Blue fescue Botanical name: Festuca glauca Requirements: Well-drained soil and full sun.Bird benefits: Seeds feed them; foliage provides nesting material Gardener benefits: Mound-forming, semievergreen plants have striking blue-green foliage, making them valuable accent plants. Drought-tolerant plants are a good choice for low-water landscapes. Zones: 4-8 Size: 6-18 inches tall; 12-24 inches wide