Koromiko

How to grow Koromiko

Written by the GardenDecoded editorial team · Last reviewed 21 July 2026 · Written for UK gardens · How we research our guidance

Planting

Plant in spring so the roots are established before winter. It takes salt wind well and is a good informal hedge or windbreak in coastal gardens. Avoid heavy soil that stays wet over winter, which is what usually kills it rather than cold alone.

Pruning

Trim lightly after flowering to keep the shape tight. It will break from older wood better than lavender, but hard renovation is still a gamble on an old plant.

Propagation

Semi-ripe cuttings in late summer root readily in a gritty compost. This is much more reliable than seed, which gives variable plants.

Pests and diseases

Generally trouble-free. Leaf spot can disfigure foliage in wet seasons on plants in stagnant air; improving airflow usually settles it.

Value to wildlife

The long white racemes are worked heavily by bees and hoverflies at a useful point in late summer.

Notes

Inland gardens on cold clay will find this short-lived. Treat it as a plant to replace every eight to ten years rather than a permanent structure.

This guidance was researched and written by GardenDecoded — see our editorial policy for how guides are checked and reviewed.

Other names for this plant

These names have all been used for Veronica salicifolia but are no longer the accepted name. You may still meet them on old labels, in books, or in nursery catalogues.

Others in Veronica