Toto

Black-eyed Susan

70d to harvest

Velvety, sunlit petals glow in warm honey-gold around a velvety, inky center—Toto’s Black-eyed Susan brings a bold, long-lasting bloom that feels almost luminous in the garden. The flowers hold their shape with a softly textured, slightly tousled look, creating a rich tapestry of color from early summer into fall. Grow Toto for striking ornamental impact in borders and beds, where its vivid contrast and dependable flowering make it a standout perennial/biennial showpiece.

Crop Dates

Growing note: Frost-free Zone 11b supports continuous outdoor production.

Milestone	Date
Climate	Frost-Free Climate
Growing Approach	Continuous Production

Crop Details

Trait	Value
Days to Maturity	70
Sun Requirements	Full Sun
Growth Habit	Upright
Support Needed	None
Planting Depth	Normal
Germination Temp (°F)	70
Min Soil Temp (°F)	50
Min Night Temp (°F)	40
Harden Off (days)	7

Frequently Asked Questions

What pest or disease commonly affects Rudbeckia hirta (black-eyed Susan), and how can I control it?

Rudbeckia hirta is prone to powdery mildew in humid weather and can also suffer from leaf spot. Space plants so air can circulate, water at the base to keep foliage dry, and remove the worst-affected leaves early to slow spread; if mildew becomes widespread, use an appropriate fungicide labeled for ornamental asters and follow label timing (often repeated applications are needed).

How often should I water Rudbeckia hirta during the main growing phase?

During active growth (after seedlings establish until flowering), water deeply when the top 1 inch of soil dries, typically about once or twice per week depending on your heat and soil type. Keep moisture consistent—Rudbeckia hirta tolerates some drought once established, but irregular watering can reduce bloom quality and encourage stress-related issues.

How do I know when Rudbeckia hirta is ready to harvest?

Harvest for cut flowers when the central disk florets are fully colored and the first ray petals are open, but before the flower heads start to look ragged or the disk begins to seed over. For seed harvesting, wait until the seed heads are dry and brown and the seeds release easily when rubbed between your fingers.