Helianthemum, Common Rock Rose, Sun Rose 'Ben Nevis'

Helianthemumnummularium

Genus
Helianthemum (hee-lee-AN-thee-mum)
Species
nummularium (num-ew-LAH-ree-um)
Synonym
Sun Exposure
Full Sun
Foliage
Evergreen
Succulent
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)
Bloom Color
Orange
Bloom Time
Late Spring/Early Summer
Other Details
Category
Shrubs
Water Requirements
Drought-tolerant; suitable for xeriscaping
Average Water Needs; Water regularly; do not overwater
Foliage Color
Bronze
Where to Grow
Bloom Characteristics
Bloom Size
Other details
Soil pH requirements
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
Propagation Methods
From seed; direct sow outdoors in fall
Seed Collecting
Regional

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

Fairfax, California

Grand Junction, Colorado

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Gardener's Notes:

2
positives
0
neutral
0
negative
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F
Fairfax, CA | January 2012 | positive

Wonderful, undemanding plant--will also grow well in part shade and can be propagated from cuttings.

I
Denver, CO | October 2009 | positive

My first and favourite Helianthemum out of perhaps 25 varieties I've grown. A sturdy plant with a low, wide, profile. Does not root as ...Read More

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