SGUK Outdoor Skills Challenge 80: Identify Poisonous Autumn Berries

Autumn hedgerows can be full of colourful berries, but bright red, purple and black fruits aren’t necessarily safe to eat. Some poisonous plants grow in parks, woodland edges and gardens, where their berries can look tempting to children, adults and even experienced walkers who haven’t learnt to identify them properly.

This challenge is about recognising some common UK plants that produce poisonous berries and learning how to observe them safely. You won’t need to pick or taste anything during this challenge. The aim is to improve your identification skills and understand why an unfamiliar berry should never be treated as food simply because it looks familiar.

Your Challenge

Identify at least three UK plants that produce poisonous berries in autumn. Learn the main features that help distinguish each plant, and explain how you would respond if you found an unfamiliar berry while walking outdoors.

You must use reliable identification information and photographs or observe plants from a safe distance. Never taste a berry to identify it, and don’t handle or collect berries for this challenge.

What You’ll Need

• A reliable UK wild-plant identification guide or trusted botanical resource.
• Photographs of poisonous autumn berries and the plants they grow on.
• A notebook and pencil, or a digital note-taking tool.
• A camera or phone, if you want to photograph plants from a safe distance.

You can complete the challenge using photographs and reference material without visiting a site where poisonous plants grow.

Take the Challenge

1. Learn to recognise deadly nightshade

Deadly nightshade (Atropa belladonna) is a highly poisonous plant found in parts of the UK, particularly in suitable woodland-edge and disturbed habitats. Its shiny, dark purple-black berries sit singly in the leaf axils, rather than forming long clusters like many familiar hedgerow fruits.

The berries may look tempting, but all parts of the plant are poisonous. Ingestion can cause serious poisoning and may be life-threatening.

Study clear photographs of the whole plant as well as its fruit. Notice the way the berries are attached, the leaves surrounding them and the plant’s overall growth. Don’t rely on berry colour alone: several unrelated plants produce dark berries.

2. Identify yew berries

Yew (Taxus baccata) is a native evergreen tree often found in woodland, churchyards, parks and gardens. Its seeds are partly surrounded by a fleshy red structure called an aril, which can look like a berry.

The distinction is important because the seed and most other parts of the yew tree are highly poisonous. The red aril itself is not considered poisonous in the same way, but the seed inside is dangerous, and attempting to separate the two is not a safe activity.

For this challenge, learn to recognise the evergreen foliage and red arils from photographs. Do not collect, chew or taste any part of a yew tree.

3. Recognise holly berries

Holly (Ilex aquifolium) is a familiar evergreen shrub or small tree with glossy leaves, often edged with sharp spines. Its bright red berries are particularly noticeable in autumn and winter.

Holly berries are poisonous to humans if eaten and can cause symptoms such as nausea, vomiting and abdominal discomfort. Their colour and appearance should never be taken as a sign that they are edible.

Look at photographs showing the berries alongside the distinctive leaves. Notice that the fruit grows in clusters and that the plant remains green throughout the colder months.

4. Learn to identify woody nightshade

Woody nightshade (Solanum dulcamara), also known as bittersweet, is a climbing or scrambling plant often found in damp habitats, hedges and beside waterways. Its berries may change from green to bright red as they mature, and they hang in clusters.

The plant has purple flowers with a distinctive yellow centre, which can help with identification when flowers are present. Its berries and other parts contain toxic compounds, so they must not be eaten.

Study the plant’s leaves, stems, flowers and fruit together. Identifying a plant from several features is much safer than relying on a single photograph of its berries.

5. Compare the plants carefully

Make a simple identification table in your notebook. For each of the four plants, record:

• The plant’s common name and scientific name.
• Whether it is a tree, shrub or scrambling plant.
• The typical colour and arrangement of its berries or fruit.
• One or two other useful identification features.
• Why the fruit must not be eaten.

Use a trusted botanical source to check your notes. Where possible, compare several photographs showing different angles and stages of growth. Fruit colour can change as berries ripen, and the same colour may occur on plants from completely different families.

Don’t try to memorise every poisonous berry in the UK in one session. Learning a few common examples thoroughly is a useful starting point.

6. Practise making a safe identification decision

Imagine you are walking along an autumn hedgerow and notice a shrub covered in red berries. You don’t know what the plant is, and someone suggests that the berries look like a familiar edible fruit.

Write down the decision you would make and explain why.

A safe answer should include leaving the berries untouched, refusing to taste them, and checking the plant using a reliable identification guide. If you cannot identify it confidently, treat it as unknown and do not eat it.

If you are identifying a real plant outdoors, observe it without disturbing it. Avoid handling unknown plant material, and keep children and dogs away from potentially poisonous berries.

7. Know what to do if a berry is eaten

If someone may have swallowed an unknown berry, don’t wait for symptoms before seeking advice. In the UK, contact NHS 111 promptly for guidance, or call 999 if the person has severe symptoms, is collapsing, has difficulty breathing or is otherwise seriously unwell.

Do not induce vomiting or try home remedies. If it is safe to do so, take a photograph of the plant from a distance or note where it was growing to help identification. Don’t delay getting medical help to obtain a sample.

Knowing how to respond to a possible poisoning is part of recognising the risks of wild plants.

Check Your Results

Review your notes and see whether you can answer these questions:

1. Can you name at least three poisonous berry-producing plants found in the UK?
2. Can you describe a useful identification feature of each plant beyond berry colour?
3. Can you explain why yew fruit requires particular caution?
4. Do you understand why an unknown berry should never be tasted to establish its identity?
5. Can you describe what to do if someone swallows an unfamiliar berry?

Check any uncertain answers against a reliable botanical or health source. If you are unsure about an identification, do not guess. Correctly recognising uncertainty is an important outdoor skill.

Complete the Challenge

To complete this challenge, prepare a short identification sheet covering at least three poisonous UK plants that produce berries in autumn. Include a photograph or reference image for each, the plant’s common and scientific names, and at least two useful identification features.

Add a short note explaining how you would avoid accidental ingestion and what action you would take if someone ate an unknown berry.

Your evidence can be made entirely from reference images and written research. There is no need to pick, touch or taste berries, and you should never eat a wild plant unless its identity and edibility have been established with absolute confidence using appropriate expertise.

How to Submit Your Challenge

Submit your evidence

Take a photograph or screenshot of your completed identification sheet. Make sure the plant names and identification features are clear. Use images you are entitled to share, or take your own photographs from a safe distance.

Then:

1. Go to your SGUK member profile.
2. Open Social Activity.
3. Upload your evidence to the activity wall.
4. Add the hashtag #SGUKChallenge80.
5. Share it for verification.

Your submission should demonstrate what you’ve learnt, not require you to handle or collect poisonous plants.

Challenge 80 Checklist

Want to Push Yourself?

Extend your identification sheet to include another poisonous UK plant with berries or berry-like fruit. Research how its leaves, growth habit and fruit arrangement help distinguish it from other plants.

You could also ask an experienced botanist or knowledgeable local naturalist to review your identification sheet. Compare your observations with their feedback and note which features were most useful.

Remember that photographs and field guides support learning, but they cannot always establish a safe identification in every situation. When in doubt, leave the plant alone.

What’s Next?

Continue your journey with SGUK Outdoor Skills Challenge 79: Escape from Deep Mud. Learn how to recognise dangerous mud, respond to entrapment and make safer decisions in challenging outdoor conditions.

You can complete SGUK Outdoor Skills Challenges in any order, so feel free to explore other challenges that interest you.