How Do I Save Cold Damaged Windmill Palm Trees?
Question: I have 2 palms that are 7 years old and about 15 feet tall. They are not producing any leaves so far this year, by this time they would be going crazy. We are in TX and we had a cold winter this year with temps below freezing for 4 days or more. The wind beat all the old dead leaves so this year it started with no dead to draw from. Is it in shock ? Will they start to grow this year or next, or have we lost them? The trunk and the rest of the tree looks good. Can you help?
Answer: I am very sorry to hear about your Windmill Palms. A lot of people lost palm trees due to cold winter. The survival of your palms depends on how sever the cold damage is. If the bud was not damaged, palms should survive. If the bud is badly damaged, they might die. From what you telling me in, your trees should recover. Since they have been damaged by the cold, their immune system might be weak creating an opportunity for fungus and insects to attach. Spray your palm with Bonide Products Copper Fungicide. This should keep the fungal infections away.
Also, make sure to protect your palm from cold. Since your palms are already weak, they don’t need more cold damage. There are few ways you can do it. The quick and easiest way is to spray it with cold protective spray called Freeze Pruf. This spray will increase palm’s cold tolerance by 9F. Here is my article on how to protect palm tree from cold. ~Susan Brian
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A lot of palm trees die from fertilizer root burn and nutritional deficiencies. To avoid these problems, use fertilizer that has continues release formula, which feeds your palm tree for few months, rather than using a cheap fertilizer that will wash away after 2-3 rains.
I personally use 
It is time to protect your palm trees from cold! To avoid the cold damage, I spray my palms with 
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