Italian White
70d to harvest
Warm, luminous petals—creamy Italian White with a soft, buttery glow—open to bold, sun-catching faces that seem to hold the light. The centers are richly textured and inviting, with a sturdy, upright presence that makes a striking statement in beds and borders. Grow Italian White for its long, showy bloom span and pollinator magnetism—ideal for fresh garden color and abundant backyard wildlife visits.
Crop Dates
Growing note: In frost-free Zone 11a, 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 | Dec 10th |
| Harvest Ends | Feb 28th |
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) | 55 |
| Min Night Temp (°F) | 35 |
| Harden Off (days) | Not Required |
Recommended Companions
Frequently Asked Questions
How often should I water Italian white sunflower during its main growing phase?
During the active growth and bud-to-bloom period, keep soil consistently moist but not waterlogged—about 1 inch (2.5 cm) per week total, adjusted for heat and wind. Water deeply when the top 1–2 inches of soil feel dry, because shallow watering encourages shallow roots. Inconsistent watering around flowering can lead to smaller heads and uneven filling.
How can I tell when Helianthus annuus (Italian white) is ready to harvest?
Harvest when the back of the flower head turns yellow to brown and the bracts feel dry, and the seeds are plump with their mature color. For Italian white (for seed), wait until the head looks fully developed and the outer seeds detach easily when rubbed. Cut the heads, then dry them further in a warm, airy place until seeds are hard and fully dry to prevent mold.