← Back to Plant Explorer
flowerAnnualEdible

Sunflower

Helianthus annuus

Also known as: Sunflower

Tall cheerful flower with edible seeds. Attracts pollinators and birds. Grows quickly in warm weather.

Sunflower

Growing Requirements

SunFull Sun
WaterLow
Soil Type
Soil Drainage
Soil pH
Plant Spacing12–24″
Row Spacing24–36″
Planting Depth1–1.5″
Height48–120″
Spread12–24″
✗ Not Container Friendly✓ Raised Bed Friendly

Planting Schedule

Direct Sow (Spring)

1–9 weeks after last frost

Germination

7–10 days

Days to Harvest

70–100 days

Zone Suitability

USDA Hardiness Zones

1
2
3
4
5
6
7
8
9
10
11
12
13

Zones 211

Cannot overwinter outdoors

Stake tall varieties. Leave seed heads for birds or harvest when back of head turns brown.

Companion Plants