Leyland Cypress

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  1. Possible Dying Tree
  2. Trimming a Leyandii
  3. pruning leylandii
  4. how to stake trees
  5. how much compost/manure to use around leyland trees
  6. Leyland Cypress trees are brown
  7. Leyland cypress tree
Asked by Anonymous on April 19, 2011
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.

ANSWERS
Nikki
Certified GKH Gardening Expert
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Asked by Anonymous on August 11, 2013
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.

ANSWERS
AnnsGreeneHaus

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
Pruning Leylandii

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

ANSWERS
Nikki
Certified GKH Gardening Expert

You should wait until spring to prune this plant.

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Asked by garden2012 on November 29, 2014
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.

ANSWERS
theficuswrangler
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Asked by genmtrjoe on March 31, 2015
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

ANSWERS
shelley
Certified GKH Gardening Expert

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
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?

ANSWERS
Downtoearthdigs
Certified GKH Gardening Expert

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
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.

ANSWERS
Downtoearthdigs
Certified GKH Gardening Expert

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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