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overwintering trident maple

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Old 3-Dec-2001   #1
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overwintering trident maple

Could someone offer some advice on overwintering trident maples?
Greatly appreciated!
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Old 3-Dec-2001   #2
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Re: overwintering trident maple

Welcome, Randy

It really depends on your growing environment. Personally, I don't do anything special. They stay right on the benches, but for others in cooler climates, more protection is needed.

If you're in the US, you can use this link to find out what USDA zone you are in and I'm sure someone in that same region can give you some more specific advice.

http://www.usna.usda.gov/Hardzone/ushzmap.html?

the full instructions are here

http://www.usna.usda.gov/Hardzone/

Regards,

Matt
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Old 4-Dec-2001   #3
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Re: overwintering trident maple

:I'm sorry, I meant to specify a zone.I'm in zone 7.
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Old 4-Dec-2001   #4
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Re: overwintering trident maple

In a typical winter, you'd be fine without taking any extreme measures for your maples. You have about 1 zone safety margin . Every once in a while there is pretty abnormal winter. When this happens, the trees go into the garage or an unheated greenhouse until the ice in the birdbath melts.

Keep in mind that there are microclimates in any area, and keeping the trees out of the wind and on the ground will often keep them warmer than if they are sitting up high on benches.

Here are the Indicator plants USDA lists for your zone and one zonre cooler. Bonsai aren't quite as resilient as landscape plants because of their smaller size and the fact that they aren't established in the ground. But they are portable!

Zone 6
-10 to 0 F
-23.3 to -17.8 C

Acer palmatum (Japanese maple)
Buxus sempervirens (Common boxwood)
Euonymus follunei (Winter creeper)
Hedera helix (English ivy)
Ilex opaca (American holly)
Ligustrum ovalifolium (California privet)



Zone 7
0 to 10 F
-17.8 to -12.3 C

Acer macrophylium (Bigleaf maple)
Rhododendron Kurume hybrids (Kurume azalea)
Cedrus atlantica (Atlas cedar)
Cotoneaster microphylla (Small-leaf cotoneaster)
Ilex aquifolium (English holly)
Taxus baccata (English yew)
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Old 4-Dec-2001   #5
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Re: overwintering trident maple

Yes,that is alot of help.One more question.Should I go to lengths to protect them from frost even tho they are dormant?
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Old 4-Dec-2001   #6
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Re: overwintering trident maple

In my experience, frost is no problem with japanese and trident maples. Hard freezes that completely freeze the rootball are a different story. If you tap the soil and it thunks like it's a solid block... I would take it in the garage to thaw out and not leave the plant in that condition for several days on end.

If the tree is very old with delicate ramification, you can lose some twigs to die back as a result of weather. Parts of the tree would eventually die anyway, it just a stress, like frostbite, and it attacks the weakest parts of the tree first. This seems to be a problem with zelkova and elm that have extremely fine twigging.

For other plants, if they become dessicated and the roots are unable to take up moisture because the soil is frozen, the tree will lose some of its ability to resist having its tissues freeze. So keeping the tree hydrated is important, too.

Regards,

Matt
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