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PlantFiles: Sunrose, Rock Rose
Helianthemum nummularium

 
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Family: Cistaceae
Genus: Helianthemum (hee-lee-AN-thee-mum) (Info)
Species: nummularium (num-ew-LAH-ree-um) (Info)

Category:
Shrubs

Height:
12-18 in. (30-45 cm)

Spacing:
18-24 in. (45-60 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)

Sun Exposure:
Full Sun

Danger:
Unknown - Tell us

Bloom Color:
Red
Orange
Bright Yellow
White/Near White

Bloom Time:
Late Spring/Early Summer

Foliage:
Evergreen
Silver/Gray
Velvet/Fuzzy-Textured

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

Soil pH requirements:
Unknown - Tell us

Patent Information:
Unknown - Tell us

Propagation Methods:
From seed; direct sow outdoors in fall

Seed Collecting:
Unknown - Tell us

By plantdude
Thumbnail #1 of Helianthemum nummularium by plantdude

By plantdude
Thumbnail #2 of Helianthemum nummularium by plantdude

By jkom51
Thumbnail #3 of Helianthemum nummularium by jkom51

By Baa
Thumbnail #4 of Helianthemum nummularium by Baa

By saya
Thumbnail #5 of Helianthemum nummularium by saya

Profile:

1 positive
2 neutrals
No negatives

Gardeners' Notes:

RatingAuthorComment
Positive Bellisgirl On Mar 7, 2007, Bellisgirl from Spokane, WA wrote:

Ive had this plant for three years now. I have the Annabel variety, which has double blooms. Mine has formed a small six inch mound. It is evergreen. I really love it because it does well in a tough area of my garden where little else will grow.

Neutral pokerboy On Sep 29, 2004, pokerboy from Canberra
()
(Zone 8b) wrote:

This plant enjoys a well drained soil and a light sheer after flowering to do away with the deadheads. pokerboy.

Neutral Terry On Aug 31, 2001, Terry from Murfreesboro, TN
(Zone 7a) wrote:

Rock Roses (Cistaceae family) are sometimes classified as "woody perennials" and other times as "shrublets". They are not long-lived shrubs, and will likely need replacing every 3 years or when they begin to look scraggly.

Contrary to their name, they will not tolerate poor, dry, rocky soil, but will do best in average garden soil (not too rich), with regular water to encourage hard, non-succulent growth. In colder climates, cover the plants with everygreen boughs in the winter to prevent dessication.

Regional...

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

Hercules, California
Lafayette, California
Farmington, New Mexico
Barto, Pennsylvania
Pasco, Washington
Spokane, Washington



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