plant

Yarrow

Achillea millefolium

Updated 4 Aug 2026 · AI-parsed entry

Yarrow (Achillea millefolium) — a plant, for Full sun, Low water. Companions: Tomato, Cabbage.

What it needs & gives back

↓ Needs

Lightfull sun to partial shade
Waterlow to medium

↑ Gives back

Mulch_biomassmedium
Nectarattracts pollinators
Pollenattracts pollinators

Companions

Through the year

Through the year

JFMAMJJASOND
emergenceEmergence of new growth in spring after the last frost and when soil temperatures rise above 5°C.
floweringFlowering typically occurs in summer with lengthening days and warm air temperatures.
senescenceSenescence begins with the first autumn frosts, leading to dormancy.
dormancyEnters dormancy after the first hard frosts and sustained cold temperatures.

Soil interactions

Drainagewell-drained
Nitrogen fixingNo
MycorrhizalYes
Accumulatescopper, potassium, calcium, magnesium, phosphorus
Soil texturesandy, loamy, clay
Organic matterMedium
Compaction toleranceHigh

Propagation

Methodsseed, division
Difficulty2 / 5
Establishes in~1 yr
Stratificationcold_moist
Self-seedingModerate
Divisionspring

Wildlife & pests

Attractspollinators, beneficial insects
Repelsaphids, ants, cabbage worms