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PlantFiles: Diascia, Twinspur
Diascia 'Hannah Rose'

Family: Scrophulariaceae (skrof-yoo-larr-ee-AY-see-ee) (Info)
Genus: Diascia (dy-ASS-ee-uh) (Info)
Cultivar: Hannah Rose
Additional cultivar information: (Hector Harrison series)

2 members have or want this plant for trade.


12-18 in. (30-45 cm)

18-24 in. (45-60 cm)

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)
USDA Zone 11: above 4.5 C (40 F)

Sun Exposure:
Full Sun

Unknown - Tell us

Bloom Color:

Bloom Time:
Late Winter/Early Spring
Late Spring/Early Summer


Other details:
Average Water Needs; Water regularly; do not overwater

Soil pH requirements:
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
7.9 to 8.5 (alkaline)

Patent Information:
Unknown - Tell us

Propagation Methods:
From herbaceous stem cuttings

Seed Collecting:
Unknown - Tell us

Click thumbnail
to view:

By htop
Thumbnail #1 of Diascia  by htop

By htop
Thumbnail #2 of Diascia  by htop

By GreeneLady
Thumbnail #3 of Diascia  by GreeneLady

By GreeneLady
Thumbnail #4 of Diascia  by GreeneLady


1 positive
No neutrals
No negatives

Gardeners' Notes:

Positive GreeneLady On Feb 1, 2009, GreeneLady from Oak Island, NC (Zone 8a) wrote:

Diascia has been hardy in my zone 8a.
I planted this particular Diascia last year in the spring of 07 and it has not died back! It was 6 inches wide and about 5 inches tall when planted. It is now 34" wide and 16" tall. After blooming profusely for 2 months, it will have few flowers on it at all times until it goes to sleep in the winter. Super easy to care for, I fertilize twice a year and thats it. It's located in a raised bed and gets morning shade and full afternoon sun.


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

Fort Lauderdale, Florida
Harlem, Georgia
Portland, Oregon
San Antonio, Texas
Willis, Texas

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