Blue Hill
Salvia × sylvestris 'Blauhügel'
Blue Hill blooms from May through August.
Everything this page states about the plant was checked against named botanical sources, the bloom months and the water need among them, with what the sources could not settle written down.
Growing Blue Hill
Plant it in full sun. It prefers low water. It is hardy in USDA zones 4–8. Expect it to reach about 1.5 ft tall and 1.3 ft wide at maturity, in roughly 2 years.
When to plant Blue Hill
Plant Blue Hill in early spring as soon as the soil is workable, or in early fall at least six weeks before your first frost, so roots establish in cool weather. For the middle of its hardy zones 4 to 8 range, spring means March to May and fall means August or September. Once settled, it blooms from May to August.
Month-by-month timing for your zone is on the planting calendar: for the middle of its range, start with zone 6 in March.
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