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choosing your climber There are two main types of climbers: clingers and those that need support. Clingers, such as ivy, have suckers – aerial or adventitious roots – that stick to surfaces. Don’t plant these against old, fragile brick or stone walls or any timber structures, as the suckers get into crevices and undermine the structure. Help other climbers reach for the skies with ties, wire, mesh, trellises, pergolas or trees. Other factors in choosing climbers are whether you want them evergreen or deciduous, for flowers or foliage, for sun or shade, and your climate and soil type.