Festuca glauca Elijah Blue Festuca glauca Elijah Blue is one of the best forms of the Blue Fescue with powdery blue grassy leaves and attractive panicles of silvery-blue flowers in early summer. Blue grasses don’t love it if we have one of our long, wet Irish winters and are best grown in a well-drained rock garden or raised bed. Excellent in Pots with very good drainage. Site: Salt & Wind TolerantPosition: Full sunSoil: Well drainedFlowering Period: Early SummerHardiness: HardySize: Height: 30cm (12"). Spread: 25cm (10")