It makes sense. In May when I selected my window box flowers, I was STARVED for color.
In the right window, I have a clematis vine that has survived four years in that small container.
Root pruning this plant each spring prevented the vine from becoming root bound and choking itself to death.
If a root system is naturally larger than the container it lives in, root pruning is necessary.
It's also important in this case because I like to plant annuals in the other half of the box.
Things are tight but it's fine for these kinds of plantings. I will be changing it in a few weeks to the autumn style.
I'm thinking about mounting larger boxes. It would be quite a handsome addition to the facade of my otherwise blah building front.
Some beautiful french iron work perhaps?

We shall see.

