Flowers
Alcea 'Single Mixed'
Hollyhock
Excellent choice of Hollyhock flower to grow against a sunny wall or fence, where the tall flower spikes are protected from wind. Usually grown as a biennial, or short-lived perennial. They will self-seed unless the flower heads are removed.
- Plant type
- Biennial
- Position
- Full Sun
- Height
- 2.4m
- Spread
- 50cm
Growing calendar
Sowing & growing
Sow indoors Mar-April in moist, seed compost. Sow seeds 2cm apart and cover lightly with soil. Germinate at 15-21°C. When large enough, transplant seedlings and grow on in cool conditions. Plant out May-June 30cm apart. Handle by leaves rather than the fragile stem. Direct sow outdoors April-May. Can also be sown undercover June-Aug and overwintered in a greenhouse or cold frame for planting the following year.
Aftercare
Hollyhocks can be prone to rust, but this can be prevented with a fungicide treatment. Cut back faded flowers to prevent them self-seeding.
Gallery
Ref. SEA018