Plant in the autumn or spring, and lift and divide every three or four years. Propagation is by seeds sown in . light soil in April, transplanting the seedlings in April or by division in October or March for the named varieties.
How do you grow Sidalcea?
Sidalcea are best planted in a moist but well-drained soil of sand, chalk or loam within a neutral, acidic or alkaline PH balance. Sidalcea can be short-lived if they are planted in heavy soils. They are best positioned in an area of full sun or partial shade.
How do you grow Sidalcea from seed?
When growing Sidalcea plant species such as Prairie mallow outdoors from seeds then sow at a depth of about 3 mm in the early spring. Small varieties should be spaced about 25 cm apart and larger species 50 cm apart. These mallows like to grow in sunny areas of the garden that have average soil.