Sierra Sundrop
SIERRA SUNDROP
Calylophus hartwegii

Although this flowering beauty looks dainty, it can handle a good dose of heat and drought. When planted in mass, Sierra Sundrop makes for a beautiful and full groundcover. May need partial shade in hotter climates such as Lake Havasu City.

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GARDENING BASICS
Type: Groundcovers
Hardiness:
Water: Low
Sun Exposure: Full
GROWTH
Growth Rate: Fast
Average Size: 1’ H × 2’ W
Coverage: 3 square feet
FOLIAGE
Foliage Type: Deciduous
Foliage Color: Green
FLOWERS & FRUITS
Flower Color: Bright yellow with a 24 hour lifespan. Each flower opens in the evening, then closes the next afternoon just before the next set of flowers open up, and dries to a pinkish, crumpled wad.
Flower Season: Late Spring into Summer
Fruit: A cylindrical seed capsule located behind the sepals in what looks like the enlarged top portion of the flower stalk.
MORE COMMENTS
Thorns: No
Allergies: Unknown
This plant tolerates weekly water only in very well drained soil, and therefore requires very infrequent watering once established. It does not like high humidity. Attracts butterflies, sphinx moths, bees, and birds. This plant is pollinated by sphinx moths.