trefle.io · Taken Jul 27, 2021 by Peter Donaldson (cc-by-sa)
Orobanchaceae
Yellow owl's-clover
Orthocarpus luteus
Also known as Orthocarpus strictus, Yellow owl clover, Butter and eggs, Orthocarpus luteus
Flowering Plants · Native Plants · Owls Clover · Wildflower · Annual · Yellow Flowers · Native · Pollinator · Meadow · Western North America · Orobanchaceae · Prairie
Yellow owl's-clover is a charming annual wildflower native to western North American meadows, producing bright yellow blooms that attract pollinators throughout summer. It grows best in open, sunny to partly shaded areas with average moisture and well-drained soil. Ideal for wildflower meadow mixes, it is largely self-sustaining once established and requires little intervention.
Growing conditions
The details behind the basics
- Daily light
- 5 hours
- Watering
- Water moderately, allowing soil to dry slightly between waterings · Every 7-10 days
- Maintenance
- Low
- Soil
- loam
- Soil pH
- 6–8.5
- Temperature
- -25°F to 95°F
- Cycle
- Perennial
- Propagation
- Seed, Division, Cutting
Hardiness
USDA 4b-9b
Form & growth
Mature size and habit
- Mature height
- 12 in – 4 ft
- Spread
- 4 ft
- Spacing
- 8 in apart
- Growth rate
- Fast
- Root depth
- Medium
- Flowers
- Yellow
- Foliage
- Green · Coarse
Ecology & origin
Where it belongs and what it brings
- Native to
- Alberta, Arizona, British Columbia, California, Colorado, Idaho, Manitoba, Minnesota, Montana, Nebraska, Nevada, New Mexico, North Dakota, Ontario, Oregon, Saskatchewan, South Dakota, Utah, Washington, Wyoming
- Attracts
- Bees, Butterflies, Hummingbirds
Sources: trefle, usda
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