Centaury

Plant family

Korbblütler (Asteraceae) (Asteraceae)

Synonyms

Centory, Starthistles, Knapweeds, Bluets, Loggerheads

Season Overview

Details

Light requirement

Sunny

Water requirement

Wet

Soil

Medium (loamy)

Nutrient requirement

Medium

Light germinator

Seeding distance

20 cm

Row spacing

20 cm

Seeding depth

1 cm

Instructions

Description

Knapweed belongs to the daisy family (Asteraceae). There are about 500 species. They are annual, biennial or often perennial perennials or plants that grow between 20-300 cm tall and form rhizomes. They bloom in white, yellow, pink, purple or blue. A well-known knapweed is the cornflower. Insect friendly.

Growing tips

Germination after 14-21 days at 15-20°C. Direct sowing possible. Remove withered regularly. Fertilize 2 times a month. The soil should not be too dry. Blooms until the 1st frost. Rejuvenate by division after a few years. Some plants self-seed. Planting distances, sowing depth and location requirements are species and variety dependent.