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A. Flowering Characteristics
Muscari azureum flowers in medium spring (April/May)
for 3-4 weeks and plants are usually 6 inches
tall. Some selections are fragrant.
B. General Characteristics
1. Origin of species: Asia minor and Europe
2. Common names: Grape Hyacinth
3. Geophyte organ: Tunicated bulb
4. Hardiness type: Hardy III - Injured at temperatures
below 5 degrees F (-15C) when planted.
5. Natural reproductive systems and growth and
development requirements: Muscari reproduces by
offsets and requires a warm (65 to 75F) - cool
(28 to 32F) - warm (55 to 65F) annual thermoperiodic
cycle.
6. Primary uses: Borders, rock gardens, and woodland
gardens.
C. Cultural Information
1. Bulb sizes: 5/6, 6/up cm, in circumference.
2. Planting density: 0-1 inches apart, 30-60 per
sq. ft. Can be scattered in meadow areas and among
trees and shrubs.
3. Planting depth: 5 inches to base of the bulb.
4. Planting time: Fall
5. Perennialization habit: 1990 USDA Climatic
Zones 3 to 7 without mulch.
6. Light requirements: Full sunlight to PM or
AM only sunlight.
7. Moisture: Tolerates summer drought, but requires
moisture during growing season.
8. Animal susceptibility: Not normally susceptible.
D. Companion Plants:
Alyssum, Arabis, Centaurea dealbata, Coreopsis,
Dianthus, Digitalis, Forsythia, Gypsophila paniculata,
Hemerocallis (yellow cvs.), Iris (rhizomatous
white and yellow cvs.), Kniphofia (yellow cvs.),
Narcissus, Peonies (white and yellow cvs.), Yellow
tulip cultivars, Verbascum (white cvs.), Rhododendron
spp. (deciduous and evergreen), Cotoneaster, Berberis,
Acer palmatum, Deutzia gracilis, Weigela.
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