Blue prince/princess hollies for a hedge

How much spacing is required to plant a blue prince/princess holly hedge? I have clay soil Planting along a foundation. Shady conditions, relatively dry Once obtained as a hedge can I use a hedge trimmer to get the shape required?…

Vine to climb up base of treehouse platform

I would like to plant a vine to grow up a trellis I will install along one side of a 7 ft treehouse platform. It faces North so not much sun with lots of tree canopy as well. Fast growing…