May be invasive in some regions. Click to learn more →

black knapweed

Centaurea nigra

herbaceous☀️ full sun💧 low waterZone 3a – Zone 9b

A hardy wildflower with stiff, upright stems topped by dark purple-black thistle-like flower heads. Attracts pollinators and is drought-tolerant once established.

Overview

Form: Upright
Growth Rate: moderate
Size: 1.5–3′ tall × 1–2′ wide
Dormancy: deciduous

Tolerances & Soil

moderate

Zone 3aZone 9b

1471013

ColderWarmer

Seasonality

Bloom Season

Season of Interest

SummerFall

Herb

Soft non-woody plants of the field layer.

Succession Role

pioneerearly successional

Native Range

Europe and Western Asia

Function & Care

pollinator nectarybiomass/mulch

Establishment & Care

Establishment: easy
Maintenance: low
Propagation: seed

black knapweed

Overview

Tolerances & Soil

Seasonality

Herb

Native Range

Function & Care

Companion Planting

Plants well with

black knapweed

Overview

Tolerances & Soil

Seasonality

Forest Layer Placement

Herb

Native Range

Function & Care

Companion Planting

Plants well with