Growing Black-Eyed Susans in Zone 10B

Black-eyed Susans are tough, cheerful native wildflowers that bloom all summer without demanding much — pollinators and goldfinches adore them.

Zone 10B has a very long growing season with mild winters. Many crops can be grown nearly year-round with successive plantings.

Top Growing Tips

• Native to North America — extremely drought-tolerant once established
• Self-seeds freely; deadhead to control or leave seed heads for birds
• Divide clumps every 3-4 years to maintain vigor
• Works beautifully in naturalized areas, meadow gardens, and borders
• Deer-resistant; one of the few flowers they reliably leave alone

Companion Planting

Good companions: coneflowers, lavender, ornamental grasses, bee balm

Avoid planting near: Poorly-drained soil — susceptible to root rot

Harvest Timeline

Ornamental; leave seed heads standing in fall for wildlife

About Zone 10B

USDA Hardiness Zone 10B has an average last spring frost around Jan 15 and first fall frost around Dec 31. All planting dates above are calculated from these frost dates. Your specific location may vary — check with your local extension office for the most accurate dates.