Root System - Knowledgebase Question

West Allis, WI
Question by clariceschm7
August 21, 2002
Have a Rose of Sharon Bush and would like to know how large the root system will be. How close it can be planted to the house. Growth states 6' wide by 9' tall.

Answer from NGA
August 21, 2002


Generally speaking, a shrub's root system will be at least as extensive as its top growth and usually spreads wider than the branches. This shrub is fairly deep rooted as well. Since it grows best in full sun all day long it is not usually used as a foundation plant because the house would shade it for part of the day. It also leafs out very late in the spring so may not be desirable in a prominent location by the front door for instance.

If you are concerned about plants and roots and the foundation or underground utilities (drains, pipes or wires, etc), it is a good idea to allow ample room. Also keep in mind that while most plants do not actually cause damage in and of themselves, the roots will take advantage of any existing irregularities or gaps and work their way in, thus potentially making any small problems worse.

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