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About this product
Aster 'Alpha White'
Aster 'Alpha White'
3L pot
Plant Highlights: Crisp white daisy-like flowers • Long late-season display • Compact, bushy habit • Excellent for pollinators • Ideal for borders and containers
Overview
Aster 'Alpha White' is a compact herbaceous perennial producing masses of bright white, daisy-like flowers with golden-yellow centres from late summer into autumn. Its clean, fresh colour brightens the garden at the end of the growing season, providing valuable interest when many summer-flowering plants are fading.
The naturally tidy, well-branched habit makes it an excellent choice for sunny borders, patio containers and smaller gardens. Rich in nectar, the flowers attract bees, butterflies and other pollinating insects, making this cultivar a valuable addition to wildlife-friendly planting schemes.
Why We Love It
- Elegant white flowers provide fresh late-season colour.
- Long flowering period from late summer into autumn.
- Compact growth is ideal for borders and containers.
- Attractive to bees, butterflies and other pollinators.
- Pairs beautifully with ornamental grasses and autumn-flowering perennials.
Plant Details
| Attribute | Information |
|---|---|
| Botanical Name | Aster 'Alpha White' |
| Common Name | Michaelmas Daisy |
| Plant Type | Herbaceous perennial |
| Foliage | Mid-green deciduous foliage |
| Flower | White daisy-like flowers with golden-yellow centres |
| Flowering Period | Late summer to autumn |
| Growth Habit | Compact, upright and bushy |
| Position | Full sun |
| Soil | Fertile, moist but well-drained soil |
| Mature Height | Approximately 35–45cm |
| Mature Spread | Approximately 35–45cm |
| Hardiness | Hardy in Irish gardens. Dies back naturally in autumn and produces fresh growth in spring. Best grown in well-drained soil. |
Growing Guide
Position
Plant in full sun for the best flowering and compact, sturdy growth.
Watering
Water regularly during the first growing season to establish a healthy root system. Once established, water during extended dry spells, particularly when grown in containers.
Soil
Grow in fertile, moisture-retentive but well-drained soil enriched with organic matter. Avoid prolonged winter waterlogging.
Hardiness and Winter Care
This hardy herbaceous perennial overwinters outdoors throughout Ireland. The foliage dies back after flowering and new shoots emerge in spring. Applying a mulch in late winter will help improve soil structure and retain moisture.
Routine Care
Deadhead faded flowers to encourage continued blooming. Cut back old stems after flowering or in late winter before fresh growth appears, and divide mature clumps every few years to maintain vigour.
Perfect For
- Sunny perennial borders.
- Cottage-style gardens.
- Pollinator-friendly planting schemes.
- Patio pots and decorative containers.
- Planting alongside ornamental grasses and other autumn-flowering perennials.
Good to Know
The supplied pot size refers to the nursery container and not the plant's mature size. The compact 'Alpha' series has been bred to produce abundant flowers on neat, well-branched plants that rarely require staking.
Product Information
- Botanical name: Aster 'Alpha White'
- Supplied in a 3L nursery pot.
Specifications & use
- Product type
- Herbaceous
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