SEVERAL YEARS AGO I acquired a small greenhouse, just 8.5 feet (2.6 m) long and 4.5 feet (1.4 m) wide that a friend had built and used for cactus. He no longer needed it and offered it to me while he built a huge walk-in greenhouse. I jumped at the chance and was giddy with delight. It was something I had dreamed about for years, but I wondered how would I convert this unorthodox greenhouse into something I could use year-round and make it work for what I wanted to achieve?