Music Box

Sunflower

70d to harvest

Golden petals unfurl with a poised, music-box charm—bright, warm, and luminous in the garden light. “Music Box” forms compact, well-branched plants that carry abundant blooms with a rich, pollen-bright center, offering a satisfying visual texture that feels almost velvet-soft at a distance. A nectar plant with lively appeal, it’s ideal for creating a continuous ribbon of color in beds and borders while you save seed from your favorite heads for future sowings.

Crop Dates

Growing note: In frost-free Zone 12b, 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)	50
Harden Off (days)	Not Required

Frequently Asked Questions

What’s a common pest or disease problem for Helianthus annuus (sunflower) and how do I control it at home?

Powdery mildew is common on Helianthus annuus, especially when nights are humid and leaves stay damp. Water at the soil line, avoid wetting foliage, and remove heavily infected leaves early to slow spread. If it keeps recurring, spray a labeled potassium bicarbonate or sulfur-based fungicide, following the product directions and avoiding treatment during peak heat.

How often should I water Helianthus annuus during the main growth phase (roughly after establishment until it starts blooming)?

During main growth, keep the top 2–4 inches of soil evenly moist but not soggy, watering deeply when it dries out at that depth. In typical warm weather, that’s often about 1 inch of water per week total (from rainfall plus irrigation), adjusted upward for sandy soil or hotter spells. Avoid frequent light sprinkling that encourages shallow roots and mildew-prone damp foliage.

How can I tell when my Helianthus annuus “Music Box” sunflower is ready to harvest?

Harvest when the backs of the flower heads turn from green to yellow/brown and the seeds look full and tight in the hulls. Press a seed with your fingernail—if it’s firm rather than soft, it’s ready; if it’s still milky/loose, wait a few more days. Cut the heads with a short stem and dry them in a warm, airy spot if you’re saving seeds.