Onagraceae
Chylismia cardiophylla subsp. robusta
Chylismia cardiophylla subsp. robusta
Also known as Oenothera cardiophylla subsp. robusta, Camissonia cardiophylla subsp. robusta
Flowering Plants · Native Plants · Chylismia · California Endemic · Rare Native · Desert Perennial · Yellow Flowers · Onagraceae · Mediterranean Garden · Low Water · Rock Garden · Drought Tolerant
The robust heartleaf suncup is a rare California-endemic subspecies best suited to sandy or gravelly, well-drained soils in gardens with a Mediterranean climate. Like its relatives, it prefers infrequent deep watering and does not tolerate standing water or heavy clay. It is an excellent choice for native plant restoration gardens or drought-tolerant landscape designs.
Growing conditions
The details behind the basics
- Daily light
- 5 hours
- Watering
- Water deeply but infrequently; allow soil to dry 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
- 20 in apart
- Growth rate
- Fast
- Root depth
- Medium
- Flowers
- Yes
- Foliage
- Coarse
Ecology & origin
Where it belongs and what it brings
- Native to
- California
- Attracts
- Bees, Butterflies
Sources: trefle, usda
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