I have a Maple tree with Black tar spot for 2 years now I have read about it not hurting the tree but the leaves keep falling off starting in mid july Can I compost those leaves? and will this continue ? what do I do about it to get rid of it?
If you want to compost diseased foliage, you have to make sure your compost pile reaches a temperature hot enough and long enough to kill the pathogens. Here is how:
https://www.gardeningknowhow.com/composting/ingredients/compost-diseased-plant-leaves.htm
You can increase the grade around your tree and pick up all the fallen leaves to help get rid of tar spot. Here is more:
https://www.gardeningknowhow.com/ornamental/trees/maple/maple-tar-spot-disease.htm
I have some Manzate 200 wettable powder (80% mancozeb). Please advise solution mixing strength and if a sticking product (such as liquid dish soap) can used. Should the mixture be applied to the tree trunk or as a soil drench? What is the best time of the year to apply in the Mississauga, Ontario (zone 5) area? Any other useful information would be appreciated. Thank you.
The article below gives amounts to use, plus follow the instructions on the Manzate container. The Manzate instructions say to use a spreader-sticker if needed. You will spray it on the leaves beginning at bud break. See more below:
https://agsci.oregonstate.edu/sites/agscid7/files/horticulture/osu-nursery-greenhouse-and-christmas-trees/onn100110.pdf
http://hyg.ipm.illinois.edu/pastpest/200220c.html
https://www.gardeningknowhow.com/ornamental/trees/maple/maple-tar-spot-disease.htm
What is this black growth under leaves? For what it's worth, a very old huge black walnut tree was cut down 2 years ago, approx 30 yards from our little 9 yr old maple. Thank you If you already sent the answer to this I missed it, and apologize.
It is quite difficult to see, since the spot in question isn't quite in focus. What I can see looks like Maple Tar Spot (Rhytisma sp.).
This isn't usually fatal. Here is an article to help you with the disease and treamtent:
https://www.gardeningknowhow.com/ornamental/trees/maple/maple-tar-spot-disease.htm
I have a maple that likes 55/15/30. I also have a bag of 18/6/12 fertilizer. Can I use that bag on my maple, fertizing three times since 18/6/12 x3 = 54/18/36? I had planned to fertilize in March, April, and May.
Fertilizing trees is not an annual chore. It should be done on an as-needed basis. If you've been fertilizing yours yearly, I would hold off on any more for a few years. You can take a soil test to see if anything is amiss. Here is more information:
https://extension.umd.edu/hgic/topics/fertilizing-trees-and-shrubs
r stems . New stems with a few leaves
It may be root bound if this has not had root pruning in this time! Doing so, and refreshing the soil will help:
https://www.gardeningknowhow.com/houseplants/hpgen/prune-roots.htm
https://www.gardeningknowhow.com/ornamental/trees/japanese-maple/japanese-maples-in-containers.htm
This is a new addition to my yard and I think it might be dead because there isn't any new growth but it's still early spring.
You should be seeing some budding, or signs of growth by now. You can do the scratch test to make sure the tree is alive:
https://www.gardeningknowhow.com/ornamental/trees/tgen/tree-scratch-test.htm
Sometimes, plantings can fail. Whether it be wet soils, or colder than normal temperatures, it happens. If a scratch test reveals that the tree is dead, then replacing it will be best. If it is alive, then proper care may bring it out of dormancy.
https://www.gardeningknowhow.com/ornamental/trees/maple/autumn-blaze-maple-trees.htm
My neighbor across the street was expanding his driveway and the contractor ripped this poor Maple tree out not leaving much of a root ball. That was in August of last year. I rescued it an planted it in my yard. I have watered it and put it in Miracle grow soil, as that was what I had on hand that day to get it in the ground. I have been hopeful by the appearance of a few leaves at the top bottom of the tree but am wondering if I should do more.
I would give it the scratch test to see if it is still alive. If it is, a little pruning and some fertilizer may help. Is this a Japanese maple?
https://www.gardeningknowhow.com/ornamental/trees/tgen/tree-scratch-test.htm
https://www.gardeningknowhow.com/ornamental/trees/japanese-maple/japanese-maple-care.htm
https://www.gardeningknowhow.com/ornamental/trees/japanese-maple/japanese-maple-wont-leaf-out.htm