My Japanese Lilac Tree did not bloom this year and I was told to fertilize it with a high nitrogen fertilizer. Should I use this fertilizer? Also, the trunk of the tree (3 years old) has a large 10" split in the bark about 3-4" wide and I was told to use tree wound dressing and wrap it. Does that sound correct? I live in Syracuse, New York and the tree is 3 years old and had blooms on it last spring but not at all this spring. I am also concerned about the split in the trunk. Please help!!
If you want your Japanese Lilac to bloom I recommend never fertilizing. It actually will thrive and bloom in poor soil conditions.
To much fertilizer can cause lack of blossoms and rapid growth.
Do not wrap the trunk split. Allow it to have air around it, but watch for any signs of insects or disease.
Here are a couple of links for you.
https://www.gardeningknowhow.com/ornamental/shrubs/lilac/japanese-lilac-information.htm
https://www.gardeningknowhow.com/ornamental/trees/tgen/cracking-tree-trunks.htm
About 3 winters ago, we had severe cold and lots of snow. Come spring, I thought my Japanese Tree Lilac had died. Mid June we decided to cut it down because there were no leaves. However, when the pruner handed me a branch, I saw tiny leaf buds on it. We stopped cutting, but four branches about 1-1 1/2" thick were cut off. The rest of the tree leafed out okay and has been producing wonderful blossoms. However, about 1/3 of the tree is dead. I know I need to cut these branches off, but is there hope for the rest of the tree? Is there anything I can do for it?
Japanese Lilacs in general don't need much pruning so there growth is not likely to cover up the missing branches.
Prune the dead branches and I would determine if you can live with the appearance of your tree.
Sometimes it's good to be reminded that a loss in the garden makes for opportunities.
https://www.gardeningknowhow.com/ornamental/shrubs/lilac/japanese-lilac-information.htm
The bark is splitting.
Splitting bark on a Japanese lilac tree can be caused by rapidly changing temperatures, especially when freeze-thaw cycles occur in winter, or rapidly changing water conditions, like a drought followed by heavy rains. Fortunately, the tree will probably be fine. Here is more information about this problem:
https://www.gardeningknowhow.com/ornamental/shrubs/lilac/lilac-bark-coming-off.htm
I am 71 years old and the lilacs in my yard have been here since I was 5 or earlier. I never ever remember them not having that glorious smell. This year I brought in the flowers for the kitchen table. No smell? I checked out this sight https://www.gardeningknowhow.com/ornamental/shrubs/lilac/lilacs-no-scent.htm They said cool and damp weather. I cannot believe this out of all the years I have lived here. We do have the farmers elevator in middle of this little town. Just a few blocks from us. We live in Lamoni, Iowa 50140 very tiny town. I am wondering if this has affected them? It has been a bit cool but we haven't had that much rain here. The lilacs are healthy and beautiful. Just wondering. I can't go with that cool and damp here given my period of time with these lilacs. Thank you. warbucks@grm.net
Yes, cool and damp weather can inhibit the flowering. Give them a bit more time to open fully and develop there fragrance.
You can even cut the flowers and bring indoors, as they warm in the house you will likely get more of the fragrance.
https://www.gardeningknowhow.com/ornamental/shrubs/lilac/lilacs-no-scent.htm
We have a Japanese lilac that appears to be thriving, aside from the fact that in its second year bore no blossoms. Is this common? The tree is now in its third spring, is approximately 12 feet high, and is now fully leafed on May 6.
Here are some articles that may help pinpoint the cause.
I would suggest a soil test to determine if too high of nitrogen levels exist in the soil.
To much nitrogen will inhibit flowering.
https://www.gardeningknowhow.com/ornamental/shrubs/lilac/japanese-lilac-information.htm
https://www.gardeningknowhow.com/ornamental/shrubs/lilac/lilac-bush-not-blooming.htm
I have a mature Japanese Lilac Tree that for the first time (after a dry winter in Colorado) has edges of some leaves curling and turning brown, not sure if insect or drought related? Thank you!
It is difficult to tell from just your description. It could be from dry conditions or more serious diseases such as blight or verticillium wilt.
These links have more information.
You can also talk with your County Extension Office.
https://www.gardeningknowhow.com/extension-search/
http://www.ct.gov/caes/lib/caes/documents/publications/fact_sheets/plant_pathology_and_ecology/verticillium_wilt_of_trees_and_shrubs.pdf
http://www.extension.umn.edu/garden/diagnose/plant/deciduous/japanesetreelilac/leavesdiscolored.html
https://www.gardeningknowhow.com/ornamental/shrubs/lilac/japanese-lilac-information.htm
My Japanese lil ac tree has not bloom sense the first year that I planted it is it missing something.
This article will help you.
https://www.gardeningknowhow.com/ornamental/shrubs/lilac/lilac-bush-not-blooming.htm