Photinia Plants

Photinia Roots

Anonymous added on October 7, 2012 | Answered

I have 20 7-ft high photinias with a disease planted close to my house, which may be the cause of my foundation problems. Do I need to dig up the roots? The bark is very hard.

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Certified GKH Gardening Expert
Answered on October 8, 2012

From what I understand, these shrubs have a fairly heavy, or extensive, root system so it is possible that they could be interfering with your foundation but only if they were planted within 5 ft. or less of your home. If they are diseased, it is likely from a fungus, which is common in these shrubs. While treatment is possible, I would recommend transplanting them elsewhere if your foundation is being affected by the roots.

I would first try treating the fungus issue so they are somewhat healthy prior to moving. You might also need to prune them back by about a third. These articles will help:

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