This is a fascinating plant. I got a pair of 2-gallon plants at Broken Arrow Nursery. They should form big rounded mounds of glossy green foliage along the front walk.
Adult ivy is exactly what it sounds like -- the mature version of regular old English ivy.
at Wave Hill in October 2013 |
When ivy reaches the top of whatever it is climbing and has nowhere further to go, it matures. The adult ivy changes genetically. The leaves lose their lobed points and become rounded. The vine stops being a vine and the topmost part of the plant becomes shrubby and dense.
If you take a cutting from the shrubby mature part of the ivy, it will keep its altered genetic characteristics -- you get another mature shrub form of the plant.
But if you plant the seeds from the mature flowering ivy, you get an immature vine, and you are back to having rampant vining English ivy with its distinctive three-lobed leaves.