Goldsturm

Black-Eyed Susan

Zone 5b Save Garden

🌱 90d to harvest Upright

Sunlit, golden petals glow like warm embers, framing a boldly dark, near-black center that seems to drink in the light. Goldsturm…

Crop Dates

Milestone	Date
Start Indoors	Direct Sow
Last Frost	May 4th
Transplant / Sow Outdoors	May 4th
Harvest Begins	Aug 2nd
Harvest Ends	Oct 5th

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)	55
Min Night Temp (°F)	50
Harden Off (days)	Not Required

Recommended Companions

Rose Rhapsody Salvia

Cherry Brandy Coneflower

Rhapsody In Blue Salvia

Frequently Asked Questions

What pest or disease commonly affects Rudbeckia fulgida (Goldsturm), and how do I control it?

A common issue is powdery mildew, which shows up as a gray-white film on leaves, especially during humid stretches. Improve airflow by spacing plants and watering at the soil line, then remove heavily affected leaves early; for home control, use a labeled horticultural fungicide if mildew starts spreading. Also watch for leaf-chewing caterpillars and treat with a product labeled for caterpillars to protect fresh foliage and flower buds.

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

During active growth and bud formation, keep the soil evenly moist but not soggy—typically about 1 inch of water per week, adjusted for rainfall and heat. Water deeply when the top 1 inch of soil dries out, and avoid frequent light sprinkling that keeps foliage wet and encourages mildew. Once established, Goldsturm is fairly drought-tolerant, but consistent moisture improves flower count.

How can I tell when Goldsturm (Rudbeckia fulgida) is ready to harvest?

Harvest the flowers for cut arrangements when the ray petals are fully displayed and the central dark disk is firm and dark (not shriveled or mushy). For seed harvest, wait until the central disk florets turn dry and brown and the seeds loosen easily when gently rubbed. Aim for early morning harvest for the best stem and petal condition, since blooms wilt faster during hot afternoons.

Sunlit, golden petals glow like warm embers, framing a boldly dark, near-black center that seems to drink in the light. Goldsturm’s blooms arrive in abundance and hold their color with a crisp, satiny texture, forming a sturdy, mounding clump that looks radiant from late season onward. Ideal for brightening borders and naturalizing beds, this dependable Black-Eyed Susan brings long-lasting floral presence that invites pollinators to linger.

Sowing Tips

Transplant Conditions

Wait until soil reaches 55°F and nights stay above 50°F before moving outdoors.

Expert Note

For the fastest, most reliable blooms, sow to start outdoors after frost or buy started plants, then deadhead lightly in summer to keep flower production high.