Growing Your Own Baby Spinach In A Hydroponic

Growing Your Own Baby Spinach In A Hydroponic

Growing Your Own Baby Spinach In A Hydroponic, Why you ought to grow your own spinach rather than purchasing it from a supermarket or big-box retailer

If you followed EWG’s Buyer’s Guide to Pesticides in ProduceTM 2019 report, which is released annually around March. You may have heard that conventionally grown spinach has more pesticide residue.

By weight, the neurotoxic bug killer that was found in three-quarters of the samples was illegal to use on food crops in Europe and was heavier than all other tested products.

Growing Your Own Baby Spinach In A Hydroponic
Growing Your Own Baby Spinach In A Hydroponic

In terms of having the most pesticides among the fruits and vegetables currently sold in supermarkets and grocery stores across the United States. It has risen from eighth on EWG’s “Dirty Dozen” list to number two.

The USDA has also discovered pesticides on frozen and canned spinach. This suggests that the levels of pesticides in just washing and cooking are much lower. (A press release containing all of the research results on spinach is available here.)

As you may already be aware, spinach is a great source of folate, vitamins A, C, and D. A good source of potassium, vitamin E, and vitamin C are also present.

But in order for your body to benefit fully from these nutrients. After it is harvested, spinach should be eaten right away.


Studies have revealed that the temperature at which baby spinach leaves are stored has a significant impact on their high rate of respiration. According to one Hort Technology study, baby spinach leaves (harvested 36 days after planting) lost significant nutritional value.

The total antioxidant activity and vitamin C content of the leaves decreased after six days of storage at 39.2°F. But after just two days of storage at 71.6°F, both the amount of vitamin C and overall antioxidant activity began to decline.

For instance, after 8 days of storage at 39.2 oF and after 2 days of storage at 71.6 oF, respectively, the concentration of magnesium (Mg), zinc (Zn), and iron (Fe) all decreased. Samples stored at 71.6 oF showed a rapid decrease in total phenolic compounds after 4 days, whereas samples stored at 39.2 oF showed a gradual decrease.


Showed that baby spinach quality decreases as storage time and temperature rise. (Read more about the research here.)

According to research, nutritional value decreases with each hour that passes after harvest, so the sooner you can eat your food, the more nutrients your body will get from the spinach.

Temperature fluctuations are just one factor that affects how quickly spinach goes bad. You also need to take into account how long it takes to get the spinach from the point of harvest through transportation, and storage before it is sold in stores.


In an estimated 10-day period, produce is shipped from the location where it is grown to the consumer’s plate.

10 days!! The transportation and storage of the spinach after harvest while maintaining a constant temperature of 39.2°F or less is crucial for you, the consumer. Could the cheaper price at the store be a result of the product’s lower quality in comparison to what can be grown at home?

If you have a little knowledge, you don’t have to accept subpar spinach and other greens. You can grow spinach and other greens in your own backyard and harvest them when you’re ready to eat them for the maximum nutritional value.

The information in this article applies to related hydroponic systems, but was written with aeroponic and hydroponic Tower Garden by JuicePlus+TM growers in mind for growing spinach indoors or outdoors in their own homes or on a backyard deck.

Knowing that your homegrown baby spinach is pure because you grew it yourself can make you feel more at ease and confident. Additionally, you will be able to harvest when a plant is at its nutritional peak for maximum benefit, enabling you to go straight from your Tower Garden to your dinner table!

Vegetable gardening:

Here are some things to keep in mind regarding the requirements for growing spinach. The time of year and whether you are growing indoors or outdoors are important considerations. Because spinach is a COOL SEASON crop, excessive heat can cause it to bolt (go to seed and become bitter).

Selecting a type of spinach:

Seed-grown plants ensure that your seed is fresh because older seed has a harder time germinating. The following varieties are suggested as being the best fit for the Tower Garden:

  • Monnopa Heirloom Low-Acid Spinach (Very Rare) (100% Heirloom, Non-Hybrid, Non-GMO Seed Purchase)
  • Monnopa spinach is a perfect choice for those who need low-acid foods in their diet.
    – One of the sweetest spinach varieties you can grow in your Tower Garden or hydroponic system. – Extremely easy to grow.
  • Days to Maturity | 45-60 days

Spinach: A Noble Giant (Purchase 100% heirloom, non-hybrid, non-GMO seed) 

  • Noble Giant Spinach is a heavy, glossy, dark green plant with leaves that are heavily savoyed and crumpled.
    It is extremely delicious and one of the most popular spinach varieties you can grow in your Tower Garden or hydroponic system
    . It is also very easy to grow.
  • Days to Maturity | 45 days

New Zealand spinach (purchase 100% heirloom, non-hybrid, non-GMO seed) 

  • New Zealand Spinach seeds will produce very flavorful, medium-sized, triangular-shaped green spinach leaves. New Zealand Spinach is a large, growing plant.
  • This is one of the few spinach varieties that produces continuously all year, from spring to fall. The more you cut and use, the more it will continue to grow.
  • And … The New Zealand spinach, unlike the other spinach varieties, can withstand hot summers.
  • Days to Maturity | 75 days

Spinach: Bloomsdale (100% heirloom, non-hybrid, non-GMO seed): 

  • Bloomsdale Spinach will produce heavy, glossy, dark green leaves.
    Excellent flavor
    – Extremely simple to cultivate – Large, curly, dark green leaves
    – Delicious sweet flavor
  • Days to Maturity | 45 days
  • America (purchase 100% heirloom, non-hybrid, non-GMO seed) Spinach will produce a beautiful, dark green plant in only 40 days. smaller plant stature.
    Excellent flavor; extremely easy to grow; best grown in the cooler months.
  • Days to Maturity | 40 days

Matador Viking (100% heirloom, non-hybrid, non-GMO seed) 

  • Matador Viking Spinach will produce beautiful, large, smooth, dark green spinach leaves in only 45 days.
    excellent flavor.
    Full of nutrients
    – Extremely simple to cultivate.
    – Grows best in cooler weather.
    – Grows exceptionally well in pots and other small spaces.
  • Days to Maturity | 45 days

Winter Giant (100% heirloom, non-hybrid, non-GMO)

  • Spinach seeds will produce very flavorful, large green spinach leaves.
  • Winter Giant is a spinach variety that belongs to the Spinacia family. It is a vegetable and is treated mainly as an annual, which means that it grows best over the course of a single year. source: myfolia
  • known for growing to a height of about 2 feet.
  • Days to Maturity | 55 days

For plantings later in the spring, pick slow-bolting varieties. For fall crops, disease resistance is more crucial. Savoyed (curly) leaves are beautiful and better preserved. Warm-season greens that resemble spinach but are different species include Malabar spinach and New Zealand spinach.

In midsummer, common spinach cannot grow. (For a summer harvest, try Malabar spinach or New Zealand spinach, two related leafy greens that can withstand more heat.) The Old Farmers’ Almanac

You can always buy spinach from a local hydroponic grower. If you are late in the season and missed your seed start date. We recommend visiting your nearest grower rather than sending the seedlings in (remember, shipping containers can get very hot or very cold, which can damage the young young plants).

The recommended number of plants to plant is:

It is thought that you should aim for 15 plants per person. You should plant a full tower garden with one extension for 28 plants and two spinach plants per rock wool for a total of 56 plants for a family of four.

Using seeds to start your spinach:

freezing stratification

Some growers will store seeds in the refrigerator for one to three weeks before planting, according to They become harder as a result, which could make the plant healthier.

You should be aware of the local frost and freeze dates if you’re planting outdoors. These dates can be found here or by performing a Google search. (If you’re growing spinach indoors, skip the next paragraph and go to the one after it.) As long as you keep your home within the proper temperature range, you can grow spinach indoors at any time of the year using the Tower Garden LED Indoor Lights.

You’re having trouble sprouting your spinach seed. Try this expert advice: Put seed between two wet paper towels in a plastic container, then cover with the lid to seal. When you check your seeds in 7–10 days, you may notice some of them have roots emerging from the seed casing, indicating that the seed is still viable.

To keep the seed moist, you should transfer it into a wet rock wool cube and surround it with a few pieces of vermiculite. Never put on a heat mat. Place under strong artificial grow lights while maintaining moist but not soggy conditions for the rock wool and vermiculite. soaked. To control humidity levels and prevent any fungal diseases from spreading to your seedlings, make sure the room has a fan to move the air.

Hydroponics system with outdoor planting:

In order for your seedlings to be about four to six weeks old by the time your spring frost date arrives, you should start your seeds indoors or in a greenhouse if you plan to plant in the spring. If you are planting in the fall, you should take into account your potential harvest window and work backwards from your frost date.

Be aware that you should not overheat your seedlings when exposing them to UV light in the fall. Spinach prefers a temperature range of 45° to 75° and may not germinate if it is too warm. Use a UV light system of some sort to grow your seedlings indoors; for instance, choose a variety with a short maturation date for a fall planting in the southeast. Keep the light source 8′′–12′′ away from the seedlings if using LEDs or 5′′–6′′ if using fluorescent lighting.

How many seeds should I sow into each piece of rock wool?
On average, 5 seeds should be sown into each rockwool cube. Usually, spinach germinates in 1-2 weeks. Use seed that is packaged for the current growing season to increase the likelihood that it will germinate.

If you are worried about crowding, you can always take out any extra seedlings as the plants grow. Start out with more and thin down as necessary—that’s our guiding principle (plus the seedlings will be healthy for you to eat as micro-greens).

How much nutrition your seedlings should receive:

Water the seeds every day with a 1/4-strength nutrient solution until they sprout. Use a 1/2-strength solution after sprouting.

Your seedling is being thinned out.

You should remove (or “thin out”) the weaker seedlings from the rock wool as they emerge from the seeds and grow. (Keep in mind that this is not a wasted plant; you can try replanting it in soil or just eat it as a microgreen.) You should give 1-2 plants per rock wool some time to develop.

your hydroponic system for seedling transplantation

About two to three weeks after sprouting, seedlings should be prepared for transplant into your Tower Garden or hydroponic system. Before seedling plants are prepared to leave the nest and enter the hydroponic or aeroponic Tower Garden or other related system, they should be about 2-3 inches tall and have three to four true leaves.

Finally, keep in mind that to guarantee a continuous harvest, spinach plantings should be spaced out by about 2-3 weeks.

Your growing season will be longer if you plant in the spring rather than the fall. By adding a professional-grade heater to your Tower Garden reservoir, you can extend the time you can plant outdoors in the fall. This will keep the water at a temperature of around 70 degrees Fahrenheit so the root zone can continue to absorb nutrients. Just remember to cover your Tower Garden outside when freeze warnings are issued.

For spinach, the following nutrient levels will ensure optimum growth throughout the growing ssued. For spinac

1.5 mS cm1 (1.2 for warmer temperatures)
(We recommend Tower Tonic Mineral BlendTM for a well-balanced nutrient solution that will provide your plants with the necessary N, K, P, and micronutrients. (You can purchase a 1 gallon set of Part A and Part B here.)

PPM: 1260-1610

(We recommend Tower Tonic Mineral BlendTM for a well-balanced nutrient solution that will provide your plants with the necessary N, K, P, and micronutrients. (You can purchase a 1 gallon set of Part A and Part B here.)

pH: 5.8–6.2 (pH is essential to help the plant uptake nutrients.) Light: amount of sun or light exposure throughout the day.

Hydroponic spinach should get between 10 and 14 hours of light per day.

Spinach Temperature Tips:

(Root zone temperature is essential to help the plant uptake nutrients.)

75 degrees Fahrenheit is the maximum temperature.

Optimal Day Cycle Temp  65º – 70º Fahrenheit

Optimal Night Cycle Temp: 60°–65° Fahrenheit

Seed Storage: 40° to 70° Fahrenheit

Germination: 60° to 75° Fahrenheit

Your spinach has been harvested.

Record on your calendar the number of days needed for the spinach variety you are planting to reach maturity, which can be found on the seed packet. When the plants are fully grown, remove the older outer leaves of the spinach plant with a clean, sanitized pair of hand trimmers or scissors, leaving three center leaves to develop.

Throughout the entire growing season, the plant will continue to produce leaves for you. To reap multiple harvests, simply go back and harvest the outer leaves, leaving three to four center leaves each time. Ideally, spinach should be consumed shortly after harvest; however, if storage is required, the ideal conditions are rapid cooling down to 34°F and 95–98 percent humidity to prolong shelf life (i.e., inside a plastic bag).

How to store spinach if it is not going to be eaten right away:

Dehydrating or freezing are two options if you have more spinach growing than you can consume. Place your spinach leaves on a dehydrator rack at 110°F for 12 to 24 hours to dehydrate them. Remove the leaves from the dehydrator when they are crunchy (you can break them in half) and place them in a Mason jar or a pouch that is tightly sealed and has an oxygen absorber.

To add more nutrients to pestos, dehydrated spinach can be ground into a powder and added to soups. You can also defrost your harvest and use it in recipes that call for spinach after freezing it in an airtight bag or container for smoothies.

The advantages are that a) you know what is in your spinach (no pesticides!) and b) your ability to harvest and process the spinach right away greatly enhances its nutritional value.

In the comments section below, please ask any questions you may have. Also, happy expanding!

FAQ How to Grow Your Own Baby Spinach in a Hydroponic System

Can hydroponically grown baby spinach be produced?

Spinach is one crop that thrives incredibly in a hydroponic system. For fresh greens all year long, a hydroponic greenhouse works wonders for this tasty and healthy plant!

The ideal type of spinach for hydroponics Actually, any variety of spinach can be attempted to be grown hydroponically, but cultivators of hydroponic spinach frequently use the Noble Giant and Bloomsdale due to their ease of cultivation. You can also choose to start with seedlings instead of seeds if you prefer.

Can spinach be grown solely in water?

Spinach can be grown in a water container just like the majority of other greens.

Which vegetables can’t be hydroponically grown?

Plants that cannot be hydroponically grown Corn. Corn has deep roots and needs a lot of sunlight or natural light. Sweet potatoes and potatoes Vegetable with a large root Vine crops Cabbage, pumpkin, and various gourds Melon and squash

Which vegetable cannot be grown hydroponically?

The following root vegetables should not be grown hydroponically: turnips, onions, garlic, carrots, and rutabaga. These species typically require a lot of soil so that their roots can spread out and look for nutrients and moisture.

How long does it take to hydroponically grow spinach?

Even though hydroponic spinach requires more attention than other types of crops, it is well worth the work because it can be grown from seed to harvest in as little as five and a half weeks!

What vegetable yields the highest returns when grown hydroponically?

What are the 9 Most Lucrative Hydroponically Grown Crops? Basil. One of the most popular herbs in India is basil; it has a wonderful aroma and gives any dish the ideal flavor. Cilantro. Lettuce. Spinach. Peppers. Onion in spring Mint. Cucumber.

Which three plants should not be grown in hydroponic systems?

3 Hydroponic Plants to Avoid Corn Since corn requires a lot of sunlight and has extensive roots, it is not suitable for hydroponic gardening. Melon and squash Due to their viny growing habits and large fruit size, squash and melons are not recommended for hydroponic growing. tree fruit.

How much time does spinach need to grow in water?

days after planting, the entire plant can be harvested. When a plant is harvested, the stem is cut close to the ground, and nitrogen is then added to promote regrowth. In Massachusetts, growers will receive two to three cuttings of water spinach before the first frost because the shoots regrow easily.

How many times can spinach be grown?

SUMMARY: Spinach plants will most likely regrow for two or more harvests as long as the growing point is not damaged during the initial harvesting and the weather is still cool.

How is baby spinach grown indoors?

The following are the steps for growing spinach indoors: Make the soil mixture. Fill the pots with the seeds. Particularly if you reside in a tropical climate, keep it cool. Regularly water it. Mulch and fertilize as necessary. Do not forget to inspect for diseases and pests. Leaf thinning Happy harvesting!

What are the two drawbacks of hydroponically growing crops?

Five disadvantages of hydroponics: it is expensive to set up. A hydroponics system is more expensive to buy and construct than a conventional garden. exposed to power outages requires ongoing maintenance and monitoring. illnesses caused by water. Plants experience issues more quickly.

How many times can baby spinach be harvested?

After two harvests, halt the collection of baby spinach leaves. Then allow the plant to produce fully mature leaves for a third harvest.

Does hydroponics require a flush before harvest?

Timing Is Everything: When Should You Flush Your Plants? If you’re growing in soil, start flushing one to two weeks before harvest. If you’re growing in coco, flush your plants for up to a week before harvest. Your plants only need to be flushed for one to two days if you’re growing hydroponically.