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30-Jan-2005
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#1 |
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Old at heart
 
Join Date: Jun-2003
Location: Calgary
Country: Canada
USDA Zone: Zone 3
AHS Heat Zone: 3-4
Posts: 312
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Dormancy and transitions
Greetings folks,
I have a few questions regarding winter dormancy for sub-tropical species (like olives, Sageretia, Pyracantha, Pomegranates, and Myrtles in particular). I have an ideal cold room that sits at 10°-15°C (50°-60°F) during winter but I’d like to extend the growing season (Calgary’s growing season is an irritatingly short four months). I’d like to move them into an indoor growing area before spring thaw, also, it’s not unknown to have hard frosts and snow in October, so it might be (and probably will be), necessary to bring them indoors before they’re ready. What I’d like to know is what a tree can stand as far as transitions go. Can I move a tree from dormancy to summer conditions in one step, without causing harm? Can a tree that’s not actively growing, but in full leaf be moved directly into a cold room for winter storage? Also, dose anyone know, or know where I can find out the dormancy requirements of subtropical trees, in particular the ideal amount of time that fulfills their minimum dormancy need? Thanks all and happy growing, Cody Oliver |
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Dormancy and transitions |
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30-Jan-2005
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#2 |
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bonsaiTALK Master Craftsman
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Cody.
I have only been growing for three growing seasons so you can take my advise or leave it. I leave my sub-tropicals outside till the first snow or untill the leaves of my chinese elms go brown. Leave out as long as you can, if the temps will be too low overnight take into a shed or your winter room. I usually bring inside around Nov or Dec and then treat them like tropicals (inside under flourescents). I have done this with barbadoes cherry, kingsivlle boxwood, brush cherry, chinese elms and an azalia (the azalia got mites, did not get caught and died). Newt |
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30-Jan-2005
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#3 |
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Bonsai hobbyist
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Well, I have a sageretia that Ive kept in one place since I've had it. It likes humidity so it sits on the kitchen windowsill where its bright and humid. Its quite cold in there too at times, yet it keeps growing, doesnt need a dormant period.(I thought only deciduos temperate trees required a dormancy period)
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Today is or was yesterday's tomorrow |
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31-Jan-2005
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#4 | |
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Old at heart
Join Date: Jun-2003
Location: Calgary
Country: Canada
USDA Zone: Zone 3
AHS Heat Zone: 3-4
Posts: 312
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Quote:
I agree that that is one way of doing it, but my main problem is how to move trees between different states in an artificial environment. Most books I’ve read indicate that subtropical species benefit from a period of rest at lowered temperatures, but don’t go into much detail about actual dormancy requirements or methods to moving plants from winter to summer conditions, or vice versa. Maybe this isn’t as hard as I’m making it out to be? Peace & Bonsai -Cody Oliver |
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