Onagraceae
Chylismia cardiophylla subsp. cardiophylla
Chylismia cardiophylla subsp. cardiophylla
Also known as Oenothera cardiophylla var. petiolaris
Flowering Plants · Native Plants · Chylismia · Desert Wildflower · Southwestern Native · Drought Adapted · Yellow Flowers · Onagraceae · Rock Garden · Arid Plant · California Native · Low Water
Heartleaf suncup is a desert-adapted perennial native to the arid regions of California, Arizona, and northwestern Mexico, doing best in rocky or sandy, well-drained soils. It tolerates partial shade and low water once established, making it a good candidate for water-wise southwestern gardens. Avoid overwatering and heavy clay soils, which can cause root rot.
Growing conditions
The details behind the basics
- Daily light
- 5 hours
- Watering
- Water deeply but infrequently; allow soil to dry out significantly between waterings · Every 10-14 days
- Maintenance
- Low
- Soil
- loam
- Soil pH
- 6–7.2
- Temperature
- -20°F to 90°F
- Cycle
- Perennial
Hardiness
USDA 5a-9b
Form & growth
Mature size and habit
- Mature height
- 18 in – 3 ft
- Spread
- 2 ft
- Spacing
- 18 in apart
- Growth rate
- Fast
- Root depth
- Medium
- Flowers
- Yes
- Foliage
- Coarse
Ecology & origin
Where it belongs and what it brings
- Native to
- Arizona, California, Mexico Northwest
- Attracts
- Bees, Butterflies
Sources: trefle, usda
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