Porcupine Ornamental Grass – Miscanthus Sinesis ‘Strictus’

Description

Miscanthus sinensis ‘Strictus’, commonly known as Porcupine Grass, is a distinctive ornamental grass prized for its bold, upright habit and striking variegation. The slender green leaves display horizontal bands of bright golden-yellow, creating a dramatic architectural effect. In late summer, tall flower stems rise above the foliage, bearing bronze-red plumes that fade to soft silver tones, remaining decorative into winter.

Growth & Habit

This robust, clump-forming perennial typically reaches 1.8–2.4 m in height when in flower and around 1.2 m in spread. Its strong vertical growth and variegated leaves make it an excellent focal point in large borders, contemporary plantings, or naturalistic landscapes. Non-invasive and long-lived, it develops into a well-defined clump over time.

Conditions

• Position: Full sun for best colour and form
• Soil: Moist but well-drained; tolerates a range of soil types
• Aspect: Prefers open sites with good light and air circulation
• Hardiness: Fully hardy across the UK (H7)

Seasonal Interest

Foliage emerges in spring with distinctive yellow banding and reaches full height by mid-summer. Flower plumes appear from August to October, adding warm tones that complement late-season perennials. The stems and seed heads persist into winter, giving structure and movement to dormant borders.

Maintenance

Cut back dead foliage and flower stems in late winter or early spring before new growth begins. Remove old material at the base to encourage vigorous regrowth. Divide mature clumps every few years to maintain health and prevent congestion.

Note: ‘Strictus’ is closely related to *Miscanthus sinensis* ‘Zebrinus’ but has a more upright habit and sharper leaf variegation, making it particularly effective for vertical emphasis in planting designs.