Moulin Rouge

Sunflower

65d to harvest

Velvet-dark petals blaze outward from a warm, honeyed center—Moulin Rouge delivers a dramatic, painterly bloom that seems to glow even in the brightest beds. The flower heads are richly textured, with layered, slightly ruffled rays that hold their color beautifully as they mature, making a striking statement from bud to full face. Grow Moulin Rouge for showy, long-lasting ornamental blooms that invite pollinators to linger all season long.

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 5th
Harvest Ends	Feb 28th

Crop Details

Trait	Value
Days to Maturity	65
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)	40
Harden Off (days)	Not Required

Frequently Asked Questions

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

Powdery mildew is a frequent problem on Helianthus annuus, especially in warm weather with humid nights. Start by improving airflow (space plants well) and remove heavily affected lower leaves; for control, spray a labeled fungicide such as potassium bicarbonate or a horticultural soap-based option early when you first see the white dusting. Avoid wetting the leaves and don’t compost diseased foliage so spores aren’t reintroduced to the bed.

How often should I water Helianthus annuus during its main growing phase?

During active growth and before bloom, keep soil evenly moist but not waterlogged—typically about 1–2 inches of water per week total, adjusted for heat and rainfall. Water deeply once or twice weekly so moisture reaches the root zone, and let the top few centimeters of soil dry slightly between waterings. Sunflowers wilt quickly if drought-stressed during bud formation, so check soil moisture regularly from the plant base.

How do I know when Helianthus annuus ‘Moulin Rouge’ is ready to harvest?

Harvest when the back of the flower head turns from green to yellow, and the outer petals begin to fade; the head should feel firm and heavy. The seeds develop fully and look plump at maturity—typical timing is around 65 days from sowing for your crop. For best seed harvest, cut the head when most seeds are mature and let it dry upside down in a warm, airy spot until the seeds release easily.