • 100ml extra virgin olive oil
  • 3 garlic cloves, crushed
  • Salt and pepper to taste

Method

Steam or wilt the nettle leaves to remove the stinging properties and drain very well. Add the leaves and nuts to a food processor and pulse several times to mix. Add the garlic and cheese and pulse again. Scrape down the sides of the food processor with a spatula and add the olive oil slowly, while the processor is running, until the mixture thickens. Stir in salt and pepper to taste.

Crispy fried stinging nettles

bowl of crispy fried stinging nettles
©Jessica Graham

Light, crispy and delicious, eat as a snack or serve with a main meal. Especially good on top of a spring or summer salad.

Ingredients

  • A cupful of stinging nettles
  • Butter
  • Pinch of salt

Method

Heat a frying pan with one tablespoon of butter. When the fat begins to bubble, throw the nettles into the pan and add a pinch of salt. Cook for two or three minutes, turning frequently until the leaves start to turn golden and crispy. Place the nettles onto a paper towel to cool and dry.

 

Main image: Getty

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