Overview
Aster 'Osternach' is a clump-forming, upright stems herbaceous perennial in the genus Aster, part of the Asteraceae family, with mid green, narrowly lance-shaped to linear foliage. Aster 'Osternach' grows best in full sun and partial shade, and tolerates loam soils and neutral pH. Its UK hardiness is rated H6. Suggested uses include borders, cottage gardens and mixed borders.
About
Aster 'Osternach' is a herbaceous perennial cultivar within the Aster genus, known for its clump-forming habit and upright stems. It features mid-green, narrowly lance-shaped to linear leaves and thrives in fertile, moisture-retentive loam soil with a neutral pH. This cultivar prefers full sun to partial shade, ideally in sheltered, south- or west-facing aspects. Hardy to UK zone H6, it is suitable for borders, cottage gardens, and mixed borders, providing interest through the summer and autumn seasons.
About the genus
Aster is a genus of perennial flowering plants in the family Asteraceae. Its circumscription has been narrowed, and it now encompasses around 170 species, all but one of which are restricted to Eurasia; many species formerly in Aster are now in other genera of the tribe Astereae. Aster amellus is the type species of the genus and the family Asteraceae.
Wikipedia contributors, "Aster (genus)", CC BY-SA 4.0 — Aster (genus)
Growing conditions
Best soil and position for Aster
- Sunlight
- Full sun, Partial shade
- Soil type
- Loam
- Soil pH
- Neutral
- Soil moisture
- Moisture-retentive
- Aspect
- South-facing, West-facing
- Exposure
- Sheltered
- UK hardiness
- H6
Plant details
Aster 'Osternach' size, habit and characteristics
- Plant type
- Herbaceous Perennial
- Habit
- Clump-forming, Upright stems
- Foliage
- Mid green, Narrowly lance-shaped to linear
- Suggested uses
- Borders, Cottage gardens, Mixed borders
Care notes
Pruning and caring for Aster 'Osternach'
- Propagation
- Division, Seed sowing
- Pest resistance
- Generally pest-resistant
- Disease resistance
- Generally disease-resistant
Frequently asked questions
Where is the best place to plant Aster 'Osternach'?
Aster 'Osternach' prefers full sun and partial shade. It suits sheltered positions.
What soil does Aster 'Osternach' need?
Aster 'Osternach' grows best in loam soil. It prefers neutral soil. Aim for soil that stays moisture-retentive.
Is Aster 'Osternach' hardy in the UK?
Aster 'Osternach' has an RHS hardiness rating of H6, meaning it is very hardy, tolerating -20 to -15°C across most of the UK.
How do I propagate Aster 'Osternach'?
Division, Seed sowing.
More in the Aster genus
- Aster ageratoides 'Ezo Murasaki'Balsam Aster
- Aster amellus 'Violet Queen'European Michaelmas Daisy
- Aster canus
- Aster divaricatusWhite Wood Aster
- Aster pyrenaeus
- Aster pyrenaeus 'Lutetia'
- Aster tataricus 'Jindai'Tatarian Aster
- Aster thomsoniiThomson's aster
