Autumn Blaze Maple planting

misslexiMay 26, 2007

Hi, I'm about to plant 30 or so ABM trees that are already 12' tall, including root structure.

Three questions at this time:

1. These are in buckets roughly 16" wide and 13" deep (dirt dimensions), how wide and deep should I dig the holes? Soil is fairly hard but I have a backhoe.

2. Trying to a achieve a country driveway look with the trees on the same side touching eventually, how far apart should I plant them? Secondarily, what is the MINIMUM distance apart to plant without having them fight each other?

3. The driveway is gravel and about 12' wide on average, what is the minimun distance to stay away from the driveway, on each side, to prevent root intrusion on the driving surface and an excessivly low canopy which requires constant pruning?

Thanks much,


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I always plant trees about 2 inches high (i.e., 2 inches high measuring from the root flare not where the top of the soil is in the container). So the hole, IMHO, should be 11" deep and 30" wide. However, if the root flare is, for example, 1 inch lower on average in the pots, I would make the hole 10 inches deep in this example.

ABM's grow, on average 40 feet wide. So, maybe 25 feet apart? This would leave a little room for wider growing trees and they might not get too close when mature.

I always say 1/2 the spread is the distance from driveways. That would mean 20 feet, however, maybe some other members can answer this one better. I'm not sure if you need them to be that far from cement slabs? I say this because I see many ABM's planted in steet areas, with much less space, and they don't seem to damage the cement.

I would DEFINETLY apply wood chip mulch OVER a light sprinkling of compost or composted manure mixed with a little bonemeal around all the planted little trees.

I sprinkle a little bonemeal in the soil I put back in the hole to aid root growth. Many people say that isn't necessary anymore but I've had very good results by doing that.

    Bookmark   May 27, 2007 at 9:39AM
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Oh, I forgot to mention that I would plant the ABM's 20 feet from driveways (i.e., 1/2 the spread of the tree) because the dripline would be at the edge of the driveway when mature.

To me, that is most the visually appealing. Just my opinion though.

    Bookmark   May 27, 2007 at 9:48AM
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Thank you, you've confirmed the spacings I had in mind. And I'm so glad I asked about the hole depth and width as, for whatever reasons, I figured the holes needed to be deep and tight around the root ball to "hold" the tree firmly in place.

    Bookmark   May 28, 2007 at 9:17AM
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You're welcome. Good luck!!

    Bookmark   May 28, 2007 at 9:44PM
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