Tips for Creating a Mini Indoor Greenhouse: A Guide to Building and Maintaining an Indoor Garden


Creating a mini indoor greenhouse is a fun and rewarding project that allows you to bring the joy of gardening indoors. Whether you have a small space, limited outdoor access, or simply want to enjoy the benefits of fresh herbs and greens year-round, a mini-greenhouse is the perfect solution. With a little planning and some inexpensive supplies, you can create a mini-greenhouse that will provide the ideal growing conditions for your plants.

One of the most important elements of an indoor greenhouse is the container. It’s important to choose a container that is the right size for your plants and provides adequate drainage. Plastic bottles or containers work well and can be easily repurposed for this project. Once you have your container, be sure to fill it with a good quality potting soil or a mixture of potting soil and compost.

Another important aspect to consider when creating a mini-greenhouse is the location. Ideally, you want to place your greenhouse near a window that receives plenty of natural light. This will provide the plants with the necessary sunlight for growth. If you have limited natural light, you can also supplement with artificial lighting. LED grow lights are a popular choice for indoor gardening as they provide the right spectrum of light for plants.

To create a mini-greenhouse, you can use a shelf, cabinet, or even a built-in nook. If using a cabinet, you can secure transparent plastic sheets on the sides and top to create a sealed environment. This will help to trap in the heat and create a microclimate for your plants. If using a shelf, you can wrap transparent plastic sheets around the sides and top and secure them with tape. This will create a similar effect.

When it comes to gardening, timing is everything. Be sure to plan your planting calendar accordingly so that you can enjoy a continuous harvest. Start by germinating your seeds in a warm and moist environment until they sprout. Once they have sprouted, you can move them to the mini-greenhouse for further growth. Make sure to monitor the temperature and humidity levels in your mini-greenhouse to ensure optimal growing conditions.

Overall, creating a mini indoor greenhouse can be a fun and rewarding DIY project that allows you to enjoy the benefits of gardening all year round. Whether you have limited outdoor space, want to grow herbs and greens for cooking, or simply want to add some greenery to your home, a mini-greenhouse is a great option. With a little time and effort, you’ll soon be able to enjoy a thriving indoor garden.

We hope these tips and ideas have inspired you to try creating your very own mini indoor greenhouse. With just a few simple supplies and some time, you can create a beautiful and productive space for growing your favorite plants. Happy gardening!

6 Easy Way To Make A Mini Greenhouse

Here are 6 easy ways to make a mini greenhouse:

  1. Ikea Cabinets: Ikea cabinets are a popular and inexpensive option for creating mini greenhouses. Simply secure shelves inside the cabinets to hold your plants, and cut holes in the back for ventilation.
  2. Windows: If you have an old window frame lying around, you can repurpose it into a mini greenhouse. Just add shelves and a plastic cover to protect your plants from harsh weather conditions.
  3. DIY Terrarium: A terrarium can be a mini greenhouse for small plants. Use a glass container or jar and fill it with soil and plants. Place it in an area where it gets plenty of sunlight.
  4. Plastic Cups: For a quick and easy mini greenhouse, take plastic cups and cut the bottoms off. Place them over your plantings to create a protective dome.
  5. Duct Tape and Plastic: If you’re in a pinch, you can create a mini greenhouse using duct tape and clear plastic. Simply tape the plastic to a frame made from PVC pipes or wood to create an enclosed area for your plants.
  6. Seed Tray: Seed trays are perfect for germinating seeds indoors. They usually come with a clear plastic cover to create a mini greenhouse-like environment for your seeds.

Remember, the most important elements for a mini greenhouse are sunlight and watering. Make sure your plants get the right amount of both. With these easy DIY ideas, you’ll be able to create your very own mini greenhouse and enjoy growing your own plants all year round!

Photo by jolovesplants on Unsplash

1 Use Plastic Bottles

One of the most simple and inexpensive ways to create a mini indoor greenhouse is to use plastic bottles. This DIY project is perfect for those who like to recycle and repurpose materials.

You can start by collecting plastic bottles, like soda or water bottles, that you have lying around. Cut off the bottom of the bottle and remove the cap. If you have kiddos, this can be a fun project to do together!

Once you have your plastic bottles ready, you can start using them as mini-greenhouses. Simply plant your cuttings or seeds in cups or small pots. Then, cover each cup or pot with a plastic bottle by placing the bottle upside down over it. Make sure the bottle fits well over the cup or pot, creating a sealed environment.

This mini-greenhouse setup acts as a protective barrier, creating a warm and humid environment for your plants to grow in. It helps retain moisture and provides a stable temperature for germinating seeds or supporting the growth of young plants.

If you’re propagating plants that require higher humidity levels, like peperomia or tropical plants, using plastic bottles can be a great way to create the ideal conditions.

Another option is to create a DIY terrarium using plastic bottles. Cut a sheet of plastic to fit the size of the bottle. Place the sheet inside the bottle, creating a divider. Fill one side with soil and plant your greens or herbs. You can even add some decorations or small figurines to make it more visually appealing.

The other side of the bottle can be used to grow a different kind of plant or create a different environment. For example, you can try growing an avocado by placing the pit on the sheet, suspended in water. This way, you can observe the growth of the roots and leaves.

The plastic bottles act as mini-greenhouses, providing the necessary conditions for the growth of your plants. They trap heat and moisture, creating a microclimate that supports their development.

Overall, using plastic bottles to create a mini indoor greenhouse is a simple and budget-friendly way to start your indoor garden. Whether you’re germinating seeds, propagating cuttings, or growing small plants, this DIY project can help you provide the right conditions for successful plant growth.

2 Use a Plastic Container

When it comes to building a mini indoor greenhouse, using a plastic container can be a great option. Plastic containers are inexpensive, readily available, and easy to work with. You can even repurpose items like duct tape or plastic bottles to create a simple and affordable greenhouse.

One option is to use a plastic container such as an old storage bin or a clear plastic tote. This will provide you with a solid base for your greenhouse and help to create a microclimate for your plants. You can find plastic containers at stores like IKEA or your local home improvement store. Just make sure to choose a container that is large enough to accommodate your plants and allows for proper air circulation.

To start building your mini-greenhouse, you’ll need a few additional materials. Here’s a list of what you’ll need:

– Plastic container – Duct tape
– Plastic bottles – Clear plastic sheet
– White sheet or cabinet liner – Scissors or utility knife

Once you have gathered your materials, you can begin constructing your mini-greenhouse. Start by cutting a hole in the lid of the plastic container large enough to fit the plastic bottles. This will serve as the opening for your greenhouse. You can secure the plastic bottles in place using duct tape or any other type of adhesive. Make sure they are evenly spaced and secure.

Next, cut a sheet of clear plastic to fit over the opening of the container. This will act as the cover for your greenhouse and help trap heat and humidity. Secure the plastic sheet in place with duct tape or adhesive, making sure to create a tight seal. You can also use a white sheet or cabinet liner to reflect light and provide better insulation. Just tape it to the inside of the container.

Once your mini-greenhouse is built, place it in a sunny area indoors where it will receive plenty of light. This will help create a warm and controlled environment for your plants to thrive in. It’s important to keep an eye on the temperature inside the greenhouse and adjust accordingly.

Now, you’re ready to start growing your indoor garden. Use the plastic bottles to create individual planters or use them to hold water for watering your plants. The amount of water you use will depend on the specific needs of your plants, so make sure to research the proper watering techniques for each type of plant you have.

With these simple steps, you can easily build your own mini indoor greenhouse using a plastic container. Enjoy the benefits of growing plants indoors all year round and watch your garden thrive!

3 Use a Plastic Sheet

If you want to create a mini indoor greenhouse, using a plastic sheet is a simple and inexpensive way to do it. You can use clear plastic sheets or even repurpose a large plastic bag. This will help you create a controlled environment for your plants, ensuring they have the right amount of sunlight and humidity.

To use a plastic sheet, first, create a frame or structure for your mini greenhouse. This can be as complex or as simple as you like. You can use PVC pipes, wooden frames, or even repurpose old cabinets or shelves. Nicole from Jolovesplants hand-made a frame using PVC pipes and plastic sheets, as pictured above.

Once you have the frame in place, you can simply wrap the plastic sheet around it, securing it with white duct tape. Make sure to leave access points for watering and tending to your plants. If you want to have multiple shelves, create separate sections and wrap each one individually. You can also use plastic sheets to cover windows and create a greenhouse-like environment.

Using a plastic sheet also allows you to control the environment for specific plants, like avocado trees or herbs. If you’re creating a greenhouse for herbs, microgreens, or greens, using a plastic sheet can help provide the necessary humidity and temperature control.

There are plenty of plastic sheet options available, from simple versions you can find at IKEA to more complex greenhouse-grade sheets. Depending on the size and complexity of your indoor garden, you can use a plastic sheet that suits your needs and budget.

  • Use a plastic sheet to create a controlled environment for your indoor plants.
  • Create a frame or structure using PVC pipes or other materials.
  • Wrap the plastic sheet around the frame and secure it with duct tape.
  • Leave access points for watering and tending to your plants.
  • Consider using plastic sheets to cover windows and create a greenhouse-like environment.
  • Choose a plastic sheet that suits your needs and budget.

Using a plastic sheet in your indoor greenhouse project is a quick and simple way to create a controlled environment for your plants. It allows you to have a mini jungle right in your own home, taking advantage of natural gardening elements and creating a green and lush space.

✿ Read More: Gardening Tips and Advice.

Dr Heidi Parkes

By Dr Heidi Parkes

Senior Information Extension Officer QLD Dept of Agriculture & Fisheries.