How to grow Hollyhock Seeds
Hollyhocks are tall, classic garden flowers that bring height and colour to borders, cottage gardens, and pollinator-friendly planting schemes.
When to Sow Hollyhock Seeds
Plant hollyhock seeds in early spring after the danger of frost has passed, or in late summer for blooms the following year.
Germination
Keep soil moist but not waterlogged during germination, which usually takes 7–21 days depending on the variety.
Preparing the Soil
Loosen soil to a depth of 15–20 cm, removing weeds and other debris.
Sowing Seeds
Scatter seeds over the soil surface or lightly press them into the soil, avoiding burying them too deeply.
Sunlight & Temperature
Hollyhocks prefer full sun to partial shade and moderate temperatures.
Mulching
Mulching can help hollyhock plants retain moisture and warmth while also suppressing weed growth.
Support
As tall plants, hollyhocks may need stakes or plant supports to prevent them from toppling over.
Maintenance
Keep soil consistently moist and monitor for pests and diseases. You can fertilize lightly during the growing season, although it is not absolutely necessary.
Deadheading
Remove spent blooms regularly to prolong blooming and encourage new flower growth.