When to Plant Wallflower Seeds
Start Wallflower indoors 4-6 weeks before the last frost of the season or sow directly into the garden after the last frost of the season has passed.
Where to Plant Wallflower Seeds
Wallflowers must be planted in areas that have access to full sun (6-8 hours of sun per day), and prefers sandy loams that are well draining and mildly acidic. Wallflowers can suffer when exposed to harsh evening sun in hotter climates, morning sun is preferred.
How to Plant Wallflower Seeds
Wallflower seeds require light to germinate, so be careful not to cover them when planting. Learn more about germination light requirements here.
When started outdoors, scatter Wallflower seeds into moistened garden soil via broadcasting, and do not cover the seeds as light is required for germination. Keep the soil moist during the germination process. When started indoors, transplant seedlings into the garden 6-10 inches apart.
How to Care for Wallflowers
Pinch back spent blooms as needed to encourage reblooming. Once established, water Wallflowers sparingly but deeply, being sure to water more frequently during hot periods as necessary. Do not allow plants to sit in wet soils that don't drain properly. Established Wallflowers are drought tolerant.