Gadenin日本語Get the appSite: sun, air and drainage
Grow crimson clover in full sun. In shade it stretches, flops and flowers poorly. It is not fussy about soil, but it dislikes standing water, especially through a wet winter, when soggy ground leads to crown rot. A free-draining bed, a raised bed or a container with a good potting mix all suit it.
Airflow matters as much as sun. Plants packed tightly together stay damp after rain and are more prone to mildew and rot. Spacing plants 8 to 12 inches (20 to 30 cm) apart for a flower display keeps air moving between them.
- Pick the sunniest spot Choose a bed or container that gets sun for most of the day.
- Check the drainage If water lingers on the surface after rain, raise the bed or work in coarse organic matter before sowing.
- Give each plant room Thin or plant at 8 to 12 inches (20 to 30 cm) apart so the clumps do not knit into a damp mass.
Watering: let it dry between drinks
Keep the soil evenly moist while seedlings are establishing. Once plants are growing strongly, let the surface dry between waterings and then water thoroughly. In the ground in a mild, wet winter you will rarely need to water at all; in containers, check by feel and water when the top of the mix is dry.
Overwatering is a bigger risk than drought for established plants. Constantly wet soil around the crown is the main cause of rot, so water at the base in the morning and avoid soaking the foliage late in the day.
Feeding: little or none
Crimson clover fixes its own nitrogen through the nodules on its roots, so it needs little or no fertilizer. Rich feeding produces soft, leafy growth that is more prone to flopping and disease, with no gain in flowers.
The one exception is a plant whose lower leaves turn pale and yellow while it is actively growing, particularly in containers where the mix has been watered heavily. A dilute liquid feed at that point is enough. Do not feed routinely.
| Situation | What to do |
|---|---|
| Plants green and growing well | No fertilizer |
| Lower leaves yellowing while growing actively | One dilute liquid feed, then watch |
| Lush leaves but few flowers | Stop any feeding; check sun and spacing |
Winter care
In mild areas the plants sit through winter as low clumps and need little attention. Young seedlings appreciate light frost protection, such as row cover or a cloche, on the coldest nights. Keep containers out of spots where water collects, and avoid watering in cold, wet spells.
Weeding and support
Keep the bed weeded while the clover is small; once the clumps fill out they shade out many weeds themselves. Plants grown in full sun at the right spacing rarely need staking. If they lean after heavy rain, the usual causes are too much shade, too much fertilizer or crowding.