Taxonomy

Division:

Magnoliophyta | - Flowering plants

Family:

Onagraceae

Genus:

Oenothera

Species:

Oenothera longissima

Growth Characteristics

Life Cycle:

Biennial | Perennial

Growth Habit:

Forb/herb

Height:

8-12 ft

Light Requirements:

Full Sun

Drought Tolerance:

High

Bloom Months:

may, jun, jul, aug, sep

Bloom Colors:

Yellow

Native Range

United States: Arizona, California, Colorado, Nevada, Utah

Keystone Species Ranking

Caterpillar Keystone:

★★★★☆ Based on number of butterfly and moth species using this genus as host plant (Source: National Wildlife Federation)

Bee Keystone:

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

Soil Requirements

Soil Type:

sandy, well-drained, nutrient-poor soil

pH:

6.0 - 8.0 (slightly acidic to neutral)

Drainage:

excellent drainage required

Moisture:

dry to moderate

Notes:

native to arid and semi-arid regions

Germination Information