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Green Beans

Growing Green Beans hydroponically is super simple, if you know how. In this post, I will walk you through how to go from Seed to Harvest with hydroponic Green Beans.

Let’s get started!

Green Bean Facts

  • Optimal PH: 6.0 – 6.5
  • 1400 – 2800 PPM
  • Temp: 60 – 70 degrees
  • Enjoys: full sun, lots of water, and nitrogen

Grows Well With

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Green Beans are self pollinating

Hydroponic Green Beans

Growing green beans hydroponically can be a great way to harvest a fresh crop year-round. Hydroponic systems are designed to use approximately 1/10 of the amount of water as traditional soil methods. Plus, in soil-based systems you are dealing with air and water pollution from fertilizers and pesticides, but with hydroponics, you don’t have to worry about those environmental issues. Additionally, since the plants receive all their nutrients directly from the nutrient solution, it eliminates the need for adding any extra fertilizers and the pH level is easier to regulate. All this adds up to growing healthy green beans in substantially less time than soil-based systems.

Green Beans do great in Hydroponic systems! If you have experience with growing plants in hydroponics, then this will be simple. The first thing you need to do is germinate your seed. Green Bean Seeds are larger than most other plant seeds. Many people like to germinate these in a wet paper towel.

After a few days, the seed will begin to sprout up. You will know it is time to transfer to your unit once the true leaves appear. After transporting it to your AeroGarden, keep an eye on the water. Green Beans are a heavy water drinker. After you have watered it, and given it the nutrients. All there is left to do is keep an eye out for it, raising the light as it grows taller. For Green Beans, you will need some type of support system. Whether that is a trellis, or some type of twine. I have listed my favorites from Amazon at the bottom of this page.

  • Ready to eat in about 6 weeks, more or less

How did I grow the biggest beans in Hydroponic system:

Aeroponic Green Beans

The same rules apply to aeroponic systems. If you have growing towers, the green beans will do fine but be sure to get plants that like the same nutrients. Just keep in mind the size of the plant before starting to plant!

Indoor Green Beans

Indoor Green Beans are quite simple. You are able to grow them inside using an of these systems – hydroponics, aeroponics or even soil! Green Beans grow faster in the systems rather than soil.


To prune your green bean plants, it’s just like any other plant. If you are growing these in a smaller system , then you will need to prune more often to ensure that all the leaves are getting the correct amount of sunlight. There is such a thing as a sucker on the Green Bean plant, these look tiny leaves sprouting from in-between two stems. You will want to cut these off as they are useless to the plant, and just ends up sucking all the nutrients and water.

Pest Control

The great thing about growing inside is that you have to worry way less about pests getting into your plants. Pests that normally attack Hydroponic Green Beans are: Fungus Gnats, Aphids, Mites, and White Flied. To avoid these, keep all doors and windows closed, and wash your hands! You can also change your clothes (If you went outside with these on) to ensure that no pests will invade your plants. 


Most diseases come from root rot which is not a problem with aeroponic and hydroponic systems.

However, indoor plants are still captative of getting a disease. The most common are: Powdery Mildew, Downy Mildew, Gray Mold, Iron Deficiency. To avoid these, make sure your water and nutrients is right, and the temperature in your room/grow room.

Tips & Tricks

  • Slice the seed a bit for better and faster growth rate. Soak for about 8 – 12 hours, if you soak them for too long, then they could become mesh.
  • You can also place the seed in water for a day to allow the seed shell to soften for make the germination process faster
  • It is not required to self pollinate the Green Bean plants, but many growers like to shake the plant a bit just to make sure
  • Check your water daily, as Green Beans are a heavy water drinker

Inside Scoop

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