Can you tell me what went wrong with the middle tree?

Question

These 3 trees appeared equally healthy 4 months ago. About 2 months ago, the middle one started looking sick and has continually declined since then. Can you tell me what’s wrong with the middle tree? And how to prevent something similar in the future when we replace the dead tree?

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Answer 1

It's hard to say when the tree is this far gone. Did you notice anything amiss such as discolored leaves, spots on leaves or stems, leaf wilting? Are they all three the same type of tree or was it different? Do they all have similar cultural requirements? I would consult the local extension agent and discuss the tree's appearance before it died.

https://www.gardeningknowhow.com/extension-search