| Calamagrostis brachytricha. Not variegated, 4' to foliage, 5' to blooms. Cool season. Hardy to Z4. Calamagrostis x acutiflora 'Karl Foerster.' Not variegated, very erect. 4' to foliage, 5'+ to blooms. Cool season. Hardy to Z3. Calamagrostis x acutiflora 'Avalanche.' Variegated, very erect. 40" to foliage, 52" to blooms. Cool season. Hardy to Z3. Carex pendula. Non-variegated. 4' to foliage, 5' to blooms. Cool season, Hardy to Z5. Elymus cinereus. Non-variegated. 40" to foliage, 60" to plumes. Cool season. Hardy to Z3. Those are the tallest cool season grasses I know. |