Growing microgreens in the greenhouse.
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Growing microgreens in the greenhouse.

Do you want to add fresh, nutrient-packed greens to your home-cooked meals? Do you want to make the most of your greenhouse? Growing microgreens in a greenhouse is an excellent way to do both. This blog post will explain how to set up and maintain a thriving microgreen garden in your greenhouse.


What are Microgreens?

Microgreens are a type of edible plant that is harvested shortly after germination. They are packed with nutrition, flavor, and color and are used in various dishes. Some common types include amaranth, basil, beets, broccoli, cabbage, celery, chard, chervil, and cilantro. Microgreens are generally easier to grow than other vegetables and can be grown year-round in a greenhouse.


What Supplies are Needed for Growing Microgreens?

Growing microgreens in a greenhouse require specific supplies to get the best results. You'll need a greenhouse, seeds of your choice, seed trays, soil, and a light source. Depending on your needs, a cold frame or LED shop light can be used to grow microgreens. Microgreens will grow faster the more hours of light they have available. Select the appropriate soil and seed trays for the plant you're growing. You can pick up your supplies online or at a local garden center.


Choosing a Location for Growing Microgreens in a Greenhouse

When choosing a location for growing microgreens in a greenhouse, the best option would be to find a sunny spot in the greenhouse. Microgreens require at least 8 hours of direct sunlight daily for optimal growth. If that isn't possible, you can use a combination of natural and artificial lighting to provide the necessary light. However, it would be best if you kept in mind that microgreens will grow faster with more hours of light available.

It is also essential to consider the temperature when selecting a location for growing microgreens in a greenhouse. The ideal temperature for microgreens is between 60 - 70 degrees Fahrenheit. If the temperature is too warm, the microgreens will not grow as quickly and may even die. On the other hand, if the temperature is too cold, the microgreens may not grow at all.

Finally, it would help to consider the humidity when selecting a location for growing microgreens in a greenhouse. Humidity levels that are too high can lead to mold growth and can cause the microgreens to rot. On the other hand, humidity levels that are too low can limit the microgreens' growth. The ideal humidity level for microgreens is between 40% - 70%.

Choosing the right location for growing microgreens in a greenhouse is essential for successful harvests. Once you have identified the ideal spot, you can begin preparing the soil and sowing your seeds.


How to Prepare the Soil for Growing Microgreens

Preparing the soil for growing microgreens is an integral part of the process. Microgreens need a light and well-draining soil mix to grow in. For best results, create a blend of about two-thirds potting soil and one-third compost or vermiculite. This combination will provide adequate nutrients and moisture for the microgreens to thrive. Spread the soil mix evenly across the growing container and pack it lightly with your hands. Make sure that all the seeds have enough contact with the soil to germinate properly.


Sowing the Seeds for Growing Microgreens

Once your greenhouse is set up, and the soil is prepped, it's time to sow the seeds for growing your microgreens. Pay attention to the recommended planting depths on the seed package, as this can vary between different microgreens. Generally, you will want to plant the seeds at a depth of about 1/4 inch and then cover them with a thin layer of soil. After sowing, water the ground to keep it moist, and the seeds will begin germinating in a few days. Once the seeds have germinated, you can reduce the water to keep the soil from becoming too wet.


Caring for Microgreens in a Greenhouse

Caring for microgreens in a greenhouse requires providing them with the right combination of light, water, and temperature. It is vital to ensure that the microgreens receive at least 8 hours of sunlight daily. Furthermore, they should be watered regularly, but not too much, as they are prone to root rot. The temperature should be between 65-75 degrees Fahrenheit, and the greenhouse should be well-ventilated to prevent mold and mildew. Additionally, fertilization may be necessary to give the microgreens the nutrients they need to grow.


Harvesting and Storing Microgreens Grown in a Greenhouse

Harvesting your microgreens in a greenhouse is as simple as snipping the plants with scissors. Make sure to cut the stems above the soil surface, leaving the roots in the soil. Microgreens are usually harvested when they reach 2-3 inches in height.

Once harvested, it's essential to store your microgreens correctly to maximize their freshness. Microgreens should be stored in the refrigerator in a sealed container with a damp paper towel to help prevent them from drying. Properly stored, microgreens can keep for up to two weeks.


Common Problems When Growing Microgreens in a Greenhouse

Growing microgreens in a greenhouse can come with some unique challenges. Pests such as aphids, spider mites, and whiteflies can be problematic in greenhouses and damage your crop. It is crucial to keep an eye out for signs of infestation and take action quickly if you notice any pests. Too much humidity can also lead to mold and mildew growth, so ensure to ventilate the greenhouse regularly. Additionally, too much heat can cause the microgreens to dry out and die, so monitor temperature levels. If the temperature gets too high, open the windows and doors to allow air circulation.


Tips for Growing Successful Microgreens in a Greenhouse

No matter what supplies and location you choose, some tips will help you be successful when growing microgreens in a greenhouse. First, make sure that you provide enough light for the microgreens. If you are using artificial light, make sure that it is placed close enough to the plants and left on for the correct number of hours each day.

Second, provide good air circulation in the greenhouse. If the air is too still, the microgreens may develop diseases. You can open the greenhouse doors and windows or use a fan to circulate the air.

Third, keep the soil evenly moist. Too much or too little water can harm microgreens. You can use a soil moisture meter to help you determine when to water.

Finally, be sure to harvest the microgreens at the right time. Microgreens are best harvested when they are still young and tender. You can check the seed packet for the recommended harvesting time to determine when to harvest.


Final Thoughts on Growing Microgreens in a Greenhouse

Growing microgreens in a greenhouse can be a rewarding experience. You get access to fresh, nutritious microgreens all year round, and you can also have the satisfaction of knowing that you grew them yourself. It does take some time, effort, and supplies to get started, but once you have the basics down, it's relatively easy to maintain your greenhouse microgreen garden. With the proper setup, you can grow microgreens in a greenhouse, even in the coldest months.

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