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Our conifers are apparently dying! We have 6 different types of mature conifers that have whole branches, from the base, turning brown and going crispy.
We feed all of our trees and shrubs with a surface dressing of fish blood and bone in early spring and a second dressing mid-summer. It has been very wet this summer but it's been wet before without it being a problem.
Is there anything I can do to prevent the trees dying and the problem spreading to unaffected trees?

Conifer Conifer2 Conifer3



Could be root damage - be that too much water or manual (digging in the area). Improving drainage will help with that, though quite how you prepare for the very wet summer we had is another question. There is an aphid that attacks Cypress but as it is not spreading I think it is drainage. Do you know what type of evergreen you have? Leylandi will not regrow but Cedar normally will.

3 Aug, 2012


The ones that are most badly affected are Pencil Pines, we have 250 Leylandi which are thriving, as are most other plants and shrubs in the garden. The problem hasn't affected other evergreens in the same area so I doubt improved drainage is the answer.

Thank you ever so much for your interest.

Regards Wendy.

3 Aug, 2012


There is a disease affecting conifers around the UK. I suggest the RHS website for more detail of name and treatment.....if any. Wow.... 250 Leylandii must be some sort of a record.

3 Aug, 2012


We planted them right along the length of a public footpath over one of our paddocks....they really are the best example of Anti-Social behaviour!!! Out of sight, out of mind! We rightly deserve an ASBO!
Thank you for your advice, I will refer to the RHS.

3 Aug, 2012


Could it have been sprayed with salt in winter/root level? Browning can take a while to show.

3 Aug, 2012


Nope! They are not anywhere near a road, or a salt mine or the ocean! (Or a fish and chip shop!) It's so sad, they were lovely trees and maturing nicely.

Thank you for your interest! Regards, Wendy.

3 Aug, 2012


We left 6 leylandii behind us at the bottom of a long garden after we sold some land we owned. They are are amazingly still there. That was ages before they became a source of litigation and arguments. They are massive now even though we cut them every year for around 18 years. They are not shading anything anyone cares about.

3 Aug, 2012

How do I say thanks?

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