Hard Rush

Hard Rush (Juncus inflexus)

Hard Rush is a clump-forming rush with rigid, upright blue green cylindrical stems that deliver strong vertical texture in wet sites. It thrives at pond margins, in rain gardens, and anywhere consistently moist to wet soil is available.

Distinctive Features

Glaucous blue gray stems provide year-round structure and movement, while the plant tolerates standing water and heavy clay better than most ornamentals.

Growing Conditions

• Sun Exposure: Full sun to partial shade.
• Soil: Moist to wet, even saturated soils; tolerates heavy clay and shallow water.
• Water: Keep consistently moist to wet; do not allow prolonged dryness.
• USDA Hardiness Zones: 5 to 9.
• Mature Size: Typically 2 to 3 ft tall and 1.5 to 2.5 ft wide.

Ideal Uses

• Focal Point: Strong vertical stems anchor water garden edges and low swales.
• Rain Gardens: Handles periodic inundation and seasonal wetness.
• Pond Margins: Grows in shallow water and stabilizes banks.
• Containers: Suits large pots with consistently moist media.
• Erosion Control: Dense roots help bind soil in wet areas.

Low Maintenance Care

• Watering: Maintain steady moisture; increase frequency in heat or wind.
• Pruning: Shear or remove tired stems in late winter to refresh growth.
• Fertilizing: Feed lightly in spring if soils are poor; excess fertilizer is unnecessary.
• Mulching: Apply a thin organic mulch to conserve moisture, keeping mulch off crowns.
• Notes: Generally deer resistant; tolerates urban conditions and salt overspray.

Why Choose Hard Rush?

• Wet Site Solution: Thrives where many plants struggle with waterlogged soils.
• Year-Round Form: Evergreen to semi-evergreen stems provide lasting structure.
• Tough and Adaptable: Handles clay, fluctuating water, and heat with proper moisture.
• Design Impact: Clean vertical lines contrast with broad-leaved perennials and grasses.
• Wildlife Friendly: Dense clumps offer cover for beneficial insects and small fauna.

Site at pond edges or in rain gardens with reliable moisture, and cut back older stems in late winter to keep clumps tidy and vigorous.