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Wormwood

Artemisia absinthium

Also listed as Absinthium officinale, Absinthium vulgare

herbaceous☀️ full sun💧 low water❄ Hardy: Zone 3a – Zone 9b

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Wormwood is a bitter, aromatic perennial with finely divided silvery-green foliage and small yellow flowers. It is widely used in permaculture for its insecticidal properties, medicinal value, and ability to thrive in marginal soils.

Why grow it

Wormwood establishes readily in poor, well-drained soils where many ornamental perennials struggle, making it useful for erosion control or low-input plantings. Its allelopathic properties, documented in agronomic literature, can suppress some competing weeds, though this effect varies with growing conditions and should not be relied upon as a primary weed management tool. Compared to other Artemisia species, A. absinthium tolerates a wider range of soil pH and moisture conditions.

Watch out for

Plants may self-seed prolifically in favorable microclimates; deadheading before seed maturation helps prevent unwanted spread in nearby gardens. Foliage can scent strongly in hot weather, which some gardeners find unpleasant rather than aromatic. Wormwood's allelopathic compounds may inhibit germination or growth of nearby plants, so positioning matters in mixed plantings.

Overview

Form
Upright
Growth Rate
moderate
Size
2–4′ tall × 2–3′ wide
Dormancy
deciduous
Family
Asteraceae
EdibleMedicinalDynamic accumulatorPollinators & beneficial insectsWildlife habitat & food

Native Range

Mediterranean and temperate Asia

Seasonality

Bloom Season

J
F
M
A
M
J
J
A
S
O
N
D

Harvest Season

J
F
M
A
M
J
J
A
S
O
N
D

Edible Parts

leaf

Season of Interest

SummerFall

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Companion Planting