When to Plant Black-Eyed Susans
Cheerful golden blooms that attract butterflies and tolerate drought. A backbone of the low-maintenance perennial garden.
The Short Answer
How to Grow Black-Eyed Susans
Rudbeckia are native wildflowers that belong in every American garden — they provide late-summer color when most perennials have finished, they're beloved by butterflies and native bees, and they're essentially maintenance-free once established. Goldsturm is the standard garden variety. Deadheading extends the bloom period, but leaving seed heads standing through winter feeds goldfinches and provides structural winter interest. They self-seed moderately — enough to fill gaps without becoming invasive. Cut back in late winter before new growth emerges.
Starting Seeds Indoors
Begin black-eyed susans seeds indoors 6 weeks before your average last frost date. Seeds need soil temperatures of at least 60°F to germinate, which typically takes 7-14 days. Provide 12 hours of light per day using a south-facing window or grow lights.
Transplanting
Move seedlings outside 1 weeks after your last frost date, once soil temperatures reach 60°F. Harden off seedlings for 7 days before transplanting by gradually exposing them to outdoor conditions.
Direct Sowing
Black-Eyed Susans can be direct sown 1 weeks after your last frost date. Plant seeds 0.125" deep, spaced 18" apart.
Growing Tips
Leave seed heads standing through winter for birds and visual interest. Self-seeds freely — deadhead if you don't want more.
Companion Planting
Good companions:
Black-Eyed Susans Planting Dates by State
Click your state for black-eyed susans planting dates specific to your location:
Last reviewed: March 29, 2026