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Old 03-25-2008, 03:50 PM
yam yam started this thread
 
225 posts, read 761,428 times
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I would like to plant some bushes or trees along the terrace that my retaining wall holds up. My main goal is to get something with a really extensive root system that will help secure the dirt behind the wall. It also needs to be less than 15 feet high at maturity (so it doesn't interfere with a deck above it) and not a trailing or spreading plant (so it doesn't interfere with the wooden posts supporting the deck). This area gets partial afternoon sun and a fair amount of water from my sprinkler system. The dirt is about four feet of topsoil with hill country caliche underneath.

I don't know much about the different species available, but I'm sure there are a few kinds of bushes or trees that would fit these constraints. Any recommendations?
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Old 03-25-2008, 04:30 PM
 
Location: Rural Central Texas
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Grass will have a more extensive root system than any shrub or tree. Given a deep watering cycle instead of more frequent shallow watering it will develop both deep and wide roots that will hold topsoil without risk of root damage to the wall.
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Old 03-25-2008, 04:52 PM
 
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Plus it won't push your wall over when it gets full grown.
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Old 03-26-2008, 11:02 AM
yam yam started this thread
 
225 posts, read 761,428 times
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Thanks for the replies so far. I hadn't considered grass but it sounds like I ought to. Is there anything else I could add along with the grass, maybe something that would have some really deep roots throughout the 4 feet of topsoil? I imagine the grass roots wouldn't get more than several inches deep.
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Old 03-26-2008, 11:09 AM
 
Location: Great State of Texas
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Local nurseries are a good place to get information. The folks that work there know their stuff and can make some recommendations. Stay away from Lowe's/Home Depot ...they'll just try to sell you stuff.
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