Helianthus debilis subsp. silvestris
Helianthus debilis subsp. silvestris
This Texas-native woodland sunflower subspecies is a low-maintenance perennial suited to garden borders and naturalized areas in part shade to full sun. Water regularly during establishment, then reduce frequency once rooted; it handles brief dry periods reasonably well. It rewards gardeners with cheerful yellow daisy-like flowers that attract pollinators throughout summer.
Care Level
Low
Sun
Partial Shade
Water
Moderate
Growth Rate
Slow
Mature Height
18″ – 36″
Soil
loam
Life Cycle
Perennial
Spacing
18″
Watering Schedule
Every 7-10 Days • Water Deeply Until Soil Is Moist, Then Allow Top Inch To Dry Before Rewatering
Soil pH
5.2 – 7.2
Temperature
-20° – 90°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.