Colorado greenthread
Thelespermaambiguum

Family: Asteraceae (ass-ter-AY-see-ee)
Genus: Thelesperma (thel-uh-SPER-muh)
Species: ambiguum (am-BIG-yoo-um)

Synonym:Thelesperma fraternum

Synonym:Thelesperma megapotamicum var. ambiguum

Category
Alpines and Rock Gardens
Perennials

Water Requirements
Drought-tolerant; suitable for xeriscaping

Sun Exposure
Full Sun

Foliage
Deciduous
Herbaceous
Smooth

Foliage Color

Height
18-24 in. (45-60 cm)

Spacing

Hardiness

Where to Grow

Danger

Bloom Color
Bright Yellow

Bloom Characteristics
This plant is attractive to bees, butterflies and/or birds

Bloom Size

Bloom Time
Mid Spring
Late Spring/Early Summer

Other details

Soil pH requirements

Patent Information

Propagation Methods
From seed; direct sow outdoors in fall
Self-sows freely; deadhead if you do not want volunteer seedlings next season

Seed Collecting
Allow seedheads to dry on plants; remove and collect seeds