Helianthus annuus

Tournesol    Sunflower   Girasol  Sonnenblume

Crop Rotation Group :Miscellaneoussunflower

Soil :Any sunny site with good drainage.

Position : Full sun.

Frost tolerant : Sunflower seedlings often escape damage from light frost, but sunflowers are warm-natured plants with no tolerance of freezing temperatures.


Helps: annuus Peppers, corn, cucumber, soybeans, tomatoes, swan plant
Helped by:
swan plant
pole beans


Sow and Plant :Sow sunflowers from late spring to early summer. Where summers are long and warm, make a second sowing for autumn harvest. Poke seeds into the soil about 1 inch (3 cm) deep and 3 inches (8 cm) apart. Thin to 12 inches (30 cm) apart in all directions for dwarf varieties. Extremely tall sunflowers or those that grow into multi-branched bushes may require 3 feet (1 meter) between plants.

Germination:  days

Spacing :Single Plants: 11″ (30cm) each way; Rows: 11″ (30cm) with 11″ (30cm) row gap

Feeding : Mix a light application of a balanced organic fertilizer into the soil prior to planting.

Harvesting :Explore difference sunflower varieties, which vary in size, color, growth habit, and the culinary quality of the seeds. Cut sunflower heads when some of the seeds inside the edges appear ripe and fall away when rubbed, or when birds start harvesting them for you. Store in a warm, dry place.

Time to harvest: days

Troubleshooting :Sunflowers will twist around to face the south or west, seeking the most abundant source of sun, which may be away from your garden.

Notes :A rare « shelter » plant, sunflowers can be used to create shade for sun-stressed crops. Tall varieties can serve as trellises for pole beans. Was grown as a companion for corn(maize); ants herd aphids onto sunflowers, keeping them off neighboring plants. Works as a trap plant for thrips keeping them off of bell peppers. Planting near swan plants help sunflowers grow rapidly