St. Augustine grass struggles beneath Texas's oak trees. The heavy foliage of oak canopies transmit only 1 to 6 percent of available sunlight. Turf grass needs 12 to 25 percent of available sunlight. Under live oaks in Florida, dwarf Delmar had the highest shade tolerance of tested St. Augustine grass cultivars.
About this Author
A freelance writer, Judy Wolfe has owned Prose for the Pros, a freelance writing business, since 2006. She's been an inveterate traveler since 1961 and draws on her travel experiences to provide articles for such websites as Chincoteague Island Vacations and Berlin Dude. Wolfe holds a Bachelor of Arts in literature from California State University at Pomona.