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Sunflower Growing Guide
Asteraceae family
Days to Harvest90 days
SunlightFull Sun
Frost ToleranceNone
Spacing1/sqft (12" apart)
Germination7-14 days
HardinessTender
Germ. Temp75°F
Start Indoors3 weeks before last frost
Companion Planting
Avoid Planting Near
PotatoesPlanting Dates by Zone
Frequently Asked Questions
How long does it take to grow Sunflower?
Sunflower takes approximately 90 days from planting to harvest.
How much sun does Sunflower need?
Sunflower requires full sun (6+ hours direct sunlight per day).
How far apart should I plant Sunflower?
Plant Sunflower at 1/sqft (12" apart) using square foot gardening spacing.
Can Sunflower survive frost?
Sunflower is frost-sensitive and should not be exposed to frost.
What are good companion plants for Sunflower?
Good companion plants for Sunflower include Cucumbers, Squash, Corn, Beans. Avoid planting near Potatoes.
How long does Sunflower take to germinate?
Sunflower seeds germinate in 7-14 days at an optimal temperature of 75°F.
When should I start Sunflower seeds indoors?
Start Sunflower seeds indoors 3 weeks before your last frost date, then transplant 1 weeks after last frost.
Plan Your Sunflower Garden
Track Sunflower from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.
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