Top Questions About Japanese Lilacs

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Questions About Japanese Lilacs

Asked by
Anonymous on
November 11, 2014

Q. Japanese Lilac tree

How do I get a Japanese Lilac tree to bloom? I live in Zone 5-6. It’s been at least 5 years since I planted the tree. It was a small fingerling from a catalog.

Answered by
Nikki on
November 11, 2014
Certified Expert
A.

Here are various reasons why lilacs won't bloom, which may help, though the likely cause is a lack of phosphorus in the soil: https://www.gardeningknowhow.com/ornamental/shrubs/lilac/lilac-bush-not-blooming.htm

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Asked by
davepatsy.hague on
May 29, 2015

Q. Need info on japanese lilac tree

Does this tree have large roots that are drawn to water, how far from house foundation should it be planted, and is it messy in the fall as leaves fall?

Answered by
Downtoearthdigs on
May 29, 2015
Certified Expert
A.

Well, you have cute kids!
Here is a link with information about the Japanese Lilac.
You will need to give this tree plenty of room as it will grow large.

https://www.gardeningknowhow.com/ornamental/shrubs/lilac/japanese-lilac-information.htm

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Asked by
blbrinkman on
June 4, 2015

Q. Can you grow hostas under Japanese Lilac trees

Would planting hostas under our Japanese Lilac tree harm the tree at all?

Answered by
blbrinkman on
June 4, 2015
A.

I need an answer to can I plant hostas under our Japanese Lilac tree without harming the tree?

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Asked by
npawlik on
June 9, 2015

Q. Japanese Lilac tree flowering

Not turning white but stays green and falls off. Multiple flowers not becoming a tree flower. 15 years old and flowered last year.

Answered by
Downtoearthdigs on
June 10, 2015
Certified Expert
A.

Make sure your Lilac is receiving adequate water.
Water stresses can cause leaves and flowers to drop.
Pruning can rejuvenate a lilac and stimulate flowering the next spring.
Here is a link about Japanese Lilac.

https://www.gardeningknowhow.com/ornamental/shrubs/lilac/japanese-lilac-information.htm

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Asked by
micheline.daye on
June 12, 2015

Q. beautiful Japanese lilac

I have a beautiful Japanese lilac. Do I have to cut the dead flowers after they are done blooming? My tree is very healthy. Last year I hardly got any blooms on it. Was wondering if it was because I didn’t trim the dead flowers. However, this year I have lots of blooms on it.

Answered by
Downtoearthdigs on
June 13, 2015
Certified Expert
A.

Yes you can prune off the spent blossoms as needed.
Usually pruning can be done after the the plant is done blooming so if you don't dead head, this would take care of the old flowers.

https://www.gardeningknowhow.com/ornamental/shrubs/lilac/japanese-lilac-information.htm

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Asked by
Oderry on
July 29, 2015

Q. two trunk japanese lilac

On a 2-trunk 3-year-old Japanese lilac tree, does it matter which one is cut to make a single trunk? I planted two mail order root Japanese lilac trees. Two years later one has a single trunk the other 2 trunks. Does it matter which trunk is pruned (equal diameter) and how close to ground?

Answered by
Downtoearthdigs on
July 30, 2015
Certified Expert
A.

I would wait until the tree is dormant to prune.
I would leave 1 to 2 inches of trunk. You may have sucker growth in the spring and would want to trim those away as soon as they grow.

https://www.gardeningknowhow.com/ornamental/shrubs/lilac/japanese-lilac-information.htm

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Asked by
Anonymous on
June 21, 2016

Q. How fast does japanese lilac tree grow?

I would like to plant a Japanese lilac tree for privacy in a neighboring garden. Soil is light and I live the northern Minneapolis suburb in Minnesota. I think that my zone is 3.

Answered by
Downtoearthdigs on
June 21, 2016
Certified Expert
A.

The Japanese Lilac is hardy down to zone 3. It has a medium growth rate. This is a great tree to enjoy in the spring when nothing else is blooming in our gardens.
I also garden in MN and you are zone 4a or 4b.

Here is a great link.

https://www.gardeningknowhow.com/ornamental/shrubs/lilac/japanese-lilac-information.htm

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