17 Mini Greenhouses From Amazon to Protect Your Plants —Starting at $20

If space is limited, this vertical greenhouse takes up less space on your deck or patio. It also comes with a eucalyptus wood shelving unit, so you can stack small plants for maximum use of the interior space. The shelving unit also can be used separately from the greenhouse in warmer weather when you no longer need greenhouse protection.

If you need a larger space, this walk-in style is 76 inches tall so you can move plants in and out without bumping your head. A large zippered roll-up door allows you to open the entire greenhouse up during the day, then close it again at night to keep your plants snug.

If you’re starting seeds but don’t have a ton of room, this tiny greenhouse sits right on your windowsill to capture light and heat. The plastic dome captures humidity, too, so your baby plants get a good start in life. It’s also reusable for next season’s seed starting.

Need to shelter just one plant? This smart design, with magnetic closures, allows you to protect just one plant--or you can stack multiple plants for a one-of-a-kind display. Reviewers say these greenhouses hold humidity well, so they’re ideal for finicky plants such as ferns and other high-maintenance tropical houseplants.

If you’re looking for a small greenhouse or terrarium to use indoors, this pretty option provides plenty of space for growing your favorite moisture-loving plants such as ferns. With its traditional styling, it makes a pretty addition for displaying plants indoors-though you could use it outdoors, too, in a sheltered location.

If you’re ready to upgrade from a vinyl-sided greenhouse--but not yet ready to spring for a pricey glass greenhouse!-- this cute greenhouse boasts an aluminum frame, polycarbonate windows, a lockable door and vented roof. It also comes with a thermometer/hygrometer to keep track of the inside temperature and humidity level. Reviewers say it’s a great value for the price, though it can take some time to assemble.

If you need tons of space, this high tunnel-style greenhouse is huge! Set up your own tables or benches inside to hold row after row of planters and seed starting pots. It features 8 roll-up screened windows for plenty of ventilation. Reviewers say it has held up well for more than two seasons, though it does take time and patience to install.

This mini dome style greenhouse has a zippered roll-up door, so you can easily swap plants in and out for quick coverage and protection. It’s not huge, but at six feet tall, there’s plenty of space for one large potted plant or several medium-sized ones.

This greenhouse can be used by itself or to top a raised bed garden. It requires no tools to assemble, and reviewers say it’s quick to put together. Two double-zippered doors roll up and out of the way to allow for ventilation and air circulation on warm days.

If you don’t have a ton of floor space on your deck or patio, this mini greenhouse offers plenty of room with a small footprint. It's around six feet tall but only 27-by-19 inches wide and deep. It's lightweight and easy to move, and each removable shelf can hold up to 23 pounds.

This tabletop mini greenhouse with a grow light can be used to start seedlings in spring. But it’s also useful for houseplants that need a little more heat and warmth such as cacti.

This tent-like mini greenhouse is large enough to fit a small table inside so you can double your storage space. It can be used to cover plants during a late frost by simply lifting it over the plants and securing it in place with the included stakes.

Lean-to greenhouses are convenient if you want to harness the radiant heat coming off your house. This one has a pop-up frame like a tent, but you adjust the height. Two doors and a large window provide ventilation, and you can anchor it to the wall or use the lawn stakes to keep it in place.

If you're looking for an all-in-one kit, this raised garden bed is made of galvanized metal with a PVC greenhouse topper. The bed is a spacious 6 feet long x 3 feet wide x 1 foot tall, so there’s plenty of room for several tomato and pepper plants, as well as a few greens such as arugula and lettuce.

These individual pop-up greenhouses, which are 31 inches tall, are easy to place over each separate plant. They work well to protect heat lovers, such as tomatoes and peppers, from a late spring frost or freeze. They’re lightweight enough to take off and on during the crazy ups-and-downs of spring temperatures.