Choose a sunny location with well-draining soil
Prepare the soil by loosening it and removing weeds
Plant sunflower seeds 1 to 2 inches deep
Space seeds according to the variety’s mature size
Water the soil after planting
Keep the soil evenly moist until seeds germinate
Thin seedlings if multiple plants grow too close together
Water regularly as the plants grow
Support tall varieties with stakes if needed
Remove weeds around the plants
Watch for pests and diseases
Harvest seeds when the flower heads turn brown and dry