How to Grow Mugwort Canada

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).

Quick Facts

Factor	Value
Soil pH	4.8 - 8.2
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

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

What the research guides add

NC State treats mugwort as an invasive weed first, which is worth knowing before you plant it.

• A perennial in the daisy family, 2 to 4 feet tall, that spreads by rhizomes and rarely produces viable seeds in temperate areas; any piece of root left in the soil can make a new plant. (NC State Extension)
• It prefers full sun, well-drained soil and alkaline soils, and is considered an invasive weed in some areas. (NC State Extension)
• Control is by mowing to prevent seed formation, pulling young plants and landscape fabric. (NC State Extension)

Mugwort in Canada: climate data

Frost dates and frost-free days are the median values for the stations in Environment and Climate Change Canada climate normals with the highest data-quality rating (1981–2010 normals).

Sources for this section

• NC State Extension: Artemisia vulgaris (Plant Toolbox)

Section researched and checked on 25 October 2026 by the SoilCommander Editorial Team. How we check facts: editorial policy.

Sources

The full list of 4 sources behind this guide (NC State Extension Publications, Plants For A Future (PFAF), Royal Horticultural Society and others) is in the references of our UK guide to mugwort; they describe the plant itself, which is the same wherever it grows.