Sweet Annie (Artemisia) in Zone 4a & 4b

Artemisia annua

When to plant sweet annie (artemisia) in zone 4b

Zones 4a and 4b share the same average frost dates in our data, so this page covers both.

Method: Either: Start indoors for an earlier harvest, or direct-sow outside for less fuss. Sweet Annie (Artemisia) tolerates either.

Start indoors	Apr 3–Apr 10
Direct sow / transplant outside	May 15–May 22
Estimated bloom	Aug 23–Aug 30 (~100 days after planting)

Spacing: 1 per square foot (square-foot-gardening spacing). Mature height: 4-6 ft.

Sweet Annie is not the culinary tarragon already covered on this site, though the two share a genus. This one is grown for its sweetly aromatic, feathery foliage, a favorite for wreaths and as a fragrant filler in dried arrangements.

How sweet annie (artemisia) fits zone 4's season

Zone 4b's frost-free window runs about 128 days, from May 15 to September 20. Sweet Annie (Artemisia) needs about 100 days from sowing to first harvest.

Good companions

No standout companions recorded yet for Sweet Annie (Artemisia).

Where to buy sweet annie seeds

See why we recommend these suppliers →

As an Amazon Associate we earn from qualifying purchases. Some links on this page also go to other retailers we may earn a commission from as an affiliate, at no extra cost to you. We only recommend products with a genuine consensus of positive, independent reviews. See the sources cited on each item.

See it growing

Search YouTube for "growing sweet annie (artemisia)" videos → (a live search, not a hand-picked video; results vary and aren't vetted by us)

← Back to the full zone 4b calendar · Full companion planting guide · Full plant profile · Plan your beds in the Garden Designer →

Pin this for later

Growing Sweet Annie (Artemisia) in USDA zone 4b: when to start seeds indoors, when to direct-sow, and when to expect a bloom.

Save to Pinterest