White growth on cherry tree bark
15 years ago
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- 15 years ago
- 15 years ago
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cherry tree bark/insect damage
Comments (6)"What caused the injury(ies)" Mabel, Montmorency is said to be good to -40F but not under every circumstance. There are so many things that have to be just right for your tree to be healthy enough to survive that limit. For example a tree that has begun to become stressed can become infected easier with bacteria P.S. short for "Psuedomonas syringae", which is an opportunistic disease. Once stressed and established these bacterias then try to kill plant cells in the way diseases do and the P.S. bacterias do "ice nucleate" adjacent plant cells. This means that the cells that are otherwise prepared to survive much colder than below freezing temperatures are less able to because the cells get injected with compounds that favor ice crystallization at closer temperatures to the normal freezing of water, when then the cells will freeze and burst. I would say most extension services are really not prepared to advise all the things you must do (tree health) because this can become a rather involved project in some weather locals and even soil types. You can't always rely on spraying to prevent initial infection sites because many of them have got specialized and resist the chemicals. I would be prepared to tell you to burn the tree after you've eaten the cherries, or at least surgically torch all the open diseased area. And if it is the disease I truly think it is (it happened in the same way to my cherry in Alaska) planting a peach (lower 48 peach experiences) will give you the same maintenance requirements because they are just as susceptible or more, to the same disease as cherries. But if you DO plant peach I've heard about a new peach rootstock bred in N.J. called 'Guardian' that has in trials shown to keep the host tree scaffold in good enough condition to prevent these bacterial infections, for the most part....See More3 problems - apple bark, cherry branch, tree not growing...
Comments (8)you dont want to take the time to rotate the pix.. but i should take the time ... blah.. blah.. blah ... 2nd pic.. why the giant staking procedure .. how big is that tree. and how long has it been there???? is this a fruit tree or an ornamental flowering cherry???? third pic.. any conifer that does not grow is dead ... but dead ones cna hold their needles for a year or so.. until hot weather browns them.. and makes them fall off ....is it supposed to be yellow??? or blue/green ... but dead ones.. eventually shed leaves ... i say.. rotate this pic.. and post it in the conifer forum ... [what the heck did you edit out of that pic.. lol.. the neighbor standing in your pic with a silly grin????] i know the first pic is a problem.. but i am blanking on it ... ken...See Moremillions of white somethings on bark of weeping cherry
Comments (18)Sheesh, I could have sworn you said they were like small white pencil points! lol. Male peach scales, which are the white ones, are always clearly oblong in shape...quite distinctive. You took a VERY good picture. There's no other scale that looks quite like this. I'd ask you to ponder most carefully on the recommendation of Imidicloprid drenches. This chemical would need to be applied in the spring when your plant is probably getting ready to flower and it is well known that imidicloprid is translocated to the nectar and pollen of flowering plants, making it a problem for pollinating insects and even hummingbirds. I think that you will have quite a bit of success with your horticultural oil applications, as long as you attend to your plant three or four times over the fall, winter, and early spring. Be sure to concentrate on getting the product all over the trunk, branches and twigs...nooks and crannies and all. Please use a commercial product specially manufactured to be mixed with water to make an emulsion. Horticultural oil applications have been the most recommended and successful remedy for a wide variety of scale insects for generations....See MoreWhite growth on bark
Comments (8)Though lichens are not a problem for plants, they 'can' mean that there are other issues going on. I often consider them a yellow flag...a warning signal. Lichens tend to grow where there is plenty of good air circulation, sunlight, moisture, etc. This might mean that the overall canopy of the host plant has become thinner and less vigorous. The pictures of the twigs indicate that there has been some die-back on his bonsai. If that is the case, your friend should investigate the underlying problem with his plants. This can be a challenge for grower of bonsai, as the opportunities for plant decline are numerous. How long has he had the plants in question, and when was the last time they were root pruned?...See More- 15 years ago
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alabamatreehugger 8b SW Alabama