Corydalis calycosa
corydalis
This mound-forming perennial is known for its striking, true blue and purple-hued flowers with a white throat, which are sweetly...
3 × 9cm pots
£27.99
£9.33 each
available to order from autumn
9cm pot
£11.99
available to order from autumn
1
Plant description
This mound-forming perennial is known for its striking, true blue and purple-hued flowers with a white throat, which are sweetly scented and appear in dense racemes during summer. The fern-like, deeply cut bright-green foliage adds an attractive, bushy texture to the plant, making Corydalis calycosa a standout in shaded borders or woodland gardens.
Eventual height & spread
Flowering period
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
Plant features
Position
Light shade
Rate of growth
Average
Soil
Moderately fertile, moist, well-drained soil
Hardiness
Fully hardy
How to care for Corydalis calycosa:
Select a cool, partially shaded location with well-draining, humus-rich soil. Plant in early spring or autumn, spacing 15-30cm (6-12in) apart. Maintain consistent moisture, especially during the spring growing season, and apply a 5-7cm (2-3in) layer of organic mulch to retain moisture and keep roots cool. Feed with a balanced, slow-release fertiliser in early spring.
Many Corydalis species enter dormancy during hot, dry summers, so reduce watering but don't let roots dry out completely. In autumn, cut back stems to near ground level, doing so earlier if self-seeding is a concern. Monitor for slug and snail damage, especially on young growth.
Many Corydalis species enter dormancy during hot, dry summers, so reduce watering but don't let roots dry out completely. In autumn, cut back stems to near ground level, doing so earlier if self-seeding is a concern. Monitor for slug and snail damage, especially on young growth.
Please note:
This perennial dies back to below ground level each year in autumn, then fresh new growth appears again in spring.
