Asters ‘Beauty Dark Blue’ – Early-Blooming Mountain Charm
The Alpine Aster ‘Beauty Dark Blue’ (Aster alpinus) is a compact perennial valued for its vivid violet-blue petals and sunny yellow centers that brighten the garden in late spring to early summer. As one of the earliest asters to bloom, it delivers color long before other varieties appear. Its low, mounded growth and fine-textured foliage make it ideal for edging pathways, filling rock gardens, or softening borders. Adaptable and resilient, it thrives in cooler climates and well-drained soils, rewarding gardeners with cheerful blooms that attract butterflies and bees alike.
Applications in the Garden
Excellent choice for rock gardens, alpine beds, and sunny borders
Works beautifully at the front of mixed perennial plantings
Pairs well with creeping phlox, dianthus, and early irises
Great for pollinator gardens thanks to its nectar-rich blooms
Perfect for containers or small-space gardens needing a splash of early color
Planting Tips - Asters
Choose a full-sun site with well-drained, moderately fertile soil
Space plants 12–15 inches apart for airflow and healthy growth
Water regularly during establishment, then allow soil to dry slightly between waterings
Deadhead faded blooms to extend the flowering season
Divide clumps every few years in early spring to rejuvenate growth
Avoid overly rich soil, which can cause floppy stems and reduced blooms
Plant Biography and Growing Environment
| Botanical Name: | Aster Alpinus |
| Variety Name: | Beauty Dark Blue |
| Height: | 12″ |
| Hardiness Zone: | 3-8 |
| Sun or Shade: | Full sun |
| Plant Classification: | Perennial |
| Planting Season: | Spring or Fall |
| Bloom Season: | Spring – Summer |
| Bloom Cycle: | Only blooms once |
| Bloom Duration: | 4 weeks |
| Planting Depth: | 2″-3″ |
| Soil Requirements: | Neutral pH, to slightly acidic or slightly basic. average to poor or sandy, well-draining soils |
| Water Requirements: | Average |
Troubleshooting - Asters
Few or no flowers: Often caused by too much shade or soggy soil; move to a sunnier, drier spot
Powdery mildew: Encourage airflow and avoid overhead watering to prevent fungal spread
Leggy or sprawling growth: Usually from excess nitrogen; reduce feeding and trim lightly after bloom
Wilting in heat: Normal midday reaction in hot weather; plants typically recover by evening
Crown rot: Improve drainage and avoid waterlogging, especially in heavy soils
FAQ - Asters
Q: Are asters toxic to pets or people?
A: No, asters are non-toxic and safe to grow around both pets and children.
Q: When do Alpine asters bloom?
A: They bloom in late spring to early summer, earlier than most aster species.
Q: Will asters rebloom if cut back?
A: They can produce a light second flush if spent flowers are removed promptly after the first bloom period.
Q: Can Alpine asters handle cold winters?
A: Yes, they’re hardy in northern climates and tolerate frost well, making them an excellent choice for cooler regions.