Photo by Melody

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

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

3 vendors have this plant for sale.

6 members have or want this plant for trade.

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

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By kat7
Thumbnail #1 of Rudbeckia hirta by kat7

By GardenGuyKin
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By Calif_Sue
Thumbnail #3 of Rudbeckia hirta by Calif_Sue

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Thumbnail #6 of Rudbeckia hirta by DaylilySLP

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There are a total of 12 photos.
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Profile:

1 positive
No neutrals
No negatives

Gardeners' Notes:

RatingAuthorContent
Positive hanna1 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.

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
Penn Wynne, Pennsylvania
North Augusta, South Carolina
Kalama, Washington



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