Any genius MSE ideas for attaching a trellis to a metal wall?

BexInLondon

We live on the top floor of a new build block of flats and are lucky enough to have a massive outside terrace but on the 11th floor. After early experiments with clematis were thwarted by the wind I've found a slightly more sheltered corner and my clematis thrived so much it has outgrown its small trellis. I want to put a bigger trellis behind it so it can carry on growing upwards. However the problem I have is that our walls are metal and I can't think of a way to make the trellis stay up without folding down on itself. The initial small trellis is fixed in place with LOTS of canes and garden wires but I'm not sure how to fix up the bigger one, especially since I don't want to damage the plant by fiddling around behind it too much.

One amazing idea I had was to superglue some tiny screws to the wall and tie the trellis on with garden wire but they just wouldn't stick. Idea number 2, white-tac, worked until a bad day for wind brought the trellis AND the clematis down flat onto the floor.

If anyone has any bright ideas I will be sooo grateful!

rhiwfield

If the metal wall is smooth how about some form of suction hanger?

The_Plush_Doormat

You can buy planters with the trellis attached. Like this one:
http://www.argos.co.uk/static/Product/partNumber/7201620/c_1/1%7Ccategory_root%7CGarden+and+DIY%7C12107492/c_2/2%7Ccat_12107492%7CGarden+tools+and+decoration%7C12107647/c_3/3%7Ccat_12107647%7CGarden+planters%7C12107650.htm

This one is wooden, but you can buy plastic ones.

sparkleworld

You could use a free standing trellis or try liquid nails

Regards
Sparkle

shelovestobuystuff

Ehm?Magnets?Attach strong magnets to the trellis and away you go.
http://www.supermagnete.de/eng/magnets.php?group=countersunk

shelovestobuystuff

Or some hanging hooks going over the wall with the trellis suspended from it?
IKEA is great for adaptable storage solutions so you may find hooks you can use there,some over door hooks or something would do the job.

bordercars

use a tube of stick like s**t. stick anything you want to the wall and attach to that maybe a small block of wood you could then screw to.

shelovestobuystuff

I think that like 'The plush doormat' suggests you may find it easier to attach the trellis to the planter.

Mr_Warren_2

Drill small holes, screw stainless steel screews, with copper wire attach the frame you want.

BexInLondon

Thanks everyone! Inspired by the idea of suction hooks I went to Robert Dyas yesterday to find some. I didn't find any, but what I did find were some small plastic hooks attached with, basically, stickers! Have stuck them on and tied the trellis to them with garden wire, and it's all holding up fine now, despite very strong winds last night