About
Alcea rosea 'Halo Cerise' (Halo Series) is an upright biennial or a short-lived perennial that can reach heights of approximately 1.8 meters. It features rounded, lobed leaves that are slightly hairy and green in color. In summer, it showcases tall flower spikes adorned with bright pink blooms, each highlighted by a dark purple halo at the center.
About the genus
Alcea consists of sturdy biennials or short-lived perennials characterized by large, funnel-shaped blooms arranged in tall, upright racemes during the summer months.
Growing conditions
- Sunlight
- Full sun
- Soil type
- Chalk, Loam, Sand
- Soil pH
- Acid, Alkaline, Neutral
- Soil moisture
- Well-drained
- Aspect
- South-facing, West-facing
- Exposure
- Exposed, Sheltered
- UK hardiness
- H5
Plant details
- Plant type
- Annual Biennial, Herbaceous Perennial
- Habit
- Columnar upright
- Foliage
- Deciduous
- Height
- 1.5-2.5 metres
- Spread
- 0.5-1 metres
- Time to full height
- 1 year
- Suggested uses
- Cottage and informal garden
Care notes
- Cultivation
- Thrives in well-drained, moderately fertile soil in full sun. May need support on exposed sites, see staking perennials
- Pruning
- Cut back dead foliage after flowering, or pull out and discard - growing as annuals or biennials can help limit the spread of rust
- Propagation
- Propagate by seed, sown in gentle heat in midwinter, or in situ in spring
- Pest resistance
- May be susceptible to hollyhock rust
- Disease resistance
- May be susceptible to hollyhock rust