General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Perennial
Sun Requirements: Full Sun
Water Preferences: Dry Mesic
Soil pH Preferences: Slightly acid (6.1 – 6.5)
Minimum cold hardiness: Zone 5a -28.9 °C (-20 °F) to -26.1 °C (-15 °F)
Maximum recommended zone: Zone 8a
Plant Height: 4 inch
Plant Spread: 6 inch
Leaves: Deciduous
Spring ephemeral
Flowers: Showy
Other: Double-flowered
Flower Color: Lavender
Bloom Size: 1"-2"
Flower Time: Fall
Inflorescence Height: 4 inch
Foliage Mound Height: 2 inch
Underground structures: Corm
Suitable Locations: Xeriscapic
Uses: Will Naturalize
Resistances: Deer Resistant
Rabbit Resistant
Toxicity: Leaves are poisonous
Roots are poisonous
Other: Toxic if ingested
Propagation: Seeds: Stratify seeds: Soak seeds and warm stratification, then cool
Other info: Very difficult from seed Different species require different conditions.
Propagation: Other methods: Offsets
Pollinators: Various insects
Miscellaneous: Goes Dormant

Image
Common names
  • Autumn Crocus
  • False Autumn Crocus
  • Showy Colchicum
  • Naked Ladies
  • Meadow Saffron
  • Naked Boys

Comments:
  • Posted by CarolineScott (Calgary - Zone 4a) on Sep 12, 2017 7:50 AM concerning plant:
    While these are often called Fall crocus, they are actually NOT crocus , but members of the Lily family.
  • Posted by JRsbugs (Near Lincoln UK) on Dec 15, 2011 4:09 PM concerning plant:
    I planted three originally, they started to increase but I moved them to a better location when I replanted the bed they were in which was under a south facing wall, where I felt they weren't doing the best. The bed I moved them too became too crowded with other shrubs blocking out too much light and maybe taking too much water, they were growing leaves in spring but stopped flowering. I moved some once more, this time I had even more bulbs as they split making several bulbs. Moving is best done 'in the green', that is when they start to grow leaves in spring as they make flowers only in the autumn.

    The bed I put them in is on a slight slope, they are planted around the bottom end of the slope where they keep moist but also get some sun as well as shade. This seems to suit them! I have sandy, free draining soil, the bed had been mulched well with home made compost consisting of mainly leaves. I have never fed them and they continue to do well, they have proved to be very hardy in the UK but should be planted deep. Leaves die back for the summer.
  • Posted by dorab (Calgary - Zone 3a) on May 28, 2013 9:54 AM concerning plant:
    The leaves for colchicum come up in the spring and die back some time around June. Colchicum are marginally hardy here (zone 3a) so I mulch the plant in fall after the blooms have faded, if snow doesn't cover it first.
  • Posted by eclayne (Pioneer Valley south, MA, USA - Zone 6a) on Oct 4, 2012 2:00 PM concerning plant:
    Per the RHS:
    A cross of C. autumnale 'Alboplenum' × C. speciosum 'Album'

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