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10-Nov-2003
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#1 |
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The Lawn Man
Join Date: Jul-2003
Location: Florida
Country: usa
Posts: 96
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Cold Frames
Im just curious what people are doing for the winter time. Im thinking about building a small green house out of pvc for my trees. I know it does not get as cold here in Florida as it does other places. I have too many trees to bring inside on the frost nights. Any ideas?
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Cold Frames |
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11-Nov-2003
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#2 |
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Perpetual Novice
 
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You might consider Lee Valley Tools.
They have a folding cold frame for about $40 which is tons better than anything you could build for the price. A Google search on Lee Valley should find them. |
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13-Nov-2003
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#3 |
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bonsaiTALK Master Craftsman
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..when I lived mid state Fl , I used my tall benches as make shift cold frames for cold and frost .. by placing plastic over entire bench.. and the plants on the ground .. I was able to leave them there during the til the cold front had gone .. opening an area of plastic for ventilation. This was ok but a more permanet solution and the ability to heat would have been a good thing .. a greenhouse structure will require good ventilation and air circulation.
How much space do you need?
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peace, tom stoute http://bonsaiinsights.spaces.live.com/ |
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22-Nov-2003
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#4 |
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Old Mister Crow
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Since it doesn't get too terribly cold here in Seattle, today I built a little make-shift cold frame between my garage and my neighbor's fence. I've got corregated translucent plastic for the roof, plain old wooden sides, and an old shower curtain door-flap for extra insulation (and colorful cheer
 ). Because I don't want the pots sitting directly on bare earth, I've used plastic shelving on the ground in most places and two-by-fours laid along the ground elsewhere. I'll let you know how well it works, come spring. Best regards, Carl
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In love with trees |
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22-Nov-2003
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#5 |
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Old Mister Crow
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In love with trees Last edited by Carl Bergstrom : 22-Nov-2003 at 06:07 PM. |
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22-Nov-2003
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#6 |
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Old Mister Crow
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..
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In love with trees |
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23-Nov-2003
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#7 |
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Tips:5¢ Advice:Free
 
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I like the tropical print curtains, Carl. Do you have matching pyjamas?
We also have an arctic chill in Silicon Valley this week. I guess it must be passing down through Seattle, too, Carl? The average temperature dropped 20 degrees. I moved several trees into our unheated 6x8 greenhouse: Podocarpus macrophylla (Buddhist Pine) Donkeytail plant Bougainvillea Serissa Ume (an old one which doesn't seem to tolerate cold much) Camellia Geranium Some mysterious tropical looking thing. There is a nice plant hardiness list here: http://www.usna.usda.gov/Hardzone/hrdzon5.html Keep in mind that the differences in container vs. landscape plants will reduce cold hardiness so keep a zone or two buffer.
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23-Nov-2003
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#8 |
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Bitten By The Bonsai Bug!
Join Date: Nov-2002
Location: San Jose, California
Country: USA
USDA Zone: 9
AHS Heat Zone: 4/5
Posts: 534
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If you don't have a greenhouse or cold frame and lack major funds at this time of year, what can you do in an emergency. I live in Matt's zone? I moved my trees closer to the house and I covered my trees with a light sheet at nite? Is this bad? I don't have a usable garage either!
I didn't loose any last year but I don't think we had too many very cold nights. I did wrap the pots in a foam sheet though. Lesley 
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Ladybug |
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23-Nov-2003
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#9 |
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Trunk Collector
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Leslie,
In zone 9 a light cover on the few nights when temps dip below freezing should work fine. Usually, just moving tender plants under the eves close to the house will do. Brian
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There's a difference between taking your art seriously, and taking yourself too seriously. |
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23-Nov-2003
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#10 |
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bonsaiTALK Craftsman
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Leslie,
Your idea should work well in zone 9. I live in zone 5 and have found that an emergency ( or even semi-permanent) cold frame can be constructed by making a 'box' out of bales of straw. Find a flat spot on you lawn, make the box, cover the bottom of the box with landscape fabric or plastic, put your trees in and then cover them to the rim of the pot with mulch. A sheet of plexi glass works very well as a lid. You will need to watch the temperature in the box and prop the lid open when it gets too warm. You can modify this arrangement any way you wish to suit your needs and climate. A member of another forum has succesfully over wintered Serissa in zone 7 using this technique, and most of us know how beligerent Serissa can be. I finally got the hang of it, but am a former member of the "I Hate Seissa Club"! Good luck. TJ |
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