Black-eyed Susan, Gloriosa Daisy, Yellow Ox-eye Daisy
Rudbeckia hirta 'Sonora'

Family: Asteraceae (ass-ter-AY-see-ee) (Info)
Genus: Rudbeckia (rud-BEK-ee-a) (Info)
Species: hirta (HER-tuh) (Info)
Cultivar: Sonora

Category:

Annuals

Biennials

Perennials

Height:

12-18 in. (30-45 cm)

18-24 in. (45-60 cm)

24-36 in. (60-90 cm)

36-48 in. (90-120 cm)

Spacing:

24-36 in. (60-90 cm)

Hardiness:

USDA Zone 5b: to -26.1 C (-15 F)

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

Danger:

N/A

Bloom Color:

Bright Yellow

Bloom Time:

Mid Summer

Late Summer/Early Fall

Foliage:

Evergreen

Herbaceous

Other details:

May be a noxious weed or invasive

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

Drought-tolerant; suitable for xeriscaping

Average Water Needs; Water regularly; do not overwater

Self-sows freely; deadhead if you do not want volunteer seedlings next season

This plant is resistant to deer

Soil pH requirements:

5.6 to 6.0 (acidic)

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

Patent Information:

Unknown - Tell us

Propagation Methods:

From seed; direct sow outdoors in fall

From seed; winter sow in vented containers, coldframe or unheated greenhouse

From seed; sow indoors before last frost

Seed Collecting:

Collect seedhead/pod when flowers fade; allow to dry

Regional

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

Castro Valley, California

Glen Avon, California

Los Angeles, California

Cordele, Georgia

Chicago, Illinois

Rossville, Indiana

Dearborn Heights, Michigan

Wynnewood, Pennsylvania

North Augusta, South Carolina

Kalama, Washington

show all

Gardeners' Notes:

1
positive
0
neutrals
0
negatives
RatingContent
Positive

On Jul 19, 2005, hanna1 from Castro Valley, CA (Zone 9a) wrote:

Large, gorgeous flower! USDA zones 3-7, hardy to -40F, heat zone 7-1. Flowers have golden yellow petals radiating from a dark brown center. suitable as a cut flower.