How to Grow Mugwort UK | Regional Planting Calendar

Regional Planting Calendar

Quick Facts

Factor	Value
Soil pH	4.8 - 8.2
Sunlight	3-6 hours direct sun
Soil texture	Loam, sand or chalk (RHS); circumneutral to slightly alkaline loam preferred, but tolerant of a wide pH range (PFAF)
Drainage	Well-drained, or moist but well-drained (RHS); drought-tolerant once established (PFAF)
Lifecycle	Upright, rhizomatous herbaceous perennial (RHS)
Edible parts	leaves

At a Glance

Soil & Growing Conditions

Water: Prefers moist soil, but is longer-lived and more strongly aromatic in poor, dry soil (PFAF)

Soil pH range

4.8 8.2

Span reflects genuine variation between the cited authorities, not a single agreed figure.

Growth Stages

Stage	BBCH	Notes
Establishment	0	Propagate by seed with a period of cold stratification, or by dividing the rhizome in spring or autumn (RHS). Plant with containment in mind -- it spreads aggressively by rhizome and can regrow from small fragments (NC State Extension).
Vegetative growth	3	Grows fast in full sun or partial shade in almost any well-drained soil; plants are hardier and more aromatic in poor, dry soil than in rich, moist ground (PFAF).
Flowering	6	Creamy-yellow flowers appear in dense, leafy panicles in late summer (RHS). Remove flower heads before they set seed, since this is a prolific self-seeder (RHS).
Harvest and cutting back	8	Pick aromatic leaves through the season for tea, tinctures or as a potherb. Prune the whole plant back to 5-10cm above ground level in autumn (RHS).

Harvest & Storage

When to pick: Aromatic, bitter leaves can be picked through the growing season for tea, tinctures and cordials (RHS), or boiled as a potherb (PFAF). Remove flower heads before they set seed to prevent the plant spreading (RHS).

Diseases

Mugwort Photo Gallery

Mugwort stem

A mugwort stem showing its deeply lobed, aromatic leaves.

Young mugwort shoot

A young mugwort shoot at the start of the growing season, in a field margin.

Mugwort leaf detail

Close detail of mugwort's deeply lobed leaves.

A young mugwort plant

A young, bushy mugwort plant before it sends up its tall flowering stems.

A clump of mugwort

A dense clump of mugwort, illustrating its vigorous, spreading growth habit.

A stand of mature mugwort

A large stand of mature mugwort plants, showing how readily the crop spreads once established.

Mugwort growing at a field edge

Mugwort growing among tall grasses at the edge of a field, its typical wild habitat.

Mugwort stems in a mature stand

Tall mugwort stems in a mature stand, showing the plant's typical upright habit.

References

1. NC State Extension Publications - Mugwort or Chrysanthemum Weed (Artemisia vulgaris)

   A common weed of landscape plantings and turf, particularly troublesome in the Southeastern US. Spreads primarily by long, stout rhizomes and can regenerate from small rhizome fragments; often introduced in root balls of field-grown nursery stock, then spreads rapidly to adjacent areas via rhizomes and cultivation. Also produces copious seed that falls near the parent plant and can be dispersed by surface water. Tolerant of mowing; not controlled by common pre-emergence herbicides; hand removal is difficult because rhizome fragments resprout. Effective control: late-summer/early-fall glyphosate, winter dichlobenil, or clopyralid on seedlings/young shoots.

2. Plants For A Future (PFAF) - Artemisia vulgaris

   Easily grown in well-drained, circumneutral to slightly alkaline loamy soil, pH tolerance 4.8-8.2; prefers a sunny position and moist soil, but plants are longer-lived, hardier and more aromatic in poor, dry soil; established plants are drought-tolerant. Grows to about 1.2m x 0.7m at a fast rate. Leaves are boiled and eaten as a potherb, used to flavour and colour rice cakes, and dried leaves/tops are used to flavour beer or steeped as tea. Aggressive and invasive, inhibiting nearby plant growth via root secretions (allelopathy). Leaf aroma helps repel insects.

3. Royal Horticultural Society - Artemisia vulgaris (mugwort)

   Upright, rhizomatous herbaceous perennial to 1.5-2.5m tall, spread 0.5-1m, with aromatic, deeply lobed deep-green leaves and creamy-yellow flowers in dense leafy panicles in late summer. Grow in loam, sand or chalk (acid/alkaline/neutral), well-drained or moist but well-drained, full sun or partial shade. Hardiness H6 (-20 to -15C). Time to maturity 2-5 years. Propagate by seed with cold stratification, or by rhizome division in spring or autumn. Fast-growing and a prolific self-seeder -- remove flower heads to prevent spreading; prune back to 5-10cm above ground in autumn. Generally pest-free; may be susceptible to honey fungus. Edible, bitter leaves used in tea, tinctures and cordials. Native to Great Britain and Ireland. Family Asteraceae.

4. State of Indiana Cooperative Invasives Management (SICIM) - May 2022 Invasive Plant of the Month: Mugwort

   Mugwort is one of 44 species listed in the Indiana Terrestrial Plant Rule, which prohibits its commercial sale and distribution in the state of Indiana.

4 independent sources are cited for this crop. Where they disagree - soil pH is the clearest case - every figure is preserved rather than averaged into false precision.