Amsonia 'String Theory'
blue star
Compact and easy to grow, this low-maintenance perennial offers fine, thread-like foliage and pale blue, starry flowers that appear in...
9cm pot
£12.99
In stock (delivery within 3-4 working days)
3 × 9cm pots
£29.99
£10.00 each
In stock (delivery within 3-4 working days)
Order by midday Tuesday for delivery before the weekend
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Plant description
Compact and easy to grow, this low-maintenance perennial offers fine, thread-like foliage and pale blue, starry flowers that appear in late spring. Upright and densely clump-forming, it’s ideal for sunny borders or prairie-style planting schemes.
Amsonia 'String Theory' stays smaller than other types, with a tidy, bushy habit. The dark green summer foliage stays clean and healthy and turns a bold golden-orange in autumn, adding seasonal colour. It’s heat and humidity tolerant, copes with some drought once established, and is reliably deer resistant.
Useful for mixed borders, naturalistic planting or low-intervention spaces.
Amsonia 'String Theory' stays smaller than other types, with a tidy, bushy habit. The dark green summer foliage stays clean and healthy and turns a bold golden-orange in autumn, adding seasonal colour. It’s heat and humidity tolerant, copes with some drought once established, and is reliably deer resistant.
Useful for mixed borders, naturalistic planting or low-intervention spaces.
Eventual height & spread
Flowering period
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
Plant features
Position
Full sun
Rate of growth
Average
Soil
Moderately fertile, moist, well-drained soil
Hardiness
Fully hardy
How to care for Amsonia String Theory:
When planting Amsonia incorporate some well-rotted compost or manure and mycorrizal fungi into the planting hole. If the plants are starting to look floppy after they have flowered, they can be cut back to new basal foliage.
Alternatively, they can be given a lighter trim, cutting them back to form neat domes. Once established, lift and divide in spring or autumn.
Alternatively, they can be given a lighter trim, cutting them back to form neat domes. Once established, lift and divide in spring or autumn.
Please note:
This perennial dies back to below ground level each year in autumn, then fresh new growth appears again in spring.
