Moreno

Black-eyed Susan

90d to harvest

Velvety petals in rich, sun-warmed gold flare outward from a near-black, velvety center—Moreno’s Black-eyed Susan is a bold, high-contrast bloom that seems to glow even on hazy days. The flowers hold a sturdy, slightly tousled texture with a classic daisy silhouette, making them especially striking in mass plantings and long-lasting in the garden. Expect dependable color through the growing season as this biennial-to-perennial performer settles in and returns with confidence year after year.

Crop Dates

Milestone	Date
Start Indoors	Feb 9th
Last Frost	Apr 20th
Transplant / Sow Outdoors	Apr 13th
Harvest Begins	Jul 12th
Harvest Ends	Oct 20th

Crop Details

Trait	Value
Days to Maturity	90
Sun Requirements	Full Sun
Growth Habit	Upright
Support Needed	None
Planting Depth	Normal
Germination Temp (°F)	70
Min Soil Temp (°F)	45
Min Night Temp (°F)	35
Harden Off (days)	7

Frequently Asked Questions

What’s the most common disease problem for Rudbeckia hirta (black-eyed Susan) and how do I treat it?

Rudbeckia hirta commonly gets powdery mildew in humid, still conditions. Start by improving airflow—space plants about 12–18 inches apart and avoid overhead watering—then spray with an appropriate fungicide labeled for powdery mildew if symptoms spread. Remove and discard heavily infected leaves early so the mildew doesn’t build up across the season.

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

During active growth (from when plants are established until flowering), water deeply about 1 inch per week, adjusting for rain. Let the top 1–2 inches of soil dry between waterings to prevent crown and root issues, since Rudbeckia prefers evenly moist but not soggy soil. In hotter weather, you may need more frequent watering, but always check soil dryness first.

How can I tell when Rudbeckia hirta is ready to harvest?

Harvest seed when the flower heads turn brown and dry, and the “black-eyed” center has matured into firm seeds that loosen easily when you rub the head. For fresh cut flowers, pick blooms when the ray petals are fully expanded and the central disk is still fairly firm and bright. By around 90 days from sowing under good conditions, plants should be in consistent bloom and seed-head development.