Top Questions About Leyland Cypress

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Questions About Leyland Cypress

Asked by
Anonymous on
April 19, 2011

Q. Possible Dying Tree

I have a Leyland Cyprus and the tip of most of the branches are getting brown and brittle. This tree isĀ four years old and has been in good shape up until now.

Answered by
Nikki on
April 20, 2011
Certified Expert
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Asked by
Anonymous on
August 11, 2013

Q. Trimming a Leyandii

Can you help me? I recently bought a 13-year-old house, which has a border of quite mature leyandii. I need to trim them, but I don’t know what is the right way to do this. I am guessing that the trees are the same age as the house.

Answered by
AnnsGreeneHaus on
August 11, 2013
A.

This article offers a lot of information:
http://www.leylandii.com/faq.html

Here are two more links to help: https://apps.rhs.org.uk/advice/profile?pid=596
and
https://www.leylandii.com/faq.html

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Asked by
Anonymous on
November 26, 2014

Q. pruning leylandii

When is best time to prune Leylandii that’s approx. 10 ft tall? Now or spring? Needs tidying. Thank you.

Answered by
Nikki on
November 26, 2014
Certified Expert
A.

You should wait until spring to prune this plant.

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Asked by
garden2012 on
November 29, 2014

Q. how to stake trees

Our 5′ leyland cypress’s that were planted 1/2012 are having issues with leaning during wind storms. There is 5′ fencing on the west side of them.

Answered by
theficuswrangler on
December 1, 2014
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Asked by
genmtrjoe on
March 31, 2015
state of delaware

Q. how much compost/manure to use around leyland trees

How much 5-5-5 compost/manure should I use around my Leyland trees? My Leyland trees are 20 ft high and showing signs of turning brown and yellow. I want to add some fertilizer (compost/manure 5-5-5) around the base of each tree, but I don’t know how much to use. They come in 40lb bags.

Joe, Thank You

Answered by
shelley on
March 31, 2015
Certified Expert
A.

If your leyland is turning brown and yellow, this could be a sign of disease or insect infestation in which case fertilizing may not correct the issue. I would encourage you to peruse any of the articles below which discuss diseases and infestations:

http://extension.uga.edu/publications/detail.html?number=B1229
http://www.ces.ncsu.edu/depts/ent/notes/O&T/specificplants/note133a/note133a.html
http://www.clemson.edu/extension/hgic/pests/plant_pests/trees/hgic2004.html
http://www.ces.ncsu.edu/depts/pp/notes/Ornamental/odin17/od17.htm

However, if you are pursuing the fertilizing route, evergreen trees need 1/8 bushel of manure per foot of height so in your case (provided I did my math right), that would be 2.5 bushels.

For more information on growing leyland trees, please visit the link below:
https://www.gardeningknowhow.com/ornamental/trees/leyland-cypress/growing-leyland-cypress-trees.htm

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Asked by
Linalbert99 on
July 14, 2015
Boston , MA

Q. Leyland Cypress trees are brown

Upper 1/2 of 20 foot cypress tree turned completely brown. Live 30 miles north of Boston. Had record snowfalls this winter, and now the upper half of my Leyland Cypress trees are all brown. Can the trees be saved? What can I do to help the tree?

Answered by
Downtoearthdigs on
July 16, 2015
Certified Expert
A.

There is no treatment for winter damage on Leyland Cypress.
With the subsequent damage that you have now had it's apparent that the tree was severely damaged.
You can prune away the dead branches to about 1/4" of any green still left on branches.
Leyland Cypress is very tolerant to heavy pruning but if more than 1/3 of the tree is damaged, it may need to be replaced.
It was a very harsh winter that effected the majority of the United States.

https://www.gardeningknowhow.com/plant-problems/environmental/winter-burn-in-evergreens.htm

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Asked by
Anonymous on
September 14, 2015

Q. Leyland cypress tree

I have 2 Leyland cypress trees that appear to be dead from the ground up. We have had, and still do have, a severe drought in NE Louisiana. Are the roots also dead or is there a possibility it will come back later? Thank you.

Answered by
Downtoearthdigs on
September 16, 2015
Certified Expert
A.

Here is a link that may help you determine the fate of the tree.

https://www.gardeningknowhow.com/ornamental/trees/tgen/tree-scratch-test.htm

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