plant

Sweet William

Dianthus barbatus

Updated 9 Jun 2026 · AI-parsed entry

Sweet William (Dianthus barbatus) — a plant, for Full sun, Medium water.

What it needs & gives back

↓ Needs

Sunlightfull sun to partial shade
Watermedium

↑ Gives back

Nectarattracts pollinators
Pollenattracts pollinators

Through the year

Emergence

Emergence of new growth in spring after the last frost and when soil temperatures rise above 5°C.

Flowering

Flowering typically occurs about 60 days after emergence and can last for up to 3 months.

Senescence

Foliage begins to die back with the first autumn frosts.

Timing is relative to your local season (temperate Northern Hemisphere).

Soil interactions

Drainagewell-drained
Nitrogen fixingNo
MycorrhizalNo
Soil textureloam, sandy_loam
Organic matterLow
Compaction toleranceMedium

Propagation

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

Wildlife & pests

Attractsbees, butterflies
Can host pestsaphids, spider_mites
Can host diseasesrust, crown_rot