Xanthisma Species, Colorado Tansyaster, Wild Aster
Xanthismacoloradoensis

Synonym:Aster coloradoensis

Synonym:Eriocarpum coloradoense

Synonym:Haplopappus coloradoensis

Synonym:Machaeranthera coloradoensis

Synonym:Xylorhiza coloradoensis

Category
Alpines and Rock Gardens
Perennials

Water Requirements
Drought-tolerant; suitable for xeriscaping

Sun Exposure
Full Sun
Sun to Partial Shade

Foliage
Herbaceous

Foliage Color

Height
under 6 in. (15 cm)

Spacing
12-15 in. (30-38 cm)

Hardiness
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)

Where to Grow

Danger
N/A

Bloom Color
Rose/Mauve

Bloom Characteristics

Bloom Size

Bloom Time
Mid Summer
Late Summer/Early Fall

Other details

Soil pH requirements
5.1 to 5.5 (strongly acidic)
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)

Patent Information
Non-patented

Propagation Methods
By dividing the rootball
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