Cottongrass: how to grow cotton?

Linseed (Eriophorum angustifolium, Scirpus angustifolius) is an amazing aquatic plant. Indeed, its fruits are lined with small silver tufts that look like fluffy silk. It is a plant found at the edge of waterways, in marshes or bogs. It is also called cotton rush because of the twisting and light tufts it produces cotton fibers. Discover all our cottongrass growing tips.

1) Where and when to grow cottongrass?

This plant, found near water points, requires a acid earth. The soil also does not need to be specially drained since it needs water-retaining soil.

The ideal time to plant cotton is in spring (March April). It is also possible to plant in autumn between September and November, it is up to you.

To ensure good growth and development of the plant, choose a place well sunny.

Credits: VSFP / iStock

2) How to plant cottongrass?

Planting density is rather low: approx 5 plants per m² are quite sufficient. Indeed, like most aquatic plants, cotton rhizomes spread very easily and quickly. Be careful not to lose control! One trick is to plant cottongrass in a pot and then bury it in the ground. Thus, there is no risk of spread.

3) Maintaining the cotton swab

The advantage of the cotton swab is that it does not require any maintenance. To multiply it, it is enough to practice a division. For this, after digging part of the foot, cut rhizomes and transplant the young plants.

Being an aquatic plant, it is possible to place cottongrass in a basin or pond as long as the water does not exceed 5 cm, or even 10 cm, but temporarily.

Cottongrass is not susceptible to garden diseases or pests and vermin.