Question about colchicums.

Jason_D_B(9a NE FL)May 21, 2012

Can colchicums grow and bloom successfully in zone 9? If not do I refigerate them like tulips? How many hours? Do they need to be cold when they bloom like tulips? Would it be easier to force them in fall and let them grow in winter when the temps are usually in the 20's to 30's at night?


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Are your summers dry enough?

    Bookmark   May 25, 2012 at 9:44AM
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vetivert8(NI-NZ zone 9a)

Yes - some of the species definitely grow in zone 9a or higher. They do better with excellent drainage and good sun otherwise the flowers fall over and look lanky.

You can leave them inground to multiply until they get overcrowded - then lift and thin out. It can take several years to reach this point.

Plant out in July on to November in fine grass, or under high deciduous trees, or in normal beds. No chilling required at all. Just get them in before they start flowering if possible. They'll flower out of the ground, with no soil at all.

They flower first. Die down. Then the leaves come up weeks later and last over winter before going dormant for summer.

    Bookmark   May 26, 2012 at 6:53AM
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Jason_D_B(9a NE FL)

our summers are dry to the extent that bulbous plants love it, that is untill a hurricane comes through (Theres a tropical depression only hours away)
Vetivert: thank you for the info! I'm going to buy them when they come in to the stores.

    Bookmark   May 27, 2012 at 7:28PM
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flora_uk(SW UK 8/9)

smivies - what makes you ask about dry summers? Have I missed something? Colchicums grow fine here and they certainly get plenty of rain all year round.

    Bookmark   May 28, 2012 at 1:34PM
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Sorry, they are wild in the United Kingdom? Here we have wildly growing C. autumnale. August, we are usually dry and warm month.
In my garden grow C. bizantinum , C. speciosum, C. sieboldii, which are found wild in the Mediterranean.
And because there is very dry and hot summer!

    Bookmark   June 1, 2012 at 4:06PM
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Colchicum autumnale is a plant of wet meadows in Central Europe.

    Bookmark   August 21, 2012 at 6:00PM
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flora_uk(SW UK 8/9)

Sorry I missed your question, Oleg. No, they are not native in the UK but are quite widely grown in gardens.

    Bookmark   August 22, 2012 at 5:08AM
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