If you want colour on and off permanantly then Honeysuckle is your best bet
or some of the annual climbers like sweet peas, nasturtains etc would do for
this year while other perenial climbers get established

Clematis Montana would pretty quickly break the trellis
Clematis Armandi is evergreen and soon gets going but only flowers in March
Russian Vine or Mile a minute you would soon regret planting
Winter Jasmine though not really a climber does soon establish and can be
trained to cover the trellis but again only flowers in winter

"Scott Mills" wrote in message
...
Hi,

I've just put up 3 6x6' trellis pannels and would like to now try to cover
it! What is the fastest growing climber that is pretty but must be
rampent.

we have thought about ivy, but are there any other suggestions, I'd like
some colour there.

Cheers
Scott