Perennial Sunflowers - Key Growing Information

An arrangement of perennial sunflowers, a type that demands little maintenance yet blooms generously.

DAYS TO GERMINATION:

14 days at 70°F (21°C).

SOWING:

Transplant: Sow 8-10 weeks before last frost. Transplant into cell packs or individual containers when the first true leaves appear. Harden off and transplant after the last frost. Direct seed: Sow after the last frost when the soil temperature is 70°F (21°C).

LIGHT PREFERENCE:

Sun.

SOIL REQUIREMENTS:

Almost any soil type.

PLANT SPACING:

18-24". Spreads rapidly and will need to be divided every third year.

HARDINESS ZONES:

Zones 3-9.

HARVEST:

Fresh: Harvest when 1/4-1/3 of the flowers on a stem are open.

USES:

Cut flower. Excellent plant for back of perennial borders. Good for naturalistic gardens and wildflower plantings.

SCIENTIFIC NAME:

Helianthus maximiliani