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Microgreens: Power source from the window sill

Grow microgreens and sprouts for smoothies and juices

Green smoothies with microgreens in winter. It doesn't get fresher than this.

In the winter months, the choice of leafy greens is very limited, only a few wild herbs are available, sometimes I crave fresh, soft leafy greens and wish it was spring. My solution to satisfy my cravings - Microgreens. These are small green seedlings that you can grow from pretty much any seed whose plant or fruit is edible - including. Broccoli, arugula, radishes, beet or even chia and amaranth. Microgreens are packed with nutrients and can be grown on the windowsill at home easily. They thrive within a few days and add a special nuance to your green smoothie. Simply blend them with the other ingredients in a high-speed blender. Another option is to use microgreens to enhance the taste and appearance of salads, soups or stews.

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Microgreens growing guide: from seed to green plant:

  1. I start by soaking the seeds in a jar of water for a few hours. Some seeds (such as quinoa) can only tolerate a few hours or they will burst. For most, however, one night is a suitable duration. Soaking is like a kick start. It is not absolutely necessary, but it speeds up the germination process and reduces the risk of the plants drying out in the early stages.
  2. In a plastic tray (hardware store), I place small growing pots filled with organic growing soil. Our living room is warm but rarely ventilated, so there is always a risk that the small plants will mold. With this plastic tray variant, waterlogging can be easily controlled and excess water can be drained off.
  3. The soaked seeds are placed on top of the soil and sprinkled with some more soil. Water once, put plastic wrap over it and it will start to sprout. It's helpful to put up some signs so you don't end up mistaking arugula for broccoli.
  4. Use a spray bottle to water the plants regularly so they don't dry out. It is best to place them by the window, as they need light. Now, depending on the seed, it takes 1-10 days for them to start growing. Hemp, for example, germinated only after 10 days. Harvesting can be done as soon as at least two green leaves have emerged or when curiosity becomes too strong.
Microgreens: Seeds in the germination stage
Preparation: Soak seeds in water for a few hours.

Cultivation pots
Equipment: Growing soil and growing pots. Here the seeds are "planted".

Microgreens: Arugula sprouts
This is how fast it works: 4-day-old arugula - two leaves - now ready to harvest.

Microgreens: Amaranth plantlets
Red accents: Microgreens can even be grown from amaranth grains.

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The little ones need fresh air

Plants thrive best in their natural environment. I therefore try to place the plants in direct sunlight regularly, as long as the temperatures are above freezing. The formation of chlorophyll is enhanced by direct sunlight. In addition, the fresh air outside prevents mold. If you do not have this opportunity, you can always give the plants a breath of fresh air through a open window.
I was interested in the influence of sunlight on the formation of the plant pigment chlorophyll, so I made a simple test series in which I examined how wheatgrass thrives under different conditions.

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Small excursion wheatgrass:

Wheat is a wonderful microgreen full of vital substances and at the same time a quite resistant plant. For my experiment I have chosen three different variations of planting

  1. In the germinator: The germinator offers the best conditions - regular humidification, air movement and thus no mold growth. In the germinator, however, the plants receive little light.
  2. On the windowsill: There is a certain supply of light and regular water, but air circulation is lacking indoors.
  3. Outdoors: The germinated wheat was poured directly onto the ground and not given any further attention.
Grain grass
1. Wheatgrass in the germinator

Grain grass
2. Wheatgrass from the windowsill

Fresh outdoor wheatgrass
3. Fresh outdoor wheatgrass in January

There are two things that really surprised me:
First, how little green the plants turned in the germinator. The grass remained pale and even when I "seeded" it after a week, it did not turn nearly as green as it had in the other variations of planting.
Second, I was amazed at the growth of the wheat , which I sowed in January at freezing temperatures - the outdoor wheat had shown no change for weeks. After a few days of snow in Berlin, I even forgot about it. However, when the snow melted, a rich, vibrant green emerged. The wheat on picture 3 is about 4 weeks old. The plants in picture 2 only one week. Outdoors, growth started much later, but the stalks are much thicker and more robust than those of the plants grown indoors. The plants from the windowsill thrived wonderfuly and were mold-free during the first week. After ten days, however, the root zone was infested with mold. This is the biggest problem when growing wheatgrass indoors. The best result is achieved when wheatgrass is pre-grown indoors (2-3 days) and then placed outdoors. To make it grow more quickly, it can be brought inside at night.

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Areas of application of microgreens

Microgreens can be used in many ways, as they taste intense and are eye-catchers. With the small seedlings, many dishes can be refined in taste and appearance. Whether salads, soups or side dishes - the small green plants enrich every hearty meal. Obviously I'm going to try them out and see how they do in a green smoothie. I usually take 1-2 tablespoons of microgreens and add them to the rest of the greens. Since many microgreens are a bit spicier, I wouldn't use them as the only green ingredient. The seedlings of peas, sunflowers, or mild leaf lettuces like Indian lettuce or lamb's lettuce, on the other hand, are very mild and can be added to smoothies in any quantity. They are also good to use as toppings and encourage chewing while enjoying the smoothie.

Green smoothies with microgreens topping
Special nutrient power: microgreens in and on green smoothies.

Use your imagination and experiment with anything that produces edible green leaves. It feels good to bite into fresh crunchy greens and bring spring into your kitchen. Have fun with these nutrient-rich little creatures.

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We appreciate your Feedback here!

Salad with lots of microgreens and sprouts

Svenja from GrueneSmoothies.com

Green smoothies have been my replacement for morning cerals since 2009. They are inspiring, delicious and speak for themselves. They fit into our lives with five kids and lots of joy in creative healthy cooking. I really love to prepare or create new smoothies. Inspired by the Green Smoothie, I combine two of my passions with my job: taking pictures and working with food.

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21 | Comment(s)

1/1/2024
Silke
Hello everyone, happy new year first of all! I enjoy making a green smoothie with nettle. Is it possible to grow nettle from seeds as microgreens in winter? If so, which seeds do you recommend?
Warm regards,
Silke
1/2/2024
Carla von GrüneSmoothies.de
Hello Silke,

thank you for your question. Unfortunately, I don't have any experience with growing wild herb sprouts. However, you can probably find an answer elsewhere online.

Best regards,
Carla
6/1/2020
Vanessa
Hello :)

I'm new to the world of sprouts and have the following question:

Can you always eat the roots of microgreens? Or are there varieties that you MUST cut off?

I was familiar with cress, for example, where you always cut it. But I've also read that the root can be eaten. It's important to me to know if it's health-wise safe to eat the roots as well.

I can't find an answer anywhere, so I hope you have a solution for me.

Thank you very much and best regards :)
6/2/2020
Carla von GrüneSmoothies.de
Hello Vanessa,

thank you very much for your question.
As far as I know, with sprouting plants or microgreens, only the leaves and the stem are eaten, not the roots.

Best regards,
Carla
3/23/2018
Annett
Thank you very much for the lovely article. I might try it with soil as well when it gets warmer. I always grow in jars and have just noticed how much greener the sprouts become when I take them out every now and then and place them in the sun.
Best regards, Annett
3/23/2018
Christine
Exactly, that’s what I’m wondering too... how short should I cut it? Will it grow back again afterwards, or do I need to remove the sprouted seeds and replant? If not, could I do it in a flower box that’s on the balcony floor, even though it’s in the shade but still bright?
Thanks so much, Tine
3/23/2018
Carla von GrüneSmoothies.de
We've found that wheatgrass tends to regrow. Whether it's as nutrient-rich as it was after the first section, we're not sure. There are varying opinions on that. We only used the other seeds once - though we did grow them indoors. I'd say, give it a try and let us know how it goes :)
7/7/2017
Martha
Wow, GREAT! Thank you so much for this very interesting article and YES, I want to as well! This form of cultivation is my next project. One question: Can you eat the stems of the sunflowers and peas, or just the leaves? About 10 years ago, I grew sprouts and greens on my windowsill. I remember wanting to grow sunflower greens, but then I became unsure about the right harvesting time since my sunflowers were already very well-developed after about 14 days, with thick stems and hairy. I felt a bit uneasy about eating them. Best wishes, Martha
7/10/2017
Carla von GrüneSmoothies.de
We harvest the seeds as soon as at least two green leaves have developed. By then, you won't have any thick stems yet. Just give it a try. Best wishes, Carla
5/21/2016
Andreas
If you're going to do it, then get one of these system growing kits; you'll have a daily supply of greens - it works perfectly for spelt grass juice too! And definitely remember to order the sprouting jar for pre-sprouting!! It's just genius.

Best regards,
Andreas
5/23/2016
Nora von GrüneSmoothies.de
Thanks for the tip. We should definitely give that a try...
5/25/2015
Andrea
Hello Svenja,
Lately, I've been pondering whether it would be possible to cultivate nettle, ribwort plantain, and Good King Henry microgreens on the windowsill during winter. As the seeds can easily be collected during summer, your article came at just the right time. I will give it a try. Thank you so much for the inspiration.
Andrea
5/27/2015
Svenja
Dear Andrea,
That's also a great idea, fresh wild herbs from the windowsill, I hadn't thought of that. Thank you very much for the tip and good luck.
Svenja
3/6/2015
Miriam
Hello Svenja,
I think your post is really great and interesting! I have a question about it! I would like to try growing wheatgrass on my windowsill with occasional exposure to the outdoors. Is it better to do it with or without soil? Or does it not matter?

Best regards
3/6/2015
Svenja
Dear Miriam,
I have always grown wheatgrass using soil because I wanted to follow nature's example. However, there is also something called plant fleece available. Apparently, it has advantages in terms of preventing mold formation. I just discovered that there is a wheatgrass sieve available, which might also work. Take a look here: www.eschenfelder.de.
Good luck with your experiment, and feel free to reach out if you'd like to share your experience.
Best regards, Svenja
3/26/2018
Andrea
Hello, I bought the wheat grass sieve from Eschenfelder a few weeks ago and have successfully grown wheatgrass already. Although it is quite expensive to purchase, it is definitely worth it, as rinsing the roots prevents mold growth, and it’s also a very clean process.
3/27/2018
Carla von GrüneSmoothies.de
That sounds great. I've also been thinking about getting a sieve like that. Thanks for your feedback :) Carla
8/10/2016
Sarah
I often have issues with mold formation when growing wheatgrass. Recently, I found this page in German on how to prevent mold to some extent. It also explains how to grow it without soil. Maybe it will help.

Best regards
8/12/2016
Anne von GrüneSmoothies.de
Dear Sarah,

thank you so much for your great tip.

Warm regards,
Anne
8/12/2016
Andreas
Mold will probably never be completely avoidable there.. It's also heavily dependent on the weather (high or low pressure..) but when it does occur, only the root area is affected, so it doesn't impact the rest of the plant. (It's just nature)
Regarding cultivation in the Eschenfeld sieve bowl, I can only say that I tried it too, but just once.. The roots grow in so tightly - and the yield for the effort and cost is rather low.
Best regards
8/15/2016
Anne von GrüneSmoothies.de
Dear Andreas,
thank you for your feedback and your helpful exchange of experiences. Yes, the constant moisture at the bottom really makes it difficult to avoid mold formation...
Wishing you continued joy in your growing endeavors,
Anne