I am sorry for this delayed reply to your gardening question. We are transitioning to a new Q&A system and your question was unfortunately lost in the transition. I have discovered it now and hope this reply is not too late to be of help.
Bermuda needs water and fertilizer to fill in well and stay strong. It also wants lots of sun. Perhaps some of your areas are too shady. If so you may need to consider thinning out the tree canopy a bit to allow more light in...a brighter shade in other words.
Thanks for the question. Please stop in again soon!
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