Guide to growing garden plants - Caltha (Cowslip)
Caltha plants are hardy perennials that reach a maximum height of about 30cm.
They are also known as Cowslip or Marsh Marigold.
They have buttercup like flowers of yellow, pink or white and flower in the spring time.
How to grow Cowslip (Caltha)
Caltha should be grown outdoors in peat pots from fresh seed in the summer. The seed of cowslip should be lightly covered and germination will take anywhere between one and three months. Once seedlings have grown in the peat pots they should be transplanted in the middle of summer with a spacing of about 50cm. As they prefer sun and shade at different times of the growing season, it is probably best to grow them in areas of partial shade. They prefer a moist to wet clay soil of pH 5 to 7.
Caring for Cowslip - Caltha
It is important to keep the soil where Caltha grows very moist throughout the year.