Most garden plants are perfectly safe around children. The list of genuinely dangerous ones is shorter than most parents expect. But some common garden favourites — plants that appear in garden centres, on fence lines, and in inherited gardens across the country — carry enough risk that families with young children should either remove them, relocate them to inaccessible areas, or at minimum know which parts are problematic and why.
This guide covers the most important plants to be aware of, the safe alternatives that can replace them, and the general principles that help when encountering an unfamiliar plant.
Understanding the Risk
Toxicity in plants exists on a spectrum. A plant that causes mild stomach upset if a large quantity of berries is eaten is categorically different from one where a single leaf chewed by a toddler requires immediate hospital attention. The plants flagged in this guide sit toward the more serious end of that spectrum — those where accidental ingestion or skin contact with a young child warrants attention.
Age is the critical variable. Children under five explore the world through touch and taste. A berry that a seven-year-old would not eat on a dare is exactly the thing a two-year-old might pop into their mouth. The risk assessment for the same plant changes substantially depending on the age of the youngest person in the household.
Supervision is always the primary control. No plant list substitutes for an adult who knows where their child is. But informed plant selection reduces the number of moments that require intervention.
Plants to Relocate or Remove
Foxglove (Digitalis purpurea)
Foxglove is one of the most widely grown cottage garden plants and one of the most toxic. All parts of the plant contain cardiac glycosides — compounds that affect heart rhythm. Ingestion can cause nausea, vomiting, heart palpitations, and in serious cases, cardiac arrest. The tubular flowers are visually interesting to children, and the large, soft leaves are accessible at ground level in the plant's first-year rosette stage. Foxglove is not suitable for gardens regularly used by children under eight.
Monkshood (Aconitum napellus)
Monkshood contains aconitine, one of the most toxic compounds found in any garden plant in temperate climates. All parts are toxic, and toxins can be absorbed through skin contact with broken plant material. Even a small quantity ingested is potentially fatal. Despite this, it is sold in garden centres and appears in many inherited borders. It should be removed entirely from any garden used by children.
Lily of the Valley (Convallaria majalis)
The delicate white bell flowers of lily of the valley are deceptively attractive to children. The entire plant is toxic — including the red berries that appear in late summer, which look like small, bright, edible fruits to a young child. Cardiac glycosides are present throughout. Relocate or replace in family gardens.
Laburnum (Laburnum anagyroides)
Laburnum produces spectacular yellow flower chains in late spring and is a common ornamental tree in older gardens. The seeds are toxic, and the seed pods resemble peas closely enough that children have been known to try eating them. All parts contain cytisine, which causes vomiting, seizures, and can be fatal in significant quantities. Not appropriate as a feature tree in a young family's garden.
Euphorbia (many species)
Euphorbias include a wide range of popular garden perennials and shrubs. Their milky white sap is a severe irritant that causes skin burns, eye damage if it contacts the eye, and gastrointestinal symptoms if ingested. The sap is released when any part of the plant is broken. Children who handle euphorbia and then rub their eyes are at particular risk. Wear gloves when handling and consider relocating from areas where children play or work.
Yew (Taxus baccata)
Yew is one of the most toxic trees in cultivation. The bright red berries (arils) are the one part that is not toxic — but the dark seed inside each aril is highly toxic. A child who bites through the aril and crushes the seed is at risk. The foliage, bark, and seeds all contain taxine alkaloids. Yew hedges are common boundary plantings in older gardens. They are worth replacing at a family garden boundary with hawthorn, holly, or beech where young children are present.
Safe Alternatives That Perform the Same Design Role
Every plant flagged above has an alternative that provides similar visual effect without the risk.
- Instead of foxglove: Delphiniums (low toxicity, similar vertical flower spikes) or hollyhocks (safe, tall cottage garden feel)
- Instead of monkshood: Salvia nemorosa or agastache — similar blue-purple spikes, safe for children and pollinators
- Instead of lily of the valley: Sweet woodruff (Galium odoratum) as a ground cover — fragrant, spreading, non-toxic
- Instead of laburnum: Robinia pseudoacacia or crab apple for similar ornamental tree effect
- Instead of euphorbia: Alchemilla mollis for low-growing, frothy border edges — safe and extremely tough
- Instead of yew hedge: Hornbeam (Carpinus betulus) — holds its leaves in winter, forms dense hedges, entirely safe
Safe Plants to Grow More Of
The following plants are safe around children, engaging to grow, and useful in a family garden context.
Herbs
Mint, basil, chives, thyme, rosemary, and lemon balm are all non-toxic and provide sensory engagement through smell and taste. Children can handle them freely. Growing herbs in a dedicated herb garden or alongside vegetables introduces children to the link between garden and kitchen. The indoor herb garden guide covers growing basics applicable to outdoor herb beds too.
Sunflowers
Sunflowers are entirely safe, fast-growing, and provide a visible measure of success. Their seeds are edible and can be harvested at the end of the season. Growing a row of sunflowers gives children a fast-turnaround project with a dramatic result.
Nasturtiums
Nasturtiums are edible — both flowers and leaves have a peppery flavour — and extremely easy to grow from direct-sown seed. They thrive in poor soil and require minimal attention. The round, flat seeds are easy for small hands to handle, and the flowers come in a wide range of warm colours that appeal to children.
Strawberries
Strawberries are safe, productive, and irresistible to children. A few plants in a raised bed or container provide weeks of harvesting interest in early summer. They spread via runners, which can be a teaching exercise in plant propagation as children get older.
Marigolds (Tagetes)
French and African marigolds are non-toxic, long-flowering, and serve a practical purpose as companion plants that deter aphids and whitefly from vegetables. Their strong scent makes them sensory as well as decorative. Easy to grow from seed with reliable germination.
What to Do If a Child Eats a Plant
If a child is suspected of eating any part of an unknown plant, contact the national poisons information service immediately. In the UK, this is 111. In the US, the Poison Control Center is 1-800-222-1222. Try to identify the plant or take a photograph if possible — the shape of the leaf, the colour of any berries, and any distinctive smell help with rapid identification. Do not induce vomiting unless specifically instructed to do so.
Frequently Asked Questions
Are all plants with berries dangerous?
No. Many garden plants with berries are safe — elder, rowan, and the ornamental crab apple are all fine. The ones requiring attention are those with bright, visually appealing berries combined with genuine toxicity: holly, yew, lily of the valley, and ivy. When in doubt, the rule for young children is: no berries unless confirmed safe.
Is lavender safe for children?
Yes. Lavender is non-toxic and actively beneficial in a family garden — the scent is calming, the flowers attract pollinators, and the plant is robust enough to withstand the kind of incidental handling children give it. It is an excellent choice near paths where children brush past plants regularly.
Are thorny plants like roses appropriate in family gardens?
Thorny plants present a physical hazard but not a toxic one. They are generally appropriate in areas where children do not play or run, such as boundary hedges or at the back of a border. Avoid placing climbing roses over arches, pergolas, or near play equipment where children might grab stems for support. Thornless rose varieties are available if roses are wanted in a play-adjacent location.
How do I teach children to avoid touching unknown plants?
The simplest rule to teach is: don't eat anything from the garden unless a grown-up has said it is okay. For plant handling, "look but don't touch until you know what it is" works for older children. Younger children rely on supervision rather than rules. Teaching garden awareness is a gradual process built over years, not a single conversation.