Growing Microgreens in Egg Cartons: Repurposing for Green Growth

HomeGrowingGrowing Microgreens in Egg Cartons: Repurposing for Green Growth

Growing microgreens in egg cartons: Repurpose your empty egg cartons as small-scale microgreen growing containers. Cut the lid off the carton and use the bottom part as the planting tray. Poke small drainage holes at the bottom for excess water to escape. Fill each cell with a seed-starting mix, sprinkle the seeds on top, and lightly press them into the soil. Water gently and keep the carton in a well-lit area for germination and growth.

Why Use Egg Cartons for Growing Microgreens?

Making the most of what’s already available, egg cartons offer a great way to bring your microgreen dreams to life! They’re the perfect size for growing small-scale microgreens. A single egg carton can hold up to 12 individual compartments, which is just enough space for soil and seedlings without compromising on root growth.

Their design offers drainage holes in each compartment, allowing you to regulate water usage depending on the type of microgreen being grown. This also helps with preventing over-watering or soil erosion.

Egg cartons provide excellent air circulation due to their open top design that allows more oxygen to reach the plant roots during photosynthesis. And since they’re made from biodegradable material like paperboard or cardboard, they make a great eco-friendly alternative for container gardening. Egg cartons also require little maintenance compared to other containers since they don’t need frequent repotting and can be reused until worn out.

Overall, using egg cartons as containers for growing microgreens is an ideal option because of their compact size and ease of use – not only do they save money, but they’re also good for the environment! They provide numerous benefits such as proper drainage and airflow that allow you to grow healthy plants with minimal effort.

Preparing Egg Cartons for Growing Microgreens

Preparing egg cartons for growing microgreens is an easy process. First, make sure the egg carton is clean and free of debris. To do this, give it a light scrub with dish soap and warm water.

Next, sanitize the carton using bleach or hydrogen peroxide solution.

Finally, use a sharp object like a knife or scissors to create drainage holes in the bottom of each cup. This is important for proper water flow when watering your microgreens.

Don’t forget to double check that each complete sentence is on its own line with a double new line after.


Cleaning egg cartons for microgreen growing is important, so don’t skimp on it. It’s important to make sure the cartons are thoroughly cleaned before planting to ensure optimal soil quality and seed saving.

Here are some tips for cleaning your egg cartons:

  • First, use a damp cloth or sponge with warm water and dish soap to remove any dirt or debris trapped inside the containers.
  • Next, rinse the containers out with clean water several times to make sure all of the soap has been removed.
  • Finally, let the containers air dry or dry them using a soft towel before proceeding with planting your microgreens.
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Sanitizing your upcycled containers is essential for small-scale microgreen cultivation. Don’t neglect it! You can easily sanitize your egg cartons and other recycled containers prior to planting by using a mixture of one part bleach to nine parts water. Ensure that all surfaces are properly submerged for at least 10 minutes in the solution before allowing them to air dry.

This will help to reduce any existing pathogens or pests that may be on the surface. It will also help ensure that there is no carryover from previous fertilizing techniques. Additionally, it’s important to practice good pest management throughout the growing process. Regularly check for any infestations and take action immediately if necessary.

Taking these steps will help guarantee a successful harvest of delicious microgreens!

Draining Holes

Making sure to add draining holes to your upcycled containers is an important step in ensuring successful microgreen cultivation! Draining holes not only allow excess water from the soil to escape, but they also help with controlling pests. By using soil drainage, you can reduce the chance of moisture-loving insects like aphids and whiteflies from taking over your microgreen crop.

Furthermore, draining holes can help keep the soil aerated, which is essential for healthy root growth. When creating your own upcycled containers out of egg cartons, make sure to poke several small holes on the bottom and sides. This will ensure that the soil has proper drainage and air circulation.

Additionally, it’s a good idea to line the bottom of each container with a thin layer of cheesecloth or other porous material before adding soil–this will help prevent any extra water from pooling in between the cracks. With these simple steps in place, you’ll be well on your way towards growing healthy and delicious microgreens!

Planting Microgreens in Egg Cartons

Choosing the right seed for planting microgreens in egg cartons is essential for successful growth. You’ll want to pick smaller seeds that will fit easily into the compartments and be able to spread out evenly.

Planting technique is also important—the seeds should be spread thinly and lightly pressed down onto the soil surface, followed by a light watering.

Finally, keep your microgreens watered throughout their growing process; you don’t want them to dry out!

Seed Selection

When it comes to selecting the perfect seeds for your egg carton microgreen garden, it’s almost like picking out gems from a treasure trove. There are lots of seed sources available, so you need to be sure you’re getting the best quality seeds with high germination rates.

Start by researching local nurseries or specialty stores for certified organic and non-GMO varieties. You can also purchase seeds online from reputable companies that offer the highest quality products and guarantee their germination rates. Regardless of where you get them, make sure they are fresh and free from disease or pests before planting in your egg cartons.

Be sure to read up on each variety as well, so that you know which ones will work best for your particular microgreen garden setup. With careful selection of seeds, you can ensure that your egg carton garden is filled with beautiful and nutritious microgreens!

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Planting Technique

You’ll want to make sure you’re planting your seeds properly in order to get the most out of your upcycled egg carton containers.

Before planting, it’s important to prepare the soil for optimal growth. Choose a light potting soil and mix it with a small amount of compost or fertilizer. This will give your microgreens the nutrients they need to grow quickly and healthily.

Next, choose an appropriate container for your seedlings; while egg cartons can work well for some varieties, larger plants may require more space and depth than what an egg carton can provide.

Once you’ve selected an appropriate container, fill it with the soil mixture and plant each seed about 1/8 inch deep into the soil. Cover them lightly with additional potting mix or vermiculite and water thoroughly until damp but not soggy.

Place the containers in a warm location that receives adequate sunlight so that your microgreens can start sprouting in no time!


Once your plants have been planted, it’s important to give them the right amount of water. Watering too much can lead to root rot and other issues, while not watering enough can stunt their growth.

For example, if you’re growing a variety of microgreens in upcycled egg cartons on a small scale, make sure to check the soil daily and water when necessary. To ensure that your microgreens get just the right amount of moisture:

  1. Monitor moisture levels for different types of soil – light sandy soils may need more frequent watering than heavier clay soils;
  2. Water in short bursts with just enough water to moisten the top layer of soil;
  3. And avoid over-watering, as this can prevent oxygen from reaching the roots and cause diseases like mildew or root rot.

By following these steps, you’ll be able to maintain optimal moisture levels for your microgreen plants. This will allow them to thrive in their new home – an upcycled egg carton!

Caring for Microgreens in Egg Cartons

Caring for microgreens in egg cartons is easy!

To ensure that your plants flourish, you’ll need to make sure they get plenty of light and are kept at the right temperature. Aim for 16-20 hours of indirect or filtered sunlight each day, as too much direct sunlight can cause them to become spindly and weak.

Keep temperatures between 55°F – 80°F (13°C – 27°C) so your plants will be happy and healthy.

Light Requirements

Lighting your microgreens is critical to their success – don’t let them stay in the dark! While the soil quality and pest control are important for growing microgreens in egg cartons, providing the right amount of light is also essential.

Generally speaking, microgreens need at least six hours of direct sunlight each day. However, when growing indoors or in areas with limited natural lighting, you’ll want to supplement with grow lights. The type of grow lights used will depend on the size of the area where you intend to grow your microgreens.

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For example, if you’re using a small egg carton as a container, then LED bulbs or CFLs can provide enough light for your plants. If you have more space and resources available for larger containers, then high intensity discharge (HID) lamps may be a better option.

Additionally, make sure that all parts of your container receive equal amounts of light throughout the day by rotating it every few hours.

Finally, it’s important to note that too much light can be just as damaging as not enough; so monitor your plants closely and adjust accordingly if needed. In order to get the most out of your egg carton-grown microgreens and ensure they thrive under proper lighting conditions, experiment with different types of lamps and distances until you find what works best for your setup!


Now that you understand the importance of light requirements for growing microgreens in egg cartons, it’s also important to consider temperature control. Seed spacing and temperature are two key factors when it comes to successfully growing microgreens in egg cartons.

Temperature affects the growth rate of your microgreen plants, so it’s essential to ensure that they receive adequate warmth without overheating. Proper temperature control can be achieved by placing your egg carton near a window or other warm spot in your home, or creating a makeshift greenhouse with plastic wrap or clear lid from another container.

Additionally, keep in mind not to overcrowd the seeds as this can prevent airflow and cause heat buildup. By ensuring proper seed spacing and temperature control, you’ll be able to create an ideal environment for your microgreen plants to thrive!

Harvesting Microgreens from Egg Cartons

Harvesting microgreens from egg cartons can be a rewarding experience; in fact, some gardeners report harvesting up to 10 times more than what they planted!

Microgreens are usually ready for harvest between 7-14 days after sowing the seeds. There are several different techniques that can be used to harvest microgreens but it’s important to ensure that you’re meeting the nutrient requirements of the plants.

Here’s a 4-point list of steps to follow when harvesting microgreens from egg cartons:

  1. Wait until the plants have grown two true leaves before harvesting.
  2. Using scissors or a sharp knife, trim just above soil level and avoid cutting too close as this could damage the roots.
  3. Collect and rinse harvested microgreens with clean water and pat dry with a paper towel if desired.
  4. Place in an airtight container and store in the refrigerator for up to 1 week or until ready to use.

It’s best not to overharvest as this can affect the growth of new plants, so only take what you need at any one time.

After harvesting, your egg carton can be reused multiple times by adding fresh soil and refilling with new seeds for another round of growing!

Kathy Turner
Kathy Turner
Kathy Turner is the founder of, a popular blog dedicated to helping people become master microgreen growers. Kathy is passionate about helping others learn how to grow the healthiest, most nutrient-rich microgreens. She believes that with the right knowledge and resources, anyone can become a successful microgreen grower. Learn more about Kathy by viewing her full Author Profile.

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