Boraginaceae
Limestone phacelia
Phacelia affinis
Also known as Limestone scorpionweed, Rock phacelia, Phacelia rugulosa, Phacelia affinis var. patens
Flowering Plants · Native Plants · Phacelia · Native Wildflower · Southwest · Pollinator · Rocky Soil · Blue Flowers · Xeriscape · Perennial · Arizona · Boraginaceae
Limestone phacelia is a native wildflower from arid southwestern regions that prefers rocky, well-draining soils in partial shade. It produces attractive blue-purple blooms that are highly appealing to native pollinators. Best grown outdoors in xeriscapes or native plant gardens; it dislikes heavy clay soils and standing water.
Growing conditions
The details behind the basics
- Daily light
- 4 hours
- Watering
- Water until soil is evenly moist, allow the top inch to dry before watering again · Every 7-10 days
- Maintenance
- Moderate
- Soil
- loam
- Soil pH
- 5–7
- 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
- 12 in apart
- Growth rate
- Moderate
- Root depth
- Medium
- Flowers
- Yes
- Foliage
- Coarse
Ecology & origin
Where it belongs and what it brings
- Native to
- Arizona, California, Mexico Northwest, Nevada, New Mexico, Utah
- Attracts
- Bees, Butterflies, Moths
Sources: trefle, usda
More Phacelia
Related plants from the same genus
Buy this plant
No nurseries currently list it
No nursery lists Limestone phacelia right now.