I'd have to chime in with David on this one. I have never seen a climbing
hydrangea do any damage to a structure, regardless of its construction. And
since it is a deciduous climber, it is unlikely to retain much in the way of
moisture against the side of a building. Because of its clinging mechanism, it
doesn't attach itself well to a trellis anyway, but needs a broad, relatively
flat surface to adhere to. FWIW, I find they bloom better with at least a few
hours of sun each day - and they will develop better fall color also.

pam - gardengal



David J Bockman wrote:

I have to take up a contrary position to the other posters on this subject.
Hydrangea anamolis petiolaris will not damage those surfaces to which it
clings. It does need support as it will become quite woody and 'deep', but
it won't damage via its gripping mechanism, which is either vegetative
'hooks' or by excreting pure calcium carbonate which cements the stem to the
structure. A great choice for the sites you mentioned!

Dave

"pelirojaroja" wrote in message
.. .
Hello,

After much search, I am ready to plant a very nice, large 3-ft tall
climbing
hydrangea (Hydrangea anomala petiolaris). I have one of two sites in
mind,
though.

One is in fairly deep shade, and the vine can climb over and around the
railings of the north-facing front porch.

The other potential site is on the western edge of this same porch, where
the vine can climb up the railing corner and possibly up the side of the
house. It will receive more sun in this area -- qualifying it as a
"partial
sun" location (afternoon sun, but shaded in part by the house next door).

I think it would look great if this vine would grow up the side/corner of
the house. However, my house has vinyl siding. Although the web sites
I've read say "Its climbing stems cling to whatever it is growing on" --
I'm wondering if this means siding, too? Or is the siding too slippery
and
impenetrable for the stems?

Any advice much appreciated.

-- pelirojaroja