Taxonomy

Division:

Magnoliophyta | - Flowering plants

Family:

Asteraceae

Genus:

Cirsium

Species:

Cirsium grahamii

Growth Characteristics

Life Cycle:

Perennial

Growth Habit:

Forb/herb

Height:

3-4 ft

Light Requirements:

Full Sun

Drought Tolerance:

High

Bloom Months:

jul, aug, sep

Bloom Colors:

Purple

Native Range

United States: Arizona, New Mexico

Keystone Species Ranking

Bee Keystone:

★★☆☆☆ Based on number of native bee species using this genus for pollen and nectar (Source: National Wildlife Federation)

Soil Requirements

Soil Type:

well-drained, sandy or rocky soil

pH:

6.0 - 7.5 (slightly acidic to neutral)

Drainage:

excellent drainage required

Moisture:

dry to moderate

Notes:

native to arid regions, prefers open areas