Q.soil
I have afew pine trees abd a juniper type of tree around my lawn and garden . My lawn looks terrible and only some plnts make it. Is my soil too acidic?
A soil test and ph test are the only way to know what nutrients are in your soil.
Your County Extension Office can help you with a soil test.
A common reason for poorly growing grass around trees is sunlight and moisture levels.
https://www.gardeningknowhow.com/extension-search/
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/testing-soil.htm
https://www.gardeningknowhow.com/ornamental/trees/tgen/tips-for-growing-grass-under-a-tree.htm