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A. Flowering Characteristics
Colchicum flowers in late summer (August) and
are 6-8 inches tall.
B. General Characteristics
1. Origin of species: Asia Minor and Europe
2. Common names: Fall Crocuses, Wonder Bulb, Mysteria
3. Geophyte organ: Corm
4. Hardiness type: Hardy II - Injured at temperatures
below 14 degrees F (-10C) when planted.
5. Natural reproductive systems and growth and
development requirements: Reproduces by offsets
and requires a warm (60 to 70F) - cool (32 to
40F) - warm (60 to 70F) annual thermoperiodic
cycle.
6. Primary uses: Beds, meadows, and woodland gardens.
C. Cultural Information
1. Bulb sizes: 13/up for most cultivars, some
are larger.
2. Planting density: 1-2 inches apart, 10 per
sq. ft.
3. Planting depth: 5 inches to base of corm.
4. Planting time: Summer
5. Perennialization habit: 1990 USDA Climatic
Zone 4 with mulch, Zones 5 to 9 without mulch.
6. Light requirements: Full sunlight to PM or
AM only sunlight.
7. Moisture: Tolerates summer drought.
8. Animal susceptibility: Not reported.
D. Companion Plants:
Coreopsis, Dendranthema, Hemerocallis (yellow
cvs.), Kniphofia (yellow cvs.), Peonies (white
and yellow cvs.), Rudbeckia, Salvia, Sedum, Verbascum
(white cvs.), Buddleia, Hibiscus syriacus, Acer
palmatum, Lagerstroemia.
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