Centaurea, Yellow Knapweed
Centaurea orientalis

Family: Asteraceae (ass-ter-AY-see-ee) (Info)
Genus: Centaurea (sen-TAR-ee-uh) (Info)
Species: orientalis (or-ee-en-TAY-liss) (Info)

Category:

Alpines and Rock Gardens

Perennials

Foliage Color:

Unknown - Tell us

Bloom Characteristics:

This plant is attractive to bees, butterflies and/or birds

Water Requirements:

Drought-tolerant; suitable for xeriscaping

Average Water Needs; Water regularly; do not overwater

Where to Grow:

Unknown - Tell us

Height:

18-24 in. (45-60 cm)

24-36 in. (60-90 cm)

Spacing:

15-18 in. (38-45 cm)

Hardiness:

USDA Zone 6a: to -23.3 C (-10 F)

USDA Zone 6b: to -20.5 C (-5 F)

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

USDA Zone 9a: to -6.6 C (20 F)

USDA Zone 9b: to -3.8 C (25 F)

USDA Zone 10a: to -1.1 C (30 F)

USDA Zone 10b: to 1.7 C (35 F)

Sun Exposure:

Full Sun

Sun to Partial Shade

Danger:

N/A

Bloom Color:

Bright Yellow

Bloom Time:

Mid Summer

Late Summer/Early Fall

Foliage:

Herbaceous

Leathery-Textured

Provides winter interest

This plant is resistant to deer

Other details:

This plant may be considered a protected species; check before digging or gathering seeds

Soil pH requirements:

Unknown - Tell us

Patent Information:

Unknown - Tell us

Propagation Methods:

From herbaceous stem cuttings

Seed Collecting:

Unknown - Tell us

Regional

This plant has been said to grow in the following regions:

,

Norristown, Pennsylvania

Gardeners' Notes:

1
positive
0
neutrals
0
negatives
RatingContent
Positive

On Feb 22, 2009, LeBug from Greenville, IN (Zone 6a) wrote:

This is a go in my garden for sure! It is covered with Fritillary butterflies spring/early summer when the blooms are almost gone they still pop up occasionally during summer, maybe if I cut it back it might bloom in fall, does anyone know about this? The bees love it too! Foliage stays decent all summer, doesnt need much water either.