How to Grow Caltha Plants in your Garden

Gardener's HQ Guide to Growing Cowslip, Kingcup, and Marsh Marigold

Caltha plants are hardy perennials that reach a maximum height of about 30 cm.

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.

Caltha Growing Guide and Facts

Common Names: Marsh Marigold, Cowslip, Kingcup.
Family: Ranunculaceae.
Life Cycle: Hardy perennial.
Height: 10 to 30 inches (25 to 75 cm).
Native: Wet and temperate regions of both hemispheres.

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 from between one to three months.

Once seedlings have grown in the peat pots they should be transplanted in the middle of summer, with a spacing of about 50 cm (20 inches).

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.

I hope that you enjoyed this guide on Caltha. You may also enjoy the following Gardener's HQ growing guides: How to grow Thalictrum and Pulsatilla plants.