An upright, clump-forming perennial grass with blue-green foliage and tall stems carrying bronze tinted flowers with yellow anthers. Golden, orange-yellow foliage in autumn. Height 1.5m. Spread 50cm. Flowers July to September. Full sun. Hardy.
Sorghastrum nutans ‘Indian Steel’ is a striking ornamental grass known for its upright growth habit, blue-green foliage, and bronze-tinged flowers with golden anthers. As the seasons change, its foliage transforms into a brilliant golden-orange, adding year-round interest to gardens. Growing up to 1.5 meters tall, Sorghastrum nutans ‘Indian Steel’ is perfect for borders, prairie-style plantings, and wildlife-friendly landscapes.
PLANTING and AFTERCARE GUIDE
Best Planting Time
Spring: The best time to plant Sorghastrum nutans ‘Indian Steel’ is in spring when the soil starts warming up. This ensures that roots establish well before the growing season.
Autumn: Alternatively, planting in early autumn allows the roots to develop before dormancy, leading to stronger growth in spring.
Site Selection
Sunlight: Sorghastrum nutans ‘Indian Steel’ thrives in full sun. A minimum of six hours of direct sunlight daily will promote the best foliage colour and flowering.
Soil: Well-drained soil is essential for Sorghastrum nutans ‘Indian Steel’. It tolerates a variety of soil types, including sandy and loamy soils, but does not perform well in waterlogged conditions.
Planting Instructions
Prepare the Hole: Dig a hole twice the width and the same depth as the root ball to provide ample space for root growth.
Soil Preparation: Mix in organic matter such as compost to improve soil fertility and drainage.
Planting: Place the plant in the hole, ensuring the top of the root ball is level with the surrounding soil. Backfill gently and firm the soil to eliminate air pockets.
Watering After Planting: Water thoroughly after planting to help the soil settle and encourage root establishment.
Watering Requirements
Growing Season: Once established, Sorghastrum nutans ‘Indian Steel’ is drought-tolerant and requires minimal watering. Water deeply during extended dry periods.
Dormant Season: Reduce watering in autumn and winter, as excessive moisture can lead to root rot.
Feeding
Spring: Apply a general-purpose fertiliser in early spring to encourage healthy new growth.
Mid-Summer: A light application of fertiliser can support vigorous foliage and flower development.
Pruning
Winter Cutback: Leave the foliage in place over winter for visual interest and wildlife benefits. In late winter or early spring, cut back Sorghastrum nutans ‘Indian Steel’ to ground level to promote fresh new growth.
Mulching
Spring: Apply a layer of mulch around the base of the plant to retain moisture, suppress weeds, and regulate soil temperature.
Winter: Mulching in winter provides additional protection to the roots from extreme cold and frost.
Supporting the Plant
Staking: Sorghastrum nutans ‘Indian Steel’ has sturdy stems and generally does not require staking. However, in very exposed areas, light support may be beneficial.
Final Tips
Sorghastrum nutans ‘Indian Steel’ is a low-maintenance, ornamental grass that adds texture and movement to any garden. Its changing seasonal colours and adaptability make it an excellent choice for prairie gardens, mixed borders, and wildlife-friendly landscapes. By planting in full sun with well-drained soil and following this care guide, Sorghastrum will thrive, providing beauty and structure to your outdoor space year after year.
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