Overview
Aster agertoides 'Ezo Murazaki' is a perennial in the genus Aster, part of the Asteraceae family. Aster agertoides 'Ezo Murazaki' grows best in full sun and partial shade, and tolerates well-drained and loamy soils and neutral and slightly acidic pH. Its UK hardiness is rated H5. Suggested uses include borders, late-season color and cut flowers. It is native to Sichuan, Assam, Shikoku, Hubei, Korea, Russian Far East, Japan and Myanmar.
About
Aster agertoides 'Ezo Murazaki' is a cultivar in the genus Aster (family Asteraceae) that flowers from August to October, providing late-season blooms. It extends the Aster flowering period into autumn when many other perennials have finished. Care focuses on promoting airflow and removing spent flowering stems to maintain a tidy plant. Place it where its August–October display can be easily seen from patios or paths.
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)
In the garden
Aster agertoides 'Ezo Murazaki' sits within the Aster genus and the Asteraceae family and produces its flowering display from August to October. That late-summer to autumn period is its defining calendar trait and is useful for extending interest into the cooler months when many other perennials are past their peak. Grow it with the same practical attention given to many asters: ensure good air circulation around the stems, lift out any weak or congested shoots, and remove spent flowerheads to keep the plant tidy and encourage sustained bloom into autumn. Light pruning after flowering will prevent the stand becoming untidy through winter. Monitor for common foliar issues and clear fallen debris to reduce disease risk. Where it fits best is determined by its flowering window — position Aster agertoides 'Ezo Murazaki' in borders, alongside late-season perennials, or beside seating and paths so the August–October flowers can be enjoyed up close. Grouping several plants together increases impact at a time of year when late blooms are valuable, and situating them where pollinators can access the flowers will make the most of the cultivar’s autumn display.
Growing conditions
Best soil and position for Aster
- Sunlight
- full sun, partial shade
- Soil type
- well-drained, loamy
- Soil pH
- neutral, slightly acidic
- Soil moisture
- moist
- Aspect
- south, east
- Exposure
- sheltered, exposed
- UK hardiness
- H5
Plant details
Aster agertoides 'Ezo Murazaki' size, habit and characteristics
- Plant type
- perennial
- Suggested uses
- borders, late-season color, cut flowers
- Native to
- Sichuan, Assam, Shikoku, Hubei, Korea, Russian Far East, Japan, Myanmar
Care notes
Pruning and caring for Aster agertoides 'Ezo Murazaki'
- Cultivation
- Prefers well-drained soil with regular watering; avoid waterlogging. Provide good air circulation to prevent mildew.
- Pruning
- Remove spent flowers to encourage further blooming; cut back in late winter or early spring.
- Propagation
- division, seed
Frequently asked questions
How do I grow Aster agertoides 'Ezo Murazaki'?
Prefers well-drained soil with regular watering; avoid waterlogging. Provide good air circulation to prevent mildew.
Where is the best place to plant Aster agertoides 'Ezo Murazaki'?
Aster agertoides 'Ezo Murazaki' prefers full sun and partial shade. It suits sheltered and exposed positions.
What soil does Aster agertoides 'Ezo Murazaki' need?
Aster agertoides 'Ezo Murazaki' grows best in well-drained and loamy soil. It prefers neutral and slightly acidic soil. Aim for soil that stays moist.
How do I prune Aster agertoides 'Ezo Murazaki'?
Remove spent flowers to encourage further blooming; cut back in late winter or early spring.
Is Aster agertoides 'Ezo Murazaki' hardy in the UK?
Aster agertoides 'Ezo Murazaki' has an RHS hardiness rating of H5, meaning it is hardy in most of the UK, tolerating -15 to -10°C.
How do I propagate Aster agertoides 'Ezo Murazaki'?
Division, seed.
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