Home / Guides / Plant Files / Asteraceae

Rudbeckia, Black-Eyed Susan, Gloriosa Daisy 'Irish Spring'

Rudbeckia hirta

Upload Image Print Version
Rudbeckia hirta by Gabrielle
Upload Image Print Version
Family
Asteraceae (ass-ter-AY-see-ee)
Info
Genus
Rudbeckia (rud-BEK-ee-a)
Info
Species
hirta (HER-tuh)
Info
Synonym
Sun Exposure
Full Sun
Sun to Partial Shade
Foliage
Deciduous
This plant is resistant to deer
Succulent
Height
24-36 in. (60-90 cm)
Spacing
12-15 in. (30-38 cm)
15-18 in. (38-45 cm)
Hardiness
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)
Danger
N/A
Bloom Color
Gold (yellow-orange)
Bloom Time
Late Spring/Early Summer
Mid Summer
Late Summer/Early Fall
Mid Fall
Blooms repeatedly
Other Details
Category
Annuals
Biennials
Perennials
Water Requirements
Drought-tolerant; suitable for xeriscaping
Average Water Needs; Water regularly; do not overwater
Foliage Color

Unknown - Tell us

Where to Grow
Grow outdoors year-round in hardiness zone
Can be grown as an annual
Bloom Characteristics
Flowers are good for cutting
This plant is attractive to bees, butterflies and/or birds
Flowers are fragrant
Bloom Size

Unknown - Tell us

Other details

Unknown - Tell us

Soil pH requirements
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
Patent Information

Unknown - Tell us

Propagation Methods
From seed; direct sow outdoors in fall
Direct sow as soon as the ground can be worked
From seed; direct sow after last frost
Seed Collecting

Unknown - Tell us

Regional

This plant is said to grow outdoors in the following regions:

Susanville, California

Libertyville, Illinois

Coralville, Iowa

Bossier City, Louisiana

Munsonville, New Hampshire

Hillsborough, New Jersey

Columbus, Ohio

Gettysburg, Pennsylvania

Watsontown, Pennsylvania

Olympia, Washington

show all
View this plant in a garden
5 members have or want this plant for trade

Featured Videos

Gardener's Notes:

Post Comment
1
positive
0
neutral
0
negative
Sort By:
Post Comment
Sort By:
G
G
Gabrielle
(Zone 5a) | July 2007 | positive

I was volunteering at an event that had a large display of 'Irish Spring', and every few minutes someone would ask what they were. They ...Read More

Popular Plants
SEE ALL
Iris
Peppers
Hydrangeas
Hostas
Contribute to Dave’s Garden
Add a New Plant to the List
Featured
PLANT FILES
Strelitzia Species
(Strelitzia nicolai)
BUG FILES
Pome Looper
(Chloroclystis testulata)
BIRD FILES
Downy Woodpecker
(Picoides pubescens)
Quick Links
View All Families
View All Genera
View All Species
Freeze/Frost Dates
PlantFiles FAQ
Plants with no Photos
Contribute to Dave’s Garden
Add a New Plant to the List
Featured
PLANT FILES
Strelitzia Species
(Strelitzia nicolai)
BUG FILES
Pome Looper
(Chloroclystis testulata)
BIRD FILES
Downy Woodpecker
(Picoides pubescens)