Japanese Blood Grass. An attractive grass with narrow, upright green leaves with vivid red tips in spring, developing to a deep blood-red by autumn. Height and Spread 45cm. Full sun. Hardy.
Imperata cylindrica ‘Rubra’ is a striking ornamental grass grown for its upright green foliage, which develops vivid red tips in spring before turning an intense blood-red by autumn, making it a superb feature in borders and contemporary gardens.
PLANTING and AFTERCARE GUIDE
Best Planting Time
Spring: Plant Imperata cylindrica ‘Rubra’ in spring when the soil is workable and beginning to warm, allowing roots to establish before active growth starts.
Early Autumn: Early autumn is also an excellent planting time, giving the root system time to settle before dormancy.
Site Selection
Sunlight: Imperata cylindrica ‘Rubra’ thrives in full sun, where its foliage develops the richest red colouring.
Soil: Fertile, well-drained soil is ideal. Improve the planting area with compost or well-rotted organic matter while ensuring good drainage.
Planting Instructions
Prepare the Hole: Dig a hole twice the width and the same depth as the root ball to give the roots plenty of room to establish.
Soil Preparation: Mix compost or organic matter into the excavated soil to improve fertility and soil structure.
Planting: Position Imperata cylindrica ‘Rubra’ with the top of the root ball level with the surrounding soil, then backfill gently and firm lightly.
Watering After Planting: Water thoroughly after planting to settle the soil and encourage strong root development.
Watering Requirements
Growing Season: Water regularly while the plant establishes, keeping the soil evenly moist but never waterlogged.
Established Plants: Once established, Imperata cylindrica ‘Rubra’ only requires occasional watering during extended dry spells.
Feeding
Spring: Apply a balanced fertiliser in early spring to encourage healthy foliage and vigorous growth.
Mid-Season: A light supplementary feed can help Imperata cylindrica ‘Rubra’ perform well in less fertile soils.
Pruning
Seasonal Care: Leave the colourful foliage in place through the colder months for added interest, then cut back old leaves in late winter or early spring before fresh growth emerges.
General Maintenance: Remove any damaged or untidy foliage as needed throughout the growing season.
Mulching
Spring: Apply a layer of organic mulch around the base to retain moisture, suppress weeds, and improve soil quality.
Later in the Year: Refresh the mulch when needed, ensuring it is kept away from the crown to maintain healthy growth.
Supporting the Plant
Natural Habit: Imperata cylindrica ‘Rubra’ has a naturally upright, compact habit and does not require staking or additional support.
Final Tips
Imperata cylindrica ‘Rubra’ is a hardy, low-maintenance ornamental grass that delivers spectacular seasonal colour and texture. With full sun, fertile well-drained soil, and simple care, Imperata cylindrica ‘Rubra’ will provide a dramatic display from spring through autumn.
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