Taxonomy

Division:

Magnoliophyta | - Flowering plants

Family:

Onagraceae

Genus:

Oenothera

Species:

Oenothera cordata

USDA Symbol:

OECO6

Growth Characteristics

Life Cycle:

Annual | Biennial

Growth Habit:

Forb/herb

Height:

60 cm

Drought Tolerance:

Medium

Bloom Months:

may,jun,jul,aug

Bloom Colors:

yellow

Keystone Species Ranking

Caterpillar Keystone:

★★☆☆☆ Butterfly & moth species supported by this genus (NWF)

Pollen Specialist Bee Keystone:

★★★☆☆ Native pollen specialist bee species supported by this genus (NWF)

Garden & Ecology Notes

Wildlife Value:

bees, moths

Fragrant:

Yes

Soil Requirements

Soil Type:

sandy, well-drained, nutrient-poor soil

pH:

5.5 - 7.0 (slightly acidic to neutral)

Drainage:

excellent drainage required

Moisture:

dry to moderate

Notes:

native to coastal dunes and sandy plains

Propagation & Germination

Stratification:

Cold/moist stratification required — 30–90 days

Germination Time:

14–30 days

Notes:

Seeds require light for germination; surface sow and do not cover.

The above propagation data sourced from Claude AI