I know diddley-squat about them, Vanessa

, but I did find this info on them, and some pics. Maybe you could use them to block off the wild neighbour's yard?

Or is that the neighbour's wild yard?
~ Ilex Glabra - Inkberry Holly~
Inkberry is a handsome evergreen Holly native throughout much of eastern North America. Its oval, spine-free foliage is medium to dark green and lustrous, and the berrylike fruits borne by female plants are, as the common name suggests, typically black. Inkberry has an upright, rounded, suckering habit and, depending on the size of the cultivar, can be used as a specimen against a foundation, grouped in a border, or massed for a natural look. Because it tolerates heavy pruning and shearing, it makes an excellent hedge. We rejuvenate our plants about every fourth or fifth year by pruning them hard in early spring, cutting within 1012in of the ground. Inkberry thrives in sun or shade and tolerates both moist and dry soil. It prefers acid soil but tolerates a higher pH than do most other Hollies. Plants are very hardythrough Zone 5 and into Zone 4but the foliage may burn in severe Zone 5 winters.
- Enviromentals Nursery
~Inkberry Holly Pics~
