Cortaderia selloana. This familiar ornamental grass takes three years to reach maturity from seed, but the end result is magnificent. A fountain of soft blue-grey foliage erupts from the centre of a massive clump. Above this, from late summer right into winter stand the distinctive, feathery panicles up to 3m (10') high. White Pampas Grass makes a bold statement wherever it is planted, and can be used as an architectural feature in garden design, anchoring or framing garden spaces. The inflorescences are fantastic as dry or fresh cut flowers.
Use 50 seeds per two foot diameter planting to create the dense clump look. Simply press the seeds lightly into moist soil indoors or direct sown. The seeds need light to germinate, so avoid covering them. The leaves of this fast-growing grass have sharp edges. White Pampas Grass is hardy to Zone 7, but can be overwintered in cooler zones by mulching over the roots in winter.
This massive perennial takes three years to reach full maturity, so make it part of a long term garden plan. Cortaderia is naturally heat tolerant, and its sharp leaves make it deer resistant. Continue reading below for tips on how to grow pampas grass from seed.
Season & Zone
Exposure: Full sun
Hardiness: White Pampas is hardy to Zone 7; Pink is hardy to Zone 8
Sow indoors 8-10 weeks before planting out. Or direct sow in early spring or early autumn. Expect germination in 10-14 days. Use 50 seeds per two foot diameter planting to create the dense clump look.
The seeds need light to germinate, so avoid covering them. Just press them into the soil.
Trim off dead leaves occasionally for a tidier look. Expect two to three years of growth before it flowers. Pampas grass can handle a wide range of growing conditions. It is drought tolerant and suitable for xeriscaping.