Actually, a brick bottom cold frame.but yes, a sort of greenhouse. "You don't always need to build a big green house, why not try a mini greenhouse made from recycled bricks & windows"
21 DIY Greenhouses with Great Tutorials: Ultimate collection of THE BEST tutorials on how to build amazing DIY greenhouses, hoop tunnels and cold frames! Lots of inspirations to get you started! - A P (Diy Ideas Outdoor)
Plantando e colhendo batatinhas em casa, no vaso. Take one plastic planter, cut out the sides and place in a second planter. Makes for easy harvesting.