Evening Primrose, King’s Cure-All Flowers
The night-flowering Evening Primrose (Oenothera biennis) has delicate four-petal lemon-scented lemon-yellow 2" blossoms that close every day by noon, opening again in the late afternoon and evening. Plants grow 2'-6' tall on hairy stems tinged with purple.
Also called King’s Cure-All for its herbal and medicinal properties.
- Life cycle: Biennial
- Bloom season: Spring, summer, fall
- Attracts: Birds, bees, butterflies, moths, and other pollinators
- Flower meaning: Bashfulness, inconstancy, longevity, youth
SEED PLANTING TIPS
- Botanical name: Oenothera biennis
- Hardiness zones: 4-9
- Planting season: Spring, summer
- Days to maturity: 2nd year
- Cold stratify: Yes
- Depth to plant seeds: Lightly cover - seeds need light to germinate
- Spacing between plants: 12"-18" apart
- Days to germinate (sprout): 15-30 days
- Germination soil temps: 65F-70F
- Soil types: Sandy, loamy, rich, well-drained
- Soil pH: 5.5-7.5
- Water needs: Average
- Sun needs: Full sun, part shade
- Frost tolerant: No
- Drought tolerant: Yes
- Deer resistant: Yes
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