Seed preparation
The seed is tiny and black, dust-like. Mix it with dry fine sand to sow evenly. Seed of this rush is very long-lived: the University of Washington data sheet gives a seed life of up to 60 years.
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Herb growing guide
Common or soft rush is a tough, clump-forming perennial for pond margins, bog gardens and rain gardens. Its tiny seed must be sown on the surface in light and kept wet and warm.
The seed is tiny and black, dust-like. Mix it with dry fine sand to sow evenly. Seed of this rush is very long-lived: the University of Washington data sheet gives a seed life of up to 60 years.
Not needed.
Not needed according to the USDA plant guide; warmth, light and constant moisture trigger germination.
Optional. Soaking the seed in water for 1 to 7 days shortens the time to sprouting. Sow the wet seed straight onto the tray surface.
Heat speeds germination: the USDA guide keeps the greenhouse at 32-38 °C (90-100 °F). In hot Indian summers outdoor trays usually stay warm enough; in cool climates use a heated propagator or sow in late spring.
Place seed on the surface and press it lightly into contact with the mix. Do not cover it; buried seed stays dormant.
A fine, moisture-holding seed mix. In the garden the rush prefers wet, slightly acidic soil of medium fertility.
Keep the surface constantly moist; seedlings cannot survive long without water. Stand the tray in a shallow saucer of water rather than watering from above, which washes seed away.
Germination needs light, so keep trays in a bright place; full sun suits seedlings once they are up.
First seedlings appear in about 1 week under warm, wet conditions.
Seedlings grow slowly: the USDA guide reports plugs ready in 100-120 days. Plant them 25-30 cm (10-12 in) apart into moist soil, where they fill in within one growing season. Plant at the start of a wet season so roots establish in saturated soil.
Keep newly planted plugs saturated. Let roots establish before the site is flooded; established clumps tolerate 2.5-8 cm (1-3 in) of standing water when levels rise and fall over the season.
Pond edges, ditches, bog gardens and rain gardens in sun or part shade suit it best; in containers it needs regular watering.
Once you have a clump, divide it in spring for quick new plants.
The tall green stems are used fresh in arrangements and dried for weaving; cut them as needed through the season.
Mature clumps tolerate both drought spells and total flooding, so they need little care once established.
Sow common rush on the surface of a wet, warm tray for sturdy clumps around ponds and bog gardens.
No. The seed needs light, moisture and heat to germinate, so press it onto the surface and keep it wet.
Established plants tolerate 2.5-8 cm (1-3 in) of fluctuating standing water and even short total flooding. Let young plugs root into wet soil first.
Yes. Use a pot without drainage holes or stand it in a saucer of water so the mix never dries out.
