Chapter 10 Ornamental Plants in the Landscape 257 Copyright Goodheart-Willcox Co., Inc. • Twiners. Vines with a twining growth habit use their leaves or stems to wrap around a support structure. Twiners, unlike tendrils which use a modifi ed leaf, wrap existing leaves or stems around the structure. Twining vines include clematis, wisteria, honeysuckle, and pole beans, Figure 10-21B. Twiners require a heavy-duty support structure. • Scramblers. Scramblers are vines with very long, strong, fl exible stems that must be physically attached to a climbing structure. Stems of scramblers often have thorns, Figure 10-21C. Climbing roses are scramblers. These vines may need a strong support structure. • Clingers. These vines attach to structures with their adhesive pads and aerial roots. These vines can climb virtually on any surface. Boston ivy and Virginia creeper are common vines that have adhesive pads, Figure 10-21D. • Climbing stem roots. Vines that climb using their stems and root structures are referred to as climbing or clinging stem roots. These root structures can damage paint and mortar, especially if they are pulled off the structure. These vines can climb on virtually any surface. Common vines with stem roots include English ivy and wintergreen euonymus, Figure 10-21E. Although vines are a relatively small category of ornamental plants, they provide material that is unique and aesthetically pleasing. A pas- sionfl ower (Passiflora incarnate), for example, has unique fl owers that automatically make the vine a focal point, Figure 10-22. Vines such as honeysuckle (Lonicera spp.), provide a sweet fragrance that may draw the visitor to a specifi c location. Grape vines (Vitis vinifera) can be used to incorporate edibles into the landscape. Vines may become aggressive kariphoto/Shutterstock.com Figure 10-22. Passionflower is a vine with a very distinct flower and rather bland foliage. It is important to remember that plants are selected for a variety of reasons. The site along with the demands of the client will dictate selection of plant material. Christopher D. Hart Zelijko Zizak Photography/ Shutterstock.com PeingjaiChiangmai/Shutterstock.com mizy/Shutterstock.com Figure 10-21. Vines climb in different ways. It is extremely important to match the vine to the climbing structure to ensure the vine will climb the structure and, in some cases, not become too heavy for the structure. A—Tendril. B—Twiner (honeysuckle). C—Scrambler (roses). D—Boston ivy. E—English ivy. Jorge Salcedo/Shutterstock.com Terry J Taylor/Shutterstock.com C A D B E