How to Grow Microgreens in a Tray? Container Gardening Guide

HomeGrowingHow to Grow Microgreens in a Tray? Container Gardening Guide

Growing microgreens in a tray requires the proper technique. Sow the seeds evenly on a tray filled with a well-draining growing medium. Water the seeds gently but adequately, ensuring the medium stays moist but not waterlogged. Provide ample light, either from sunlight or grow lights, and watch the microgreens flourish.

Gather Your Supplies

You’ll need a few supplies to get started, so gather your tray, seeds, and watering can – it won’t take long!

First and foremost, you need to source your seeds. Make sure that the microgreen seeds are of high quality as they’ll determine the success of your crop.

You should also consider the soil quality you’ll be using for the microgreens; organic soil is best since it contains fewer toxins and more nutrients than conventional soils.

For the tray, look for one that’s shallow with good drainage holes in order to prevent waterlogging and fungal growth. Additionally, if your tray has a lid, this helps protect young seedlings from pests or extreme weather conditions.

Finally, make sure you have a watering can with a fine nozzle so that you can evenly water all parts of the tray without disturbing newly planted seeds.

With these materials in hand, you’re ready to begin growing your microgreens!

Prepare the Tray

To prepare the tray for growing microgreens, you’ll need to add soil and water it.

Start by filling the tray with a mixture of potting soil and compost. Use your hands or a trowel to distribute it evenly throughout the tray.

Once that’s done, give the soil a generous watering so that it’s moist all the way through.

Now you’re ready for sowing seeds!

Add Soil

Add soil to the tray, encouraging your microgreens’ roots to take hold and thrive. Potting mix is ideal for microgreens, as it has a light texture that allows for air and water penetration.

Using a spoon or scoop, add enough potting mix to the tray so that when compressed down, it reaches a depth of 1/2-1 inch. Seeds need to be planted at least twice as deep as their diameter; so if the seeds are small, plant them 1/4 inch deep in the soil. Gently press down on the soil after sowing to ensure good contact with the seeds and provide even germination.

Once you’ve added soil, fluff up the top layer with your fingers and you’re ready for sowing!

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Water the Soil

Once your soil is in place, it’s time to give it a thorough watering! This will help the soil settle and ensure that it has adequate nutrition for your microgreens.

The best way to water the soil is by giving it a deep soak and then allowing it to dry out before repeating this process. Here are some tips for establishing a successful watering schedule:

  • Make sure you water deeply but infrequently – this will encourage deep root growth and guard against over-watering.
  • Check the moisture level of your soil regularly – if the top layer feels dry, then it’s time to water again.
  • Water consistently – keeping an even watering schedule will help keep your microgreens healthy.
  • Use room temperature or warm water – cold water can shock your plants and stunt their growth.

By following these guidelines, you’ll be able to provide optimal nutrition for your microgreens as they grow in their tray environment. With adequate light, warmth, and consistent care, you’ll soon have a thriving crop of delicious microgreens!

Sow the Seeds

Sprinkle the seeds evenly across the tray to ensure a successful microgreen harvest. Timing is everything when it comes to growing microgreens, so make sure you sow your seeds in a timely fashion.

The type of soil used can also affect how well your microgreens grow. Make sure you’re using a light and fluffy soil that allows for good drainage and doesn’t contain any clumps or rocks. When sowing the seeds, use only a thin layer on top of your soil – this helps to create an even spread of seedlings and prevents overcrowding.

Once you’ve sown the seeds, give them plenty of water, but don’t overwater as this can lead to root rot or fungus growth in your microgreens. It’s best to mist them lightly with water every few days rather than drenching them all at once.

You can also cover your tray with plastic wrap during germination, which will help keep moisture in while allowing some airflow through as well. This will help speed up the process by preventing dehydration and keeping temperatures consistent.

Make sure not to neglect light when growing microgreens – they need it just like any other plant! Place your tray near a window where it’ll get direct sunlight for several hours each day if possible. If not, then consider investing in some artificial lighting such as LED lights that provide adequate lighting without generating too much heat or consuming too much energy.

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Your microgreen tray should be checked daily for signs of growth – roots beginning to form, young leaves starting to emerge from the ground – these are all good indicators that things are going right! Be patient though; sometimes sprouting may take longer than expected due to environmental factors such as temperature fluctuations or inadequate light levels.

With proper care and attention though, you’ll be able to enjoy fresh homegrown microgreens soon enough!

Provide Light and Water

Now that you’ve sowed the seeds, it’s important to provide light and water to your microgreens. Water helps keep the soil moist and ensures proper seed germination. The amount of water needed depends on how dry your soil is, so check regularly and add more as necessary.

Microgreens need at least 8 hours of bright light per day. If you can’t provide this much natural light, consider investing in artificial growing lights. These lights will give your plants the intensity they need for healthy growth.

It’s also important to make sure your plants are getting enough nutrition from the soil they’re planted in. You can use a fertilizer with high levels of nitrogen or mix compost into the soil for additional nutrients.

Finally, monitor your plants closely during their growth period since every species may require different amounts of light and water depending on their individual needs. Keep an eye out for any signs of deficiencies or problems such as wilting or discoloration – if these symptoms arise, adjust your watering schedule accordingly and move them closer or further away from the source of light if necessary.

Monitor the Growth

Carefully observe the progress of your microgreens to ensure they’re developing optimally. Pay close attention to both soil quality and light conditions as they can greatly affect the growth of your microgreens.

Check the soil moisture daily, ensuring it’s not too wet or too dry. If it’s dry, you may need to water lightly. Also, make sure the light is sufficient for your plants; depending on the type of plant, this could mean providing direct sunlight or indirect light from a window.

If you notice some areas in the tray are growing faster than others, thin out those sections by carefully removing some sprouts and leaving others with more room to grow. This will help create evenness throughout the tray without overcrowding any one area.

Additionally, keep an eye out for any signs of disease or pests, such as yellowing leaves or insects crawling around in the soil. If either of these occurs, take action immediately to prevent further damage to your plants.

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To maximize growth potential, consider adding a fertilizer with micronutrients that’ll give your plants an extra boost during their development stage. Make sure not to over-fertilize as it can cause harm instead of helping them flourish!

Furthermore, if you’re growing indoors, make sure there’s enough airflow so that mold doesn’t form on the soil due to excessive humidity levels within a closed environment.

Finally, monitor regularly for signs of maturity such as changes in color and texture. When these appear, it’s time for harvest! After harvesting your microgreens, store them away in an airtight container until ready for use in recipes or meal preparations!

Harvest Your Microgreens

Once your microgreens have reached maturity, it’s time to harvest them! There are a few harvesting methods you can use depending on what type of microgreen you are growing.

For larger microgreens like kale or chard, you can cut the plants at soil level using scissors. For smaller greens like radish or mustard, simply pinch off the leaves from the stem with your fingers. Make sure not to remove too much of the stem as this will encourage more growth.

When storing your harvested microgreens, make sure they stay dry and cool until you’re ready to eat them. Microgreens can be stored in an airtight container or wrapped in damp paper towels and placed in a plastic bag for up to five days in the refrigerator. To extend their shelf life even further, you can also freeze them for up to two months by blanching them first in boiling water for a few seconds before draining and freezing them in ice cube trays.

You’ll know that your microgreens are ready to eat when they have achieved their fully mature size and color. Keep an eye out for any yellowing or wilting of the leaves which indicates that they may not be fresh anymore and should be discarded instead of eaten.

Finally, always wash your microgreens thoroughly before eating as some may contain dirt or other contaminants from being grown indoors or outdoors.

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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