Negatives on Leylandi Cypress

I need some negatives on planting leylandi cypress every 6' on each side of a small lot with septic systems nearby. Any knowledge out there?

I found the following on :

http://forestry.about.com/od/treeplanting/p/bad_leyland.htm


"This rapidly-growing tree quickly outgrows its space in a typical yard unless properly and regularly trimmed. Leyland cypress only lives for twenty to twenty-five years. I've found that trees left to grow large may have limited root support and are the first to blow down during high winds. You should consider the work needed to maintain a Leyland cypress before planting."

I couldn't come across any indication of root invasiveness. Apparently, if properly sighted for ultimate size, they are tolerant of many soil types and are a good windbreak.

Proceed with caution !
Every 6 feet is too close, as ONE plant can ultimately get 16 feet wide and up to 60 or more, feet tall.
They grow very fast, but will become a huge maintenance issue as far as trimming goes.
Any cypress family member that grows this quickly is bound to give you root problems after a while, especially if planted that close together.

Here's a mature Leyland Cypress, 36m tall:

And its trunk, over a metre in diameter.

Do you really want something this size in a small lot??

Resin

...much less with septic lines in the general vicinity !!!

I planted 6 on a slope with marginal soil and probably too much shade three years ago. No problem with excessive growth.

Thank you very much for the info. The person who did this is going to remove them.

Plus they're prone to bagworms, which I'm getting this year on one I planted several years ago. I've been picking them off like crazy.

I don't think we have bagworms out here. I've never seen anything about them. Thank for the info.

So, was it a neighbor who planted it on your property line? Just curious from the response "the person who did this is going to remove them."

A new house builder in the community where I live has planted the trees down either side of his lot and the neighbors were complaining. I'm on the environmental committee here so I was asked by the ajudication committee to help out and where better to ask than DG where there are so many well informed people. I sent a list of your answers plus what I had and the people are going to remove the trees. Thanks a bunch. Patricia

These trees should never be planted in an average garden, they grow to fast, block light and rob the soil of moisture and nutrients.
And they are ugly! A constant source of disputes between neighbours. Don't do it please because sooner or later you will
regret it.

Sincerely,

Pajonica.

Gotcha, thanks.