OK. Now for a ridiculous question. Has anyone in a colder climate tried growing an avocado in their greenhouse? How cold tolerant are they?
Just for fun my mother has started several in her kitchen. Four toothpicks stuck in the seed and suspended in a glass of water. One she potted up, grew for several years in her sun room. Only reached about three feet tall before it parished.
I haven't tried avocado, but there was a big avocado tree growing outside in the central FL neighborhood where I grew up, so at least some varieties are relatively cold tolerant. That one was a big, smooth skinned variety, but I never knew the cultivar name. Given the size of that tree, I think I'd research dwarf cultivars for the greenhouse.
As an aside, has anyone grown coffee plants in their greenhouse?