PL. —Muscari armeniacumBotanical illustration — drop image
Peak bloom windowZone 6b · frost-offset weeks
Winter
Not in bloom
Spring
Peak bloom
Summer
Not in bloom
Fall
Not in bloom
Peak bloom
In bloom
Background
Grape Hyacinth is named for its tiny clustered flowers that resemble a bunch of grapes — delicate blue orbs on short stems that appear in spring. Hardy to zone 2, it naturalizes freely in lawns, rock gardens, and borders, forming expanding drifts over years. Plant bulbs in fall when soil cools, through the season until the ground freezes; earlier planting is best. They thrive in average soil and tolerate partial shade.
Once planted, they ask little: no supplemental watering in summer, leave the foliage to die back naturally to recharge the bulbs, and divide only if overcrowded every few years. They work beautifully as filler in spring arrangements and are long-lasting when cut.
Care guide
SunFull sun to partial shade
WaterLow once established
SoilAverage, well-draining
Spacing10 per square foot (roughly 3–4 inches apart)
Height4–8 inches
Zone2a – 9b
WinterHardy bulb — leave in ground year-round.
Frost hardy
spring
watchAllow foliage to die back naturally to feed next year's bulbs
summer
sowPlant bulbs in fall when soil cools, through season until ground freezes; 3 inches deep, roughly 10 per square foot
watchDivide congested clumps every 3–4 years in summer when foliage has yellowed