We live in Central Florida. We were told they are flame maples. The whole tree does not turn red, only new growth.
I have three 50 ft. maples all planted approx. 8 years ago. they now have dead and dying bunches of leaves mostly on the tips of the branches. leaves also have some holes in them possibly from insects. The leaves also show signs of tiny spots such as insect droppings. I cut several small branches off the tree and the core of the branches have dark brown and or dark green centers. A few leaves are stuck together with what appears to be a cotton like substance. If you know what this is please advise me as I have spent countless hours talking to people with no positive results. Also what remedy if any is available?
The one nursery had indicated it may be a fungus in the core of the branches and that a systemic fungicide drenched around the base of the tree might do the trick. Also the canopy should be sprayed with fungicide, pesticide, miticide spray might help. This is the best info I have received however I think it is mostly guesswork.
Thank you so much for the comprehensive response. We will take your advice and we will recontact our extension office. Is it possible to recontact you personally later on this item if there are additional questions in the near future?
More questions have come to mind. Our maples are in three separate areas of the yard, about 100 to 150 feet between trees. Why, when they have been healthy for 7 years would this turn up in all 3 trees in the same summer. And what about our newer maple about 200 feet from one of the infected trees. It is about 2 years old and 15 feet high and does not appear to be infected. What shall we do to save it?
Also, if we cut these infected trees down, can we replant something else...a maple? If the ground is infected what then?
The early signs of wilt are subtle and often go unnoticed. If that is what is wrong with your trees, there have probably been symptoms before. In some cases, wilt goes on for years and the trees manage to survive. In others, it progresses very rapidly and can even kill in one season. Some cultivars are more resistant than others, and the healthier a tree is, the more likely it is to survive.Trees generally have a root spread equal to the size of the tree above ground. that means that even though the maples may be 100 ft. apart from trunk to trunk, the roots could be overlapping.The younger tree doesn't have such an extensive root system and is probably far enough away at this point. It may also be a more resistant cultivar. The only thing you can do to help a tree fight off infection is to keep it as healthy as possible. Make sure there is never any drought stress. Take care of insect problems. Prune out damaged or diseased branches. If it turns out you have to remove your trees, it would be best to replace them with the most resistant trees you can find. Oaks, flowering crabs, birch, hawthorn, and willow are some recommended by university horticulture departments. If you'd like to read more (and also confirm that the green or black streaking is a common symptom) from Purdue University:https://docs.google.com/viewer?a=v&q=cache:Zw35MJKl39UJ:ces.purdue.edu/extmedia/bp/bp_6_w.pdf+& hl=en&gl=us&pid=bl&srcid=ADGEESg4fEnk3YDna_HqTfsnzBCYely04qV4nQgT4ZoLP0Zz80xvLQOr2VgD_et5zDTHwiFL3MdFLYRvHq5zLhXRZYdFfu6KHvISl9KXnIBUHwZEZO3WwdvpYhNbL_a5xnPFgTY6v0sw&sig=AHIEtbTNwAqpqRhvtSC9y45LMpRlg4t6uQhttp://ohioline.osu.edu/hyg-fact/3000/3053.htmlHowever, I wouldn't make any decisions until after you consult your Extension Agent. You want to be absolutely certain fo what you're dealing with first.Anna
Anna, We have finally consulted with our extension agent. He was on vacation. We took samples and pictures and he is confident the problem is Black Twig Borer. We found the pest inside the twigs. The problem we are having is identifying the best control agent. What is the best pesticide for this problem, when (time of year) should the trees be treated, and should we trim the dead tips before, after or at all. There is also related fungus (from the bug). So we may need a combination or two products. We have done some research on our own but could not find a difinitive answer. We are not precluded from getting commercial products as we have a tree farm also. So we are not interested in the "Home Depot" cure.
Our extension agent has not gotten back to us. There seems to be some issues there, the office is very understaffed. Can you help us?
I do not see a response. What additional information do you need?
This is concerning the three sick maples about which we corresponded with you over a week ago. You thought it was maple wilt.