So my back yard is all Laurel oaks that are messy with constant leaves dropping and its pretty shady too. I just trimmed the trees off my roof and also got more light to hit my St. Augustine which is yellow and thin, even with fertilizer and water I cant get solid turf. I know my PH is all whacked out from the acid in the leaves and us mulching them with the mowers, what all do i need to get a decent back yard? I know my Floratam St. Augustine hates shade, which is why I'm half tempted to try some Palmetto. Any ideas guys?