Photo by Melody

PlantFiles: Three-lobed Rudbeckia, Brown-eyed Susan
Rudbeckia triloba 'Prairie Glow'

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Family: Asteraceae (ass-ter-AY-see-ee) (Info)
Genus: Rudbeckia (rud-BEK-ee-a) (Info)
Species: triloba (try-LO-buh) (Info)
Cultivar: Prairie Glow

3 vendors have this plant for sale.

8 members have or want this plant for trade.

Category:
Biennials
Perennials

Height:
36-48 in. (90-120 cm)
4-6 ft. (1.2-1.8 m)

Spacing:
24-36 in. (60-90 cm)

Hardiness:
USDA Zone 3a: to -39.9 C (-40 F)
USDA Zone 3b: to -37.2 C (-35 F)
USDA Zone 4a: to -34.4 C (-30 F)
USDA Zone 4b: to -31.6 C (-25 F)
USDA Zone 5a: to -28.8 C (-20 F)
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:
Sun to Partial Shade

Danger:
Unknown - Tell us

Bloom Color:
Red-Orange
Gold (Yellow-Orange)
Bright Yellow

Bloom Time:
Late Summer/Early Fall
Mid Fall

Foliage:
Herbaceous

Other details:
This plant is attractive to bees, butterflies and/or birds
Average Water Needs; Water regularly; do not overwater
Self-sows freely; deadhead if you do not want volunteer seedlings next season

Soil pH requirements:
Unknown - Tell us

Patent Information:
Non-patented

Propagation Methods:
By dividing the rootball
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
From seed; direct sow after last frost

Seed Collecting:
Allow seedheads to dry on plants; remove and collect seeds
Properly cleaned, seed can be successfully stored

Click thumbnail
to view:

By jackthompson
Thumbnail #1 of Rudbeckia triloba by jackthompson

By wetdogfarm
Thumbnail #2 of Rudbeckia triloba by wetdogfarm

Profile:

1 positive
No neutrals
No negatives

Gardeners' Notes:

RatingAuthorContent
Positive wetdogfarm On Aug 29, 2013, wetdogfarm from Eveleth, MN (Zone 3a) wrote:

This plant has always behaved as a biennial for me in zone 3a. Give it lots of room if you want a large plant with many flowers. It doesn't start flowering for me until August. One downside, it attracts tarnished plant bug which feed on the buds and cause distorted flowers.

Regional...

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

Denver, Colorado
Eveleth, Minnesota
Harris Hill, New York
Gresham, Oregon



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