How to Grow Microgreens Indoors

One of the easiest and fastest growing crops is microgreens. They offer a palette of fresh flavors, from light to spicy. Encourage replanting to provide a steady supply of fresh vegetables for creative use.

Understand how to grow microgreens indoors

These young microgreens are grown for a tender stage crop and are ideal for a windowsill garden. They are ready for harvesting and can shed their stems after only two to three weeks of germination. If left to grow further, the microgreens take on the form of young sprouts and then whole plants.
You will need a putty mix and bright light to grow microgreens indoors. From flavors to delicate, like a mature plant.

What you need


  • Garden trowel
  • Watering can


  • 3-inch peat pots or other suitable containers
  • Soilless seed-starting mix
  • Vermiculite
  • Seeds
  • Plant labels
  • Plastic wrap

Dampen Soil (Step 1)

To start growing microgreens indoors, recreate a mix that starts with non-soil seeds, a sterile medium designed to promote seed growth. Sprinkle hot water on the mix and blend until it is well moistened.

Fill Containers (Step 2)

Fill each container with premature seed mix. No need to pack in place. Packing the container too tight will cause drainage problems. Place the container on a water type drip tray or saucer.

Sprinkle Seeds (Step 3)

Sprinkle evenly over the surface of the seed starting mix, usually much thicker. Leave at least 1/4 inch of space between its seeds.

Cover Seeds (Step 4)

Sheet the seeds with vermiculite. This mineral-based water absorbs water and releases it slowly, keeping the seeds moist but not too wet. Follow the instructions for the depth provided on the seed packet. Some seeds should barely cover. Others need to be well covered to germinate (sprout and grow-up).

Water (Step 5)

Water the sown seeds with a light shower, soak the seeds in vermiculite without washing. Until the seeds germinate and green shoots sprout from them, add light water as needed to keep the seed starting mix moist. If the mixture is too wet, the seeds will not take root and fail to germinate.

Cover (Step 6)

Cover the boxes with a lightweight plastic sheet or broken lid to encourage optimal growth of microgreens indoors, to retain moisture and promote germination. Arrange the drip tray on the heat mat to start the seed or prepare it on the heating pad.

Care For Plants (Step 7)

When the seeds germinate, remove the lid and heat source. Set the containers on a sunny window to help your microgreens grow indoors. Keep the plantings moderately moist and promote healthy growth by watering from below. Pour water into the tray and allow it to absorb into the mix without dust.

Harvest (Step 8)

To cut microgreens, hold one part with one hand and use the other to scrape with scissors. Keep your microgreens cool and in an airtight container until you are ready to use them. Keeping them in the refrigerator gives them a shelf life of about a week.

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