UKTC Archive

RE: Coast Redwoods

Subject: RE: Coast Redwoods
From: Wright, Matthew
Date: Mar 14 2001 16:56:10
Appendix 2 of the DETR publication "Principles of Tree Hazard Assessment and
Management" by David Lonsdale provides information on the structural
properties  and propensity to failure of numerous genera. It would appear
that Sequoia have a very low propensity for failure at a fork or due to
decay. Hope this is of use.

Matthew

Matthew Wright
Landscape & Tree Officer
Planning Services, Exeter City Council, Civic Centre, Paris Street,  Exeter
EX1 1NN
Ph:  01392 XXXXXX   Fax: 01392 XXXXXX  e-mail: matt.wright@xxxxxxx.gov.uk


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From:         Adam Hollis[SMTP:adam.hollis@xxxxxxxxxxxx.net]
Reply To:     UK Tree Care
Sent:         14 March 2001 16:24
To:   UK Tree Care
Subject:      Coast Redwoods

Does anyone have much experience of structural failure in mature 
coast redwoods?
I've just come across an avenue of 30 trees, up to 100 ft tall by 100 
cm dbh at the foot of a small railway embankment, 6 m from the lines. 
The branches just about meet over the track.

My own ltd. experience at Bedgebury Pinetum, was that though 
generally a robust tree, we lost a lot more of them - free-standing 
and in plantations - than we did giant redwoods, in the 1990 storm. 
Obviously, they tend to fork and lack the elegant taper of the latter.

Are these forks prone to splitting out?  Certainly, there seems to be 
a fair propensity for included bark in the unions?

They don't seem to be affected by anything in Strouts & Winter, 
though I thought they shared the same susceptibility to honey fungus 
of their cousin?  Am I right in thinking that the buttresses put on 
pronounced increment in response to honey fungus colonization?

And finally do they share the same propensity for occasional branch 
failure in snow and storm?

Your comments welcomed, please

Regards

Adam
-- 
Adam Hollis
The Garden Partners

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