Posted: 25/10/2014 at 12:02
Lavender can be cut either as soon as flowering finishes or in spring just before new growth starts. I've done both and they've been fine.
Clematis get pruned according to their variety which dictates their pruning group so you'l have to be more specific but I wouldn't be pruning any now before spring except to remove unsightly dead growth on obelisks and arches and to reduce wind resistance. I have Princess Diana, Silver moon, Sunset, Nelly Moser, Huldine, Alba Luxurians and flammula still flowering and will leave well alone till spring but Etoile Violette, Little Nell, Westerplatte, Omoshiro, Perle d'Azur, Arabella, Hendryetta, Star of India, Rahvarinne and Caerulea Luxurians have finished and started turning brown all over so they can be trimmed . My Red Robin and Red Ballon don't get trimmed at all as they are group 1s.
Gadioli need to be left to die down so the foliage can feed the corms for next year's flowers. If you're in a sheltered spot you may get away with leaving the corms in the ground but otherwise it's best to lift - once they've died down - and store them somewhere frost free till next spring.
Roses don't get pruned till Feb or March except to remove any long, whippy stems that may get caught by strong winds and rock the roots loose.
If, by Russian Ivy you mean Russian Vine, I personally would prune it now and dig it up and get rid as it's a thug that will spread and swamp other plants and there are far more attractive climbers for covering walls and fences.