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Nov 25, 2016 6:34 PM CST
Hi All, I have planted azaleas along a concrete footpath with a concrete garden edge, for a couple of months all looked good now they are starting to look a bit sick. Could it be from the new concrete on both sides of them making the soil too sweet, if so what can I do to alleviate the problem?. Thanks.
Name: Daisy I
Reno, Nv (Zone 6b)
Not all who wander are lost
Garden Sages Plant Identifier
Nov 25, 2016 8:09 PM CST

I don't understand "sweet" but here goes. Concrete is very alkaline. On a scale of 0 (highly acidic) to 14 (highly alkaline), concrete is in the 11 and above catagory.

Azaleas love acidic soil. So it could be that the lime byproduct of concrete is leaching into your garden making it too alkaline for your Azaleas. Or it could be that you didn't plant them in an acidic enough soil in the first place. Or a combination of the two.
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and proclaiming...."WOW What a Ride!!" -Mark Frost


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