Ornamental grasses can be grouped into cool- or warm-season types, depending on when they do most of their growing.
Cool-season grasses: Like cool season lawn grasses, these ornamental grasses do most of their growing in spring when temperatures are cool and moisture is plentiful.
Cool season ornamental grasses such as blue fescue (Festuca species and cultivars) and feather reed grass (Calamagrostis species and cultivars), grow best at temperatures from above freezing to 75°F (24°C).
They start into new growth earlier in spring and tend to flower early, stop growth in the heat of summer, and resume when temperatures cool in early fall.
Warm season grasses: Warm-season grasses like maiden grass Miscanthus species and fountain grass (Pennisetum species and cultivars) require patience. They're slow to get growing, but thrive in temperatures from 75° to 85°F (24 to 30C°). Most come into flower in late summer or early fall.
The best way to deal with their spring tardiness is to surround them with tulips or daffodils for spring color before they get growing. Then as the grasses start to grow, they do a nice job of camouflaging the bulb foliage as it dies back.
Cool-season grasses: Like cool season lawn grasses, these ornamental grasses do most of their growing in spring when temperatures are cool and moisture is plentiful.
Cool season ornamental grasses such as blue fescue (Festuca species and cultivars) and feather reed grass (Calamagrostis species and cultivars), grow best at temperatures from above freezing to 75°F (24°C).
They start into new growth earlier in spring and tend to flower early, stop growth in the heat of summer, and resume when temperatures cool in early fall.
Warm season grasses: Warm-season grasses like maiden grass Miscanthus species and fountain grass (Pennisetum species and cultivars) require patience. They're slow to get growing, but thrive in temperatures from 75° to 85°F (24 to 30C°). Most come into flower in late summer or early fall.
The best way to deal with their spring tardiness is to surround them with tulips or daffodils for spring color before they get growing. Then as the grasses start to grow, they do a nice job of camouflaging the bulb foliage as it dies back.
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