10 Plants That Look Like Weed

Cannabis often has palm shaped, serrated leaflets that start from one point, but leaf form varies, so use several traits and a botanical key. If a plant lacks these traits, it is probably not cannabis. Wear gloves when you handle an unknown plant and never taste it.

Many common garden plants, crops and shrubs get mistaken for weed, especially when they are young. This guide shows you how to identify cannabis, gives you a simple step by step check, and lists 10 plants that look like weed, with one clear cue for telling each apart.

How to identify cannabis

Start with the leaf. The University of Missouri’s WeedID guide describes cannabis leaves this way: “All leaves are divided into 5 to 9 leaflets that each arise from a common point (palmately divided). Individual leaflets have serrated margins and are hairy.” In other words, a mature cannabis leaf is made of separate, narrow leaflets with saw toothed edges, all fanning out from the same spot like fingers from a palm.

That detail matters. Many similar plants have a single leaf that is cut into lobes but still joined in the middle, like a maple leaf. Cannabis leaflets are fully separate.

The same Missouri guide notes that “hairs along the stem exude a sap that contributes to the distinctive smell of this plant,” and that “male and female flowers are produced on separate plants.” Smell can be a clue, but it is not a reliable test on its own, because some similar plants have strong odors of their own.

UF/IFAS Extension publishes a full identification guide, Cannabis sativa Plant Identification and Its Look Alikes (AG476), written to help growers and land managers tell cannabis apart from similar looking plants. It compares cannabis with kenaf, roselle hibiscus, lilac chastetree and Virginia creeper, and if you’re still unsure, it’s the best place to go. The Florida Department of Agriculture also publishes a guide covering okra, Japanese maple, cleome, kenaf, coral plant and cassava.

How to tell cannabis from a similar plant, step by step

1. Look at a full leaf. Cannabis leaflets are separate and all start from one point.
2. Count the leaflets. Mature cannabis leaves often have 5 to 9.
3. Check the edges. Cannabis leaflets are saw toothed (serrated).
4. Look at several leaves, not just one. Smell and touch are not reliable tests, so rely on leaf and flower traits.
5. Check the stem and flowers. Cannabis usually has separate male and female plants.
6. If you are still unsure, compare with the UF/IFAS AG476 guide or a botanical key.
7. Wear gloves when handling an unknown plant and never taste it.

Flowers are often the clearest giveaway. Most of these plants produce big, colorful flowers with petals, while cannabis flowers are small and green, without showy petals.

The 10 plants that look like weed

Leafwell notes that most mixups happen during early growth, before flowers appear. Here are 10 plants to know, each with a cue to tell it apart.

1. Kenaf (Hibiscus cannabinus). Kenaf is a fiber crop so similar to cannabis that its scientific name points to it. UF/IFAS AG476 compares the two directly. The cue: kenaf leaves are lobed, not split into separate leaflets, and lower leaves are often heart shaped. Mature plants grow large yellow or red hibiscus flowers.

2. Roselle hibiscus (Hibiscus sabdariffa). Roselle is another hibiscus covered in UF/IFAS AG476. Its upper leaves can be deeply lobed and look like cannabis from a distance. The cue: the leaf lobes join at the base, and the plant grows fleshy red calyxes and showy flowers.

3. Lilac chastetree (Vitex agnus castus). This shrub is also compared in UF/IFAS AG476. Young leaves have about five leaflets in a palm shape. The cue: the leaflet edges are smooth, not serrated, and the plant grows spikes of purple flowers.

4. Virginia creeper (Parthenocissus quinquefolia). UF/IFAS AG476 includes this common vine. It has five leaflets fanning from one point, which fools many people. The cue: it is a climbing vine with tendrils, not an upright plant, and its leaves turn red in fall.

5. Okra (Abelmoschus esculentus). Okra is listed by the Florida Department of Agriculture and by Leafwell. From a distance, a field of okra can look like cannabis. The cue: okra leaves are lobed but joined, and the plant grows large pale flowers followed by long green pods.

6. Japanese maple (Acer palmatum). This ornamental tree is listed by the Florida Department of Agriculture and by Leafwell. Young saplings have serrated, palm shaped leaves. The cue: the leaf is one piece with lobes, the leaves are hairless, and the stem turns woody after the first season.

7. Cleome, or spider flower (Cleome hassleriana). Cleome is listed by the Florida Department of Agriculture and by Leafwell. Before it blooms, its leaflets look much like cannabis. The cue: the leaf teeth are much less obvious, the stems can have small prickles, and it grows masses of pink or white flowers.

8. Coral plant (Jatropha multifida). The Florida Department of Agriculture and Leafwell both list this shrub. Its leaves look like a cannabis fan at first glance. The cue: the leaf is deeply lobed but still joined, it grows clusters of bright red or pink flowers, and it oozes sap when cut.

9. Cassava (Manihot esculenta). Cassava is a root crop listed by the Florida Department of Agriculture and by Leafwell. Its large palm shaped leaves cause confusion. The cue: cassava leaf lobes have smooth edges, not serrated ones, and the plant oozes a white sap when damaged.

10. Hops (Humulus lupulus). UF/IFAS Extension and the University of Michigan both place hops in the same plant family as cannabis, Cannabaceae. The leaves are usually three to five lobed and can look similar. The cue: hops grow as a climbing vine and produce papery cone shaped flowers used in brewing.

Quick comparison table

Why home growers care

This comes in handy in a few everyday ways. A mystery seedling in your garden is far more likely to be a weed, a vegetable or an ornamental than cannabis. A neighbor’s okra or Japanese maple is not a reason to worry. When you buy seedlings or clones, knowing real cannabis leaves helps you avoid being sold the wrong plant.

Legality matters too. Growing a plant that looks like weed is not illegal, but growing cannabis itself depends on your state and local rules. If you want to grow cannabis where it is legal, start from known seeds rather than guessing at a plant. To learn how cannabis plants reproduce and how to tell males from females, see our guide at https://kindseed.com/cannabis-reproduction-and-identifying-gender/.

Troubleshooting

Young seedlings are the hardest to call. Give the plant a few more weeks so it grows several sets of true leaves, then run the step by step check again.