More than that, what you can’t see in the photo is that it is also fruitful.
#Heat stress wind burn on plants cracked
Notice that the bark is slightly damaged and cracked on the top but the branch remains alive. Here is such a damaged branch on a Reed avocado tree that has been exposed yet painted for a few years now: However, if this doesn’t happen and the branch remains exposed to the hot sun for many months (no leaves grow over it to shade it), then it will eventually still be damaged somewhat even though it is covered with paint. The best case scenario is that new leaves and branches grow over this exposed branch and shade it. If left unprotected, the branch would get burned so badly that the bark would turn completely black and begin cracking and eventually die.
With the white latex sunscreen, the branch is protected and usually won’t get burned further. It doesn’t need to be full strength: diluting the paint 50/50 with water will make a sufficiently opaque coating. It got scorched during a recent heat wave. The branch in the photo above is on a young Pinkerton avocado tree that grew out a long limb which drooped enough to expose some of its young skin to the overhead afternoon (west) sun. If left unprotected, a branch that is exposed, especially to the south or west sun, will burn. Believe it or not, avocado bark is like our skin and gets sunburned.
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