trefle.io · Taken Aug 2, 2018 by Tela Botanica − Alain Bigou (cc-by-sa)
Onagraceae
Narrowleaf evening primrose
Oenothera tetragona
Also known as Oenothera fruticosa f. incana, Oenothera fruticosa var. ambigua, Kneiffia latifolia, Kneiffia tetragona var. hybrida
Flowering Plants · Native Plants · Evening Primrose · Perennial · Yellow Flowers · Pollinator · Native Wildflower · Part Shade · Border Plant · Cottage Garden · Oenothera
Narrowleaf evening primrose thrives in partial shade with moderate, consistent moisture and well-drained soil. It is a low-maintenance perennial that rewards gardeners with cheerful yellow blooms from late spring through summer. Plant in borders or naturalized areas where its pollinator-friendly flowers can shine.
Growing conditions
The details behind the basics
- Daily light
- 4 hours
- Watering
- Water moderately until soil is evenly moist; allow top inch to dry between waterings · Every 7-10 days
- Maintenance
- Low
- Soil
- loam
- Soil pH
- 4.5–7
- Temperature
- -40°F to 95°F
- Cycle
- Perennial
Hardiness
USDA 3a-9b
Form & growth
Mature size and habit
- Mature height
- 12 in – 4 ft
- Spread
- 3 ft
- Spacing
- 18 in apart
- Growth rate
- Moderate
- Root depth
- Medium
- Flowers
- Yes
- Foliage
- Medium
Ecology & origin
Where it belongs and what it brings
- Native to
- Alabama, Connecticut, Czechoslovakia, Delaware, District Of Columbia, Georgia, Germany, Illinois, Indiana, Kentucky, Louisiana, Maine, Maryland, Masachusettes, Michigan, Missouri, Myanmar, New Hampshire, New Jersey, New York
- Attracts
- Bees, Butterflies, Moths
Sources: trefle, usda
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