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You don’t need to be an expert to identify the weeds in your garden. Our handy guide will help you to spot weeds and check how they grow and spread. Equipment needed: Wildflower books; Plant identification apps – try our identify a plant tool; MyAdvice can be used by RHS members for plant identification enquiries
- Stinging Nettle. Botanical Name: Urtica dioica. Height: 1 – 2 metres. Notes: The Stinging Nettle is known by most for the skin irritation it causes upon direct contact.
- Dandelion. Botanical Name: Taraxacum officinale. Height: 10 – 15 cm. Notes: A well-known garden weed with vibrant yellow flowers. You’ll typically find Dandelions in cultivated land and grassy areas.
- Poison Ivy. Botanical Name: Toxicodendron radicans. Height: Up to 2 metres. Notes: Poison Ivy causes skin irritation through direct contact. You can find this plant growing in the forest understory.
- Ground Ivy. Botanical Name: Glechoma hederaceae. Height: 5 – 50 cm. Notes: Ground Ivy grows in woodlands and garden lawns. It has highly distinctive kidney-shaped leaves and violet flowers.
- Poison Sumac (Toxicodendron vernix) Poison sumac is a shrub (some consider it a small tree) that grows in wet areas, often next to cinnamon ferns and cattails.
- Japanese Knotweed (Polygonum cuspidatum) Polygonum cuspidatum goes by several common names, including Japanese knotweed and fleece flower. Several other common names include "bamboo" in them, such as "Mexican bamboo" or "American bamboo."
- Crabgrass (Digitaria) Crabgrass is so called because this grassy weed creeps along close to the ground, like a crab. In addition to mixing with lawn grass, it's often found growing in cracks in your hardscape.
- Dandelions (Leontodon taraxacum) Dandelions are a harbinger of spring. Their bright yellow flowers often poke up through lawns and appear between cracks in driveways and sidewalks.
- Crabgrass (Digitaria spp.) Crabgrass is a low-growing summer annual that spreads by seed and from the rootings of nodes on the soil. Undisturbed, it can grow to 2 feet tall.
- Purslane (Portulaca oleracea) Purslane is considered noxious in at least one U.S. state. Why is this edible annual succulent plant considered troublesome?
- Lambsquarters (Chenopodium album) Another edible weed! Lambsquarters is a fast-growing summer annual that is very nutritious and delicious, steamed, in salads, or juiced.
- Pigweed (Amaranthus spp.) Pigweed wins the title of the most “problematic” annual weed. It has evolved traits that make it a tough competitor, especially in broadleaf crops like soybeans and cotton.
Weed Identification and Control Library. We've chosen the most common weeds found in lawns and gardens, and provided the essential information you need for identifying and managing them. Click on a link or image below to view the complete guide.
Weeds will not only hurt the look of your lawn, they will also rob your turfgrass of sunlight, water and other nutrients. Identifying weeds can be difficult since there are so many different types that might invade your lawn. There are two types of weeds that you might see: Broadleaf weeds. Grassy weeds.
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Jun 6, 2022 · First up in our weed identification guide is broadleaf plantain. This broadleaf perennial weed can be identified by its oval leaves growing erect in rosette, or flower-like arrangement. In addition, flower spikes will grow outward from the rosette.
