Greenhouses are making a marked comeback in recent years, and for more than simply growing. While tending and nurturing vulnerable seedlings is certainly part of the purpose, it’s fascinating how much more they have come to represent. I chatted with two women recently, both of whom designed and built custom greenhouses as extensions of their gardens. While they both affirmed their love for growing plants of every variety, they also shared their hearts on the abstract, immeasurable growth that happens in these sacred spaces…