Helianthus praecox subsp. praecox
Helianthus praecox subsp. praecox
The early sunflower subspecies is a Texas-endemic perennial that prefers partial shade and consistent soil moisture throughout the growing season. Plant in well-drained but reliably moist soil and avoid full midday sun in hot climates. This rare native is best appreciated in naturalistic or wildlife garden settings where pollinators can benefit from its cheerful yellow blooms.
Care Level
Moderate
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 Evenly Moist, Then Allow The Top Inch To Dry Before Watering Again
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.