[SpiveyJr]

I was thinking about getting a soil test done to verify the conditions, but I dropped milorganite on my lawn May 5th and don't want it to impact my soil testing. How long should I wait to test my soil?

 

[Powhatan]

Since soil testing samples should be taken from depths below the surface, I don't believe a recent fertilizer application will grossly effect testing result numbers. That being said, from what I've read in various online posts on the subject suggested waiting at least 3 weeks to test after a fertilizer application. Milorganite advertises that it feeds the soil for up to 10 weeks, so that's another number if you want to use that.