Many of us have seen impressive, enormous agave specimens at botanic gardens. Their contribution to architectural interest is undeniable. Here on the East Coast, they also create a spectacle. They look like nothing else we are accustomed to seeing here. It’s no wonder many of us fall in love and succumb to a relationship with an agave. I didn’t think it through when we bought our first agaves about 8 years ago. They were small, cute, and not too tricky to manage if you could convince your more physically able partner to help you manipulate them. In the northeast, that means moving them at least twice a year with the seasons, not to mention re-potting.…