Space plants 23-30 cm (9-12″) apart.
Just below soil surface
Partial shade and moist, fertile soil. pH between 5.5 and 7.0
Seeds sprout in 14-28 days.
Powdery mildew, leaf spot, rust
Can be sown in spring and fall, or in successive sowings every 2 to 3 weeks up to 6 weeks before the first frost. Does not transplant well.
Keep well watered during growing season.
Cool, perennial and annual