Plant Type, Taxonomy for Boston Ivy
Characteristics of This Vine
In spring, the new leaves of Boston ivy are reddish.
The leaves typically turn green in summer, before reverting to a reddish color in fall. The plants produce inconspicuous flowers, yielding to clusters of dark blue berries. The vine length of mature plants may reach 50 feet or more.
Planting Zones, Sun and Soil Requirements for Growing Boston Ivy
Uses in Landscaping, Care Tips
These plants are vigorous growers. Prune the vines once each year (in late winter), so as to check the rapid growth.
Simply prune away any growth that is out of place (that is, either vines that are sticking out in an unsightly way or vines that have grown beyond the territory that you want them to cover). The vines respond well to pruning, so have no fear!
While fertilizing is often unnecessary, some growers apply a fertilizer high in phosphorus (the middle number in the NPK sequence) at planting time to encourage root development.
An all-purpose fertilizer would be fine for any fertilizing that you feel you need to do after that.
Boston Ivy vs. Virginia Creeper vs. English Ivy -- Identification Tips
Boston ivy is related to another vine, Virginia creeper (Parthenocissus quinquefolia). For identification purposes, note that Virginia creeper's leaf is a compound leaf, composed of five leaflets. Boston ivy's leaf may be compound on young plants but, in such cases, it will display three leaflets. Once mature, Boston ivy bears a simple, not a compound leaf. The vine is also sometimes confused with English ivy (Hedera helix) by beginning gardeners, but the two plants are not related; moreover, English ivy is evergreen, while Boston ivy is not. Plants in the genus, Hedera are true ivies. Others may have common names that contain that word (Boston ivy and the dreaded poison ivy being examples), but they are not real ivies.
Origin of the Latin (Scientific, Botanical) Name
The Latinized Greek name for Boston ivy is something of a misnomer. Partheno- means "virgin" (as in "Virginia") and cissus translates as "ivy." But while its relative, Virginia creeper, is, indeed, native to Virginia, Boston ivy is of Far Eastern origin.
Meanwhile, the specific epithet, tricuspidata, refers to the mature leaves of Boston Ivy: The leaves, while not compound, do have three distinct lobes.
Warnings About Growing Boston Ivy
If you wish to allow Boston ivy to scale the walls of any buildings, make sure first that you desire it as a permanent fixture. Once the vine gets a toehold, it is difficult to remove it from walls, so tightly do the holdfasts at the end of its tendrils hold it on the supporting structure. You could do damage to a wall in your attempts to rid it of entrenched Boston ivy. It is better to train the vine to grow on trellises and similar structures (see above) unless you are sure that you want it as permanent "siding" on your wall.
Nor should you allow Boston ivy to climb trees that you care about: The shade cast by the vines will interfere with a tree's photosynthesis, thereby depriving it of nutrients.