Sunflower

Helianthus annuus

Sunflower

Harvest Time

80 days

Difficulty

easy

Growing Methods

Container
Raised Bed

USDA Hardiness Zones

2
3
4
5
6
7
8
9
10
11

Optimal Growing Conditions

Full Sun (6-8 hours daily)
65-85°F (18-29°C)
Consistent moisture, well-draining soil

About Sunflower

Sunflowers are iconic summer flowers with large, daisy-like blooms that track the sun. Available in heights from dwarf (under 3 feet) to giant (over 12 feet), they produce edible seeds and make excellent cut flowers. These fast-growing annuals are perfect for children's gardens and attracting wildlife.

General Care Instructions

Sunlight Requirements

Full sun (6-8 hours minimum) for best flowering. Can tolerate partial shade but may produce fewer blooms.

Watering Needs

Water when the top inch of soil is dry. Established plants are moderately drought-tolerant but bloom best with regular watering.

Temperature Range

Tolerates a wide temperature range from 60-90°F (15-32°C). Protect from frost.

Fertilizer Requirements

Apply balanced fertilizer every 4-6 weeks during the growing season. Avoid high-nitrogen fertilizers which promote foliage over flowers.

Harvesting

Flowers can be harvested when blooms are fully open, typically 80 days from planting. Cut stems at a 45-degree angle in the morning when flowers are hydrated. Remove spent blooms to encourage more flowering.