One such option is the Costway Portable Wooden Greenhouse — and it's on sale at Walmart right now. Normally, this unique gardening structure is $259, but you can currently score it for just $140.

The idea of a semi-portable greenhouse that you build yourself in ... Users generally like it for small house plants and consider the pricing reasonable for its relatively compact size.

Well, we have good news if you're in that boat: the Costway Garden Portable Wooden Greenhouse has rave reviews and is on sale for just $140. Shoppers said they "love this little structure," and ...