How to plant knautias

Over the summer months, knautias will produce masses of pincushion-like flowers held above slender stems. Ideal for the herbaceous border and particularly suited to the cottage, prairie or wild garden, these striking hardy perennial plants will provide a much needed source of nectar to pollinating insects. Try mixing them with silver grasses, astrantias, lavanders, salvias or scabiosas.

Plant knautias in moderately fertile, well-drained, alkaline soil in full sun. Feed with high potash feed every couple of weeks: if you garden organically, liquid seaweed is ideal as it is organic and comes from a sustainable source. Dead-head regularly to encourage more flowers.

Always unpack on arrival and store in a cool place until ready to plant.

Potential problems, pests and diseases:

Generally, knautias do not suffer from any serious diseases. However, they can be affected by aphids that will feed on their sap, weakening the plants and potentially spreading viruses and diseases.