Moist, humus-rich soil is ideal. Tolerates heavier soils better than most perennials. Best with reliably consistent moisture; not suited to dry, free-draining sites.
Aspect
Full sun to part shade
Climate
Cool to temperate
Frost
Fully hardy
Water
Regular water is important — avoid letting the soil dry out, particularly over summer.
Fertiliser
A light application of balanced fertiliser in spring is ideal.
Flowering Time
Summer to autumn
After Flower Care
Cut back spent flower spikes to encourage further blooms. Cut to ground level in late autumn or winter as foliage dies back.
Notes
A vigorous grower well suited to naturalising, pond margins or bog gardens. Long-flowering and attractive to pollinators. Watch for slug and snail damage on emerging spring growth. Divide clumps every 3 years in spring.
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