I am a new homeowner and last fall planted a pink dogwood in my front yard. I live in west texas in zone 7a and have never planted a tree before. I was so excited when my dogwood stated producing leaves about 3 weeks ago. We have not had much rain this year and with temps getting close to freezing this past month I may have gotten too overprotective and over watered it because the tips of the leaves started yellowing and are turning a brownish color in some places. I did notice what I think may be fungus gnats in the mulch. Ive been looking online and gosh there is just so much information it is hard to know what to do to help my tree. I was hoping someone with more experience might have some advice. Thank you in advance.