Hi Wayne,

Actually, pine trees do not make the soil more acidic.  Here are a couple of articles that discusses that garden "legend":

https://extension.unh.edu/blog/do-pine-trees-and-pine-needles-make-soil-more-acidic

https://extension.oregonstate.edu/news/myth-vs-reality-whats-truth-behind-some-common-gardening-practices

To quote the second article, "If you are having difficulty growing other plants under your pine trees it is likely due to the fact that evergreen roots are numerous and shallow and compete for water and nutrients. The shady conditions under a tree cans also make growing other plants a challenge."

And an article that talks about testing the pH of your soil:

https://cmg.extension.colostate.edu/Gardennotes/222.pdf

Hope these help!



Hello Wayne.  I am sending an additional write-up specifically on turf care.  This write-up discusses best practices for a healthy turf, including mowing height, amount of water needed, aeration, and nutrients needed and when to apply them.  To your question, many of the soils in Colorado are naturally alkaline, not acidic and do not need lime.  CSU has a lab that can test a soil sample from your property if you would like to know how acidic your soil is.  I have included a fact sheet on how to do this as well.

Basic Turf Management Principles:

https://cmg.extension.colostate.edu/Gardennotes/551.pdf 

Soil Sampling:

https://extension.colostate.edu/topic-areas/agriculture/soil-sampling-0-500/