plant

Cosmos

Cosmos bipinnatus

Updated 4 Aug 2026 · AI-parsed entry

Cosmos (Cosmos bipinnatus) — a plant, for Full sun, Medium water.

What it needs & gives back

↓ Needs

Lightfull sun
Watermoderate

↑ Gives back

Mulch_biomassmedium
Nectarhigh
Pollenhigh

Through the year

Through the year

JFMAMJJASOND
emergenceSeeds germinate after the last spring frost when soil temperatures are consistently warm.
floweringFlowering typically begins in mid-summer as days begin to shorten, continuing until frost.
senescencePlants die back with the first hard autumn frost.

Soil interactions

Drainagewell-drained
Nitrogen fixingNo
MycorrhizalNo
Soil textureloam, sandy_loam
Organic matterMedium
Compaction toleranceLow

Propagation

Methodsseed
Difficulty1 / 5
Establishes in~0 yr
Self-seedingModerate

Wildlife & pests

Attractsbees, butterflies, hoverflies, lacewings
Can host pestsaphids, slugs
Can host diseasespowdery mildew