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weed with flat round seed pods

Control: To prevent this weed, mulch garden beds in spring. Pull plants by hand or apply a postemergence herbicide once it grows.

Where It Grows: Sunny lawn, landscape, or garden areas

Weed Control: Mulch your garden to prevent velvetleaf or use a preemergence herbicide in spring. Pull existing plants by hand or use a postemergence herbicide.

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Type: Broadleaf perennial

Appearance: Identify garden weeds like smartweed by its lance-shape leaves often marked with purple chevrons. It’s an upright plant with pink or white flowers in summer and fall.

Appearance: Poison ivy can be a vine, shrub, or groundcover. The weed has leaves divided into three leaflets and can sprout clusters of green berries.

Appearance: Velvetleaf gets its name because of its large, velvety heart-shape leaves up to 10 inches across. The weed blooms with yellow flowers in summer.

Life cycle and reproduction strategies: Grows year round from persistent white tubers and rhizomes. Also spreads via berries.

Description: This tiny weed (around 10-15cm high) with a branching flower reproduces itself very quickly, often setting seed and re-growing in a matter of weeks. Often a weed of nurseries and potted plants.

Asparagus fern (Asparagus aethiopicus)

Life cycle and reproduction strategies: Spreads by seed and bulbs, often in soil. Oxalis pes-caprae appears in autumn and winter and dies back in spring. Most other weedy oxalis species grow in spring and summer and die back in autumn.

Life cycle and reproduction strategies: Grows and flowers year-round, but flowers prolifically in spring and early summer. Seeds float on wind. May be an annual in dry climates.

Description: Ground-hugging, weak-stemmed perennial creeper with narrow shiny green leaves and fleshy, semi-succulent stems. White three-petalled flowers. Carpeting growth that invades other plants. Usually found in shady spots. Causes skin irritation in dogs.