Helianthus praecox subsp. runyonii
Helianthus praecox subsp. runyonii
Runyon's sunflower is an extremely rare Texas native subspecies with slow growth habits, making it a specialist collector's plant for native habitat enthusiasts. Plant in a partially shaded spot with consistent moisture and well-draining soil. It is best used in native prairie restoration or wildlife garden settings rather than general ornamental planting.
Care Level
Moderate
Sun
Partial Shade
Water
Moderate
Growth Rate
Slow
Mature Height
18″ – 36″
Soil
loam
Life Cycle
Perennial
Spacing
30″
Watering Schedule
Every 7-10 Days • Water Deeply To Moisten The Root Zone, Allowing The Top Inch Of Soil To Dry Slightly Between Waterings
Soil pH
5.2 – 7.2
Temperature
-10° – 85°F
Mature Spread
up to 24″
Root Depth
Medium
Foliage
Coarse
Native to
Attracts
Sources
Data: trefle, usda
No nurseries currently have this species in stock.