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Amur Maple

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Nice little amur.

I've got two forest plantings of this species. One old, one only 15 years old. They are pretty tough customers.

Both of the forests were buried completely under snow until the beginning of March--I had intentionally provided no mulch for the winter to prevent early bud break--which has begun as early as Feb. 2 in the past. Both were simply put out on the ground in the backyard. At the height of the two blizzards this winter, the plantings had accumulated 5 1/2 feet of snow on top of them. Right before the snow set it, the trees were exposed to a row of low single digit nighttime temps. The snow, as it melted, pulled thumb diameter (and a little thicker) primary trees , completely to the ground in a tight "u" shaped arc. They didn't break--at least not completely--a couple lost their apex and one or two bigger branches. Both plantings are budding out profusely right now, as if the hard winter never happened.

I love the pic of this encased in ice.  How's it doing during the heat of summer?

Its doing pretty well.  I experimented with defoliating it, except for the sacrifice growing out the top.  I got new, smaller, prettier leaves like I'd hoped.  It just didn't fill in as fully as I'd have liked.  Also, it looks like growth has pretty much halted.  I haven't seen any extension on the sacrifice in a month or so.  Tridents and Japanese Maples right next to it, on the other hand, are growing wild.

I'll update with a picture soon.

Anyone else with amurs?  Care to commiserate or share notes?

John Kirby:
I have a couple of stumps that seem to do the same thing when we get really hot, but they have grown a bit in the fall when the temps drop....


Amurs are native to Northern China, Manchuria and Siberia I think. In other words, the species LOVES cooler weather. It is considered an invasive plant in the Northeast and Northern Midwest.

In hot southern summers, however, it slows considerably. I've had many of these for years here in Va. They always slow down their otherwise rampant growth in July and August. They also almost always devleop some kind of leaf spot because of the high humidity levels. This doesn't really affect them all that much, but can look bad.

I leave my Amurs out on the benches all winter with no shelter. They will begin growing in Feb if temps don't stay below 30 F. Makes repotting them a chore.


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