This list is for anyone who wants fresh seedlings without a fancy greenhouse budget. Renters, first-time growers and busy plant lovers, this one is for you.
You don’t need a backyard structure or a big check to start growing indoors. A shelf, a bin or even an old fish tank can do the job just fine!
Below you’ll find 19 setups using things you probably already have lying around. Some use dollar store finds.
Others repurpose furniture you were about to donate.
Each idea includes a quick look at what makes it work. Some ideas need a little building. Others come together in an afternoon, lol!
Skim through and pick whichever fits your space and your patience level. There’s no wrong place to start here, so grab your seed packets and let’s go!
Under each idea you’ll find the details that actually matter, plus a link to the full tutorial when there’s a build involved.
INDOOR GREENHOUSE CHEAP IDEAS
Dollar Store Shelf Greenhouse
We’re starting off with a dollar store shelf greenhouse. A wire shelf plus clear plastic sheeting is basically the whole shopping list here.
Read also: 19+ Genius Cheap Gardening Ideas That Transform Yards
Zip ties hold the plastic in place around the frame. This is the setup I’d copy first if I were starting from zero, haha!
Plastic Bin Mini Greenhouse
A clear plastic storage bin makes a surprisingly solid mini greenhouse. Flip the lid on top and you’ve got instant humidity for seed trays.
Poke a few holes for airflow so nothing gets moldy. Simple, cheap and it stacks neatly in a closet when you’re not using it.
Repurposed Window Frame Greenhouse
Old window frames headed for the curb make a charming little greenhouse cabinet. Hinge a few together and you’ve got doors that actually swing open.
This one takes more patience than most on this list. The payoff is a piece that looks like it belongs in a garden magazine.
DIY PVC Pipe Greenhouse
PVC pipe bends into an arched frame in about an hour. Drape greenhouse plastic over the top and secure the edges with clamps.
Read also: 20+ Cheap Greenhouse Plans That Actually Work
It folds down flat when the season ends, which is a huge plus for small apartments. No shame in a greenhouse that packs away!
Mason Jar Herb Greenhouse
Mason jars turn a windowsill into a tiny herb greenhouse. Each jar holds its own cutting or seedling, so nothing gets crowded.
Line them up on a tray and rotate them for even light. Basil and mint root in these faster than you’d expect.
Ladder Shelf Plant Greenhouse
An old ladder shelf becomes a tiered plant greenhouse with a plastic cover draped over the frame. Each rung holds a different tray of seedlings.
Read also: 18+ Quick Cheap Greenhouse Ideas That Actually Work
This is the setup for anyone who wants height instead of floor space. It looks intentional even when it’s thrown together fast, lol!
Recycled Bottle Terrarium Greenhouse
Cut a plastic bottle in half and you’ve got a tiny terrarium greenhouse for a single cutting. Line up a dozen along a windowsill and the effect is honestly kind of stunning.
These work great for starting cuttings before they graduate to a full pot.
Closet Turned Grow Room
Got an unused closet? Turn it into a full grow room with shelving and a curtain of plastic sheeting.
Add a small fan for airflow so things don’t get stuffy in there. This works especially well for anyone growing through winter with limited window light.
Wire Rack Greenhouse Cover
A basic wire rack from the garage becomes a greenhouse with a zip-up cover thrown over the frame. Some covers even come with clear vinyl windows built in.
This is one of the fastest setups to assemble. No tools required, which is always a win in my book.
Cardboard Box Seedling Greenhouse
A sturdy cardboard box lined with plastic wrap makes a surprisingly good seedling greenhouse. Cut a flap in the lid so you can check on things without fully opening it.
It won’t last all season, but it gets seedlings through their first fragile weeks just fine.
Under Bed Grow Space
The space under a bed is prime real estate for grow lights and trays. Slide trays in and out easily, and the darkness around the setup actually helps some seedlings root faster.
Not glamorous, but wildly practical for small bedrooms doubling as plant rooms.
Fish Tank Indoor Greenhouse
An old fish tank makes an excellent enclosed greenhouse for humidity-loving plants. The glass walls trap moisture the way a real greenhouse does.
Add a layer of gravel at the bottom for drainage. This is a great second life for a tank that’s no longer housing fish.
Clear Umbrella Greenhouse Dome
A clear umbrella, opened upside down, makes a surprisingly good greenhouse dome for a single potted plant. It’s quirky, sure, but it works!
Prop it over a pot near a bright window and watch the condensation build. Who doesn’t love a weird little hack like this, am I right?
Budget Grow Light Shelf
A budget grow light shelf is basically a metal shelving unit with clip-on LED lights attached to each level. Big box stores sell the lights cheap.
Set them on a timer and forget about them for weeks. This setup scales easily if your plant collection keeps growing, haha!
Salad Container Seed Starter
Those clear plastic salad containers from the grocery store make near-perfect seed starters. The hinged lid traps humidity just like a tiny greenhouse dome.
Poke a few drainage holes in the bottom first. Free, disposable and honestly better than some products sold specifically for this.
Window Sill Greenhouse Box
A window sill greenhouse box is exactly what it sounds like. Build a shallow box that fits your sill, add a clear lid and tuck seed trays inside.
This keeps the mess contained and the plants happy in direct light. A tidy little setup for anyone short on counter space.
Thrifted Cabinet Greenhouse Makeover
A thrifted cabinet with the doors swapped for glass panels makes a genuinely gorgeous greenhouse piece. Paint it, add shelves and you’ve got a plant cabinet with real personality.
This one takes the most effort on this list. It also gets the most compliments once it’s done.
Hanging Shoe Organizer Garden
A hanging shoe organizer turns a wall or door into a vertical garden greenhouse. Each pocket holds a small pot, so dozens of seedlings fit in almost no floor space.
Clear vinyl pockets work best since you can see the roots and soil moisture at a glance.
Plastic Wrap Tray Greenhouse
Last but definitely not least, we have the plastic wrap tray greenhouse. Stretch wrap tightly over a seed tray and you’ve got instant humidity control for next to nothing.
Poke a few slits once seedlings sprout so they can breathe. This might be the cheapest idea on the entire list, and it still works like a charm!
Just a little note - some of the links on here may be affiliate links, which means I might earn a small commission if you decide to shop through them (at no extra cost to you!). I only post content which I'm truly enthusiastic about and would suggest to others.
And as you know, I seriously love seeing your takes on the looks and ideas on here - that means the world to me! If you recreate something, please share it here in the comments or feel free to send me a pic. I'm always excited to meet y'all! ✨🤍
Xoxo Camille