Schoenoplectus lacustris
Lake bulrush
Common names: Common pond bulrush
At a glance
- Light
- Full sun
- Pot size
- from 80 l
- Lifespan
- Perennial
- Flowering
- Jun–Aug
- Hardiness
- Hardy
- Origin
- Native to Germany
Photo: CC BY-SA 3.0 · Source
This description was machine-translated.
Description
Lake bulrush (Schoenoplectus lacustris) is a native reed plant with round, dark‑green stems that can reach up to 2 m tall. It grows in the shallow to deep water zones of ponds, where it plays an important water‑cleansing role by absorbing nutrients. From June to August, inconspicuous brown spikelets appear on the sides of the stems, contributing more to the ecosystem than to ornamental appeal. Its dense, upright growth makes it an excellent natural screen along water edges and a refuge for dragonflies and amphibians. The plant spreads via rhizomes, forming dense stands over time.
Care instructions
Plant lake bulrush in pots with loamy substrate to prevent the rhizome from spreading unchecked throughout the pond. The ideal location is full sun, with a water depth of about 10 to 40 cm above the root ball. Cut the stems close to the ground in late autumn or early spring to allow fresh growth in spring. Lake bulrush is hardy and does not require winter protection as long as the root zone stays frost‑free beneath the water surface. Divide the root mass every few years if the stand becomes too dense or starts to grow out of the pot.
The care notes were machine-translated from German.
Garden year
FloweringJun–Aug
Soil & site
Soil pH
Soil type
moist, nutrient-rich, loamy, clayey
The common club-rush likes best to stand with its feet in the water, that is, in the shallow-water zone down to about 40 cm depth or in permanently soaked bank substrate. A loamy to clayey, nutrient-rich muddy soil suits it especially well. It tolerates lime-rich water without trouble, and a special soil replacement is rarely needed with pond plants.
Feeding
Light feeder
As a wild plant at the water's edge, the common club-rush draws its nutrients straight from the water and the bottom mud, so you do not need to feed it. If the pond becomes enriched with nutrients over the years, it often even grows too lushly. Lean to moderately nutrient-rich water is quite enough for it.
Overwintering
The common club-rush is hardy and comes through even hard frosts in the pond without trouble. In autumn the stems die back and can be cut back close to the base once they have turned brown. As long as the rootstock does not freeze solid, the plant reliably sprouts again in spring.
Propagation
Methods
- Division
- From seed
The easiest way is to divide the root ball with a sharp spade in spring and set the pieces straight into shallow water. This gives you strong new plants quickly and at the same time keeps the stand in check. Sowing works too, but takes much longer to produce a stately plant. It is best to plant in a planting basket, so that the rhizomes do not spread uncontrollably through the whole pond.
For your garden
Grow Lake bulrush yourself
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