Vegetable gardens mix many families in a small space, and most vegetables look alike as young plants. The good news is that a handful of families covers nearly every common crop: nightshades (tomato, pepper, eggplant, potato), cucurbits (squash, cucumber, melon), brassicas (cabbage, broccoli, kale), legumes (beans, peas), alliums (onion, garlic, leek), the carrot family, and leafy crops like lettuce and chard. Getting the family right is most of the job.
Photographing a vegetable plant
- Choose a mature leaf from the middle of the plant, not the newest growth at the top.
- Shoot it from directly above against soil or a sheet of paper, with the whole leaf, including all its leaflets, in the frame.
- If the plant is flowering, take a second photo of one open flower. Flowers separate close relatives far better than leaves.
- Avoid photos of a whole bed: the model needs one plant, close up.
The general method for leaves, flowers and fruit is on the plant identifier page.
Field marks by vegetable family
Tomato, potato, pepper and eggplant
Tomato leaves are compound, with toothed leaflets of uneven sizes, and the stems are covered in fine hairs that leave a strong, distinctive smell on your fingers. Potato leaves are also compound but usually smoother. Pepper leaves are simple, smooth, glossy and pointed, with no strong smell. Eggplant has large, simple, softly fuzzy leaves with wavy or shallowly lobed edges, often with purple tints on the stems and veins. All four have star-shaped flowers.
Squash, zucchini, cucumber and melon
Cucurbits have large, rough, often bristly leaves and yellow flowers, and most climb or sprawl with coiled tendrils. Squash and zucchini leaves are very large and broad, sometimes with silvery patches. Cucumber leaves are smaller, more triangular, with pointed lobes. Watermelon leaves are deeply cut into rounded lobes, quite unlike the others. Squash types cross-identify easily; the fruit is the reliable way to separate them.
Cabbage, broccoli, kale and other brassicas
Brassica leaves are often blue-green with a waxy coating that makes water bead up. Young cabbage, broccoli, cauliflower, kale and Brussels sprouts are hard to tell apart, because they are all forms of one species. A photo identifier will usually name the species, Brassica oleracea, rather than the crop. Wait for heads, sprouts or flowers.
Beans and peas
Bean leaves have three leaflets, like a large clover. Pea leaves are compound with several pairs of leaflets, end in branched tendrils, and have large leafy flaps (stipules) where they join the stem. Both have pea-shaped flowers and produce pods.
Onion, garlic and leek
Onion leaves are hollow tubes. Garlic leaves are flat, solid and keeled. Leek leaves are flat and wide, folded around each other in a fan. All three smell of onion when crushed, which separates them from grasses and look-alike weeds.
Carrot, parsley and dill
The carrot family has finely divided, feathery or fern-like leaves and flat-topped umbrella clusters of tiny flowers. Carrot tops smell of carrot; parsley and dill have their own familiar smells. Be careful in this family: poison hemlock and other toxic wild plants look similar, so never eat a foraged plant from here on a photo identification.
Lettuce, chard and beet
Lettuce grows as a rosette and bleeds a little milky sap from a torn leaf. Chard and beet share a species; both have glossy leaves, and red or yellow stems and veins are common.
When the identifier gets vegetables wrong
- Many vegetables are varieties of a single species (all the Brassica oleracea crops, all the squashes in Cucurbita pepo), so expect a species name, not a crop or variety name.
- Stressed plants, with yellowing, holes or wilting, look less like the reference photos. Pick the healthiest leaf.
- Volunteers from the compost or last year's fallen fruit are often squash, tomato or melon, and often a cross between varieties.
- Seedlings with only seed leaves are close to impossible to name from a photo. See the weed or seedling guide.
Edible plants in our species guides
CanopyTwin's species database focuses on tropical fruit, but it includes a few garden favourites that are not trees, such as papaya, pineapple and passion fruit. If you grow fruit trees too, the fruit tree identifier covers them.
Edible plant species guides
Frequently asked questions
- Can I identify a vegetable plant from its leaves alone?
- Usually to the family, often to the crop. Tomato, squash, bean and onion leaves are distinctive. Close relatives, such as cabbage, broccoli and kale, or different squash types, can look the same until they flower or fruit.
- Why does the identifier say tomato when I planted potatoes?
- Tomato and potato are close relatives with similar compound leaves, and young plants are easy to confuse. Potato leaves are usually smoother and less deeply toothed. Check what is underground or wait for flowers before pulling anything.
- How do I tell zucchini from cucumber plants?
- Zucchini and other squash have very large, broad, often lobed leaves on a bushy plant, sometimes with silver mottling. Cucumber leaves are smaller, more triangular with pointed lobes, and the plant climbs with tendrils.
- Can it identify vegetable seedlings?
- Only once true leaves appear. The first one or two seed leaves look similar across many plants. Wait until the plant has two to four true leaves, then photograph one from above. Our weed or seedling guide covers this in detail.
- Is it safe to eat a wild plant this identifies as a vegetable?
- No. Several edible plants have toxic look-alikes; wild carrot and parsley resemble poison hemlock, for example. Never eat a foraged plant on the strength of a photo identification.
Growing more than one tree?
CanopyTwin puts every tree on a map with its species, photos and history, counts fruit from survey photos, and flags health problems. It is built for orchards, nurseries and collectors.