Boston Ivy: An Informative Introduction to a Common Climbing Plant

Boston ivy (Parthenocissus tricuspidata) is a perennial deciduous climbing vine in the genus Parthenocissus of the grape family (Vitaceae), also known in many places as Japanese ivy or wall-climbing ivy. It climbs walls, rocks or tree trunks mainly by means of tendrils on its stems; the tips of the tendrils bear adhesive discs, giving it very strong clinging ability. In summer its foliage is dense and emerald green, and after autumn begins the leaves turn red or orange-yellow, making it a common plant for vertical greening.

Commonly cultivated species include Boston ivy and Virginia creeper (Parthenocissus quinquefolia). The former's leaves are mostly three-lobed or composed of three leaflets, while the latter has palmately compound leaves, usually with five leaflets. Both are highly adaptable, cold-tolerant and drought-tolerant, and are not fussy about soil; they grow normally in shady, damp wall corners, on slopes and beside fences, and day-to-day care is relatively minimal.

In terms of use, Boston ivy is often planted on house exteriors, enclosure walls and slope-protection edges, and within a few years it can cover a fairly large wall surface. It can block strong summer sunlight, helps to some extent in lowering wall temperature, and can also trap dust and reduce noise, so it is widely used in courtyards and urban landscaping. Because it climbs and grows quickly, sufficient space should be reserved when planting, and regular pruning is needed to keep branches from blocking doors and windows or climbing onto power lines and eaves.

It should be noted that Boston ivy is often mistaken for ivy (Hedera helix). Although both are climbing plants, Boston ivy is a deciduous vine whose leaves drop in autumn and winter, whereas ivy is evergreen year-round, and their leaf shapes also differ noticeably, so the two can be told apart on this basis when buying or planting.