Black-Eyed Susan
60d to harvest
Velvety petals in warm golden amber flare outward from a nearly inky, button-dark center, creating a sunburst bloom that feels luminous even on the calmest days. Black-Eyed Susan forms sturdy, upright clumps with a graceful, airy presence—its flowers hold their shape and texture beautifully as they sway. Grow it for long-lasting garden color in beds and borders, where its bold, high-contrast blooms make a striking statement from early summer into fall.
Crop Dates
Growing note: In frost-free Zone 13b, grow this cool-season crop during the cooler dry season (October–February).
| Milestone | Date |
|---|---|
| Start Indoors | — |
| Climate | Frost-Free Climate |
| Transplant / Sow Outdoors | Oct 1st |
| Harvest Begins | Nov 30th |
| Harvest Ends | Feb 28th |
Crop Details
| Trait | Value |
|---|---|
| Days to Maturity | 60 |
| 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 |
Recommended Companions
Frequently Asked Questions
How often should I water Black-Eyed Susan during the main growing phase (after seedlings establish)?
Water deeply about 1 inch per week during active growth, then let the top 1–2 in. of soil dry slightly before watering again. In hot, dry weeks you may need 2–3 waterings per week, but always avoid soggy soil since Rudbeckia quickly suffers from root problems. A simple test: if the soil feels dry and crumbly at 1–2 in. down, it’s time to water.
How can I tell when Black-Eyed Susan is ready to harvest?
Harvest cut flowers when the center disk is mostly open and the petals are fully expanded, typically around 60 days from sowing. For seed, wait until the ray petals wither and fall and the central disk turns dark and dry; shake the head gently and harvest when seeds don’t cling loosely. Dry harvested seed heads in a well-ventilated area for 1–2 weeks before storing.