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Red Radishes


Growing Radishes in hydroponic or aeroponic systems is actually possible! It may seem a little odd at first, but I am here to walk you through the full process. Radishes are one of the fastest growing vegetables.

Let’s get started!

Radish Facts

  • Optimal PH: 6.0 – 7.0
  • 840-1540 PPM
  • Temp: 50 – 65 degrees
  • Enjoys: direct light, Nitrogen, Potassium, and Phosphorus

Grows Well With

Grows Well With in Soil

  • Carrots
  • Onions
  • Cucumbers


Grows Well With Aeroponically

  • Dill
  • Lettuce
  • Spinach
  • Oregano

Many growers are put on ease when growing their Hydroponic Radishes. But the truth is, it’s actually one of the easier, fastest plants you can grow in an AeroGarden System.

Germinating Radishes

Hydroponic Radishes

Surprising, these do great in hydroponic systems! The one thing to keep in mind is they are heavy water drinkers. When you plan to plant these in your system, attempt not to plant these with other plants that are also heavy water drinkers. A common problem with these, is having too much of a certain element, which usually ends up being nitrogen.

  • Ready to eat in about 25 – 30 days.

This plant tends to be somewhat a challenge but many growers end up with great results. The key to growing this plant is that there will be different nutrient solutions throughout the growing stages. When starting radish, you will need a basic grow nutrient. This encourages the green top growth. After the tops are developed, usually around the second week, switch to a nutrient for the root.

Before we get into all the details, I need to mention that IT IS possible to grow these in Hydroponics, and the Iharvest. Just keep in mind that it is 1 radish per pod, and you will need to harvest them before they get too big to get them out of the hole. If this does happen, you may need to tear apart your Net Cup to remove the vegatable. 

The light requirement is about 8 – 10

Hydroponic Radish – Will it Kratky?


Aeroponic Radishes

Are you looking for a new and innovative way to grow radishes? Aeroponic gardening may be just what you need. Aeroponic gardening is a method of growing plants without soil, using a nutrient-rich mist instead. This method allows for faster growth and healthier plants, making it an ideal option for those looking to grow radishes. Here’s a list of steps to take if you want to grow aeroponic radishes:

Choose the Right Radish Variety

When choosing a radish variety for aeroponic gardening, it’s important to select a variety that is suited for indoor growing. Some of the best varieties for indoor growing include Cherry Belle, Easter Egg, and French Breakfast. These varieties are known for their fast growth and ability to thrive in small spaces.

Invest in an Aeroponic System

To grow aeroponic radishes, you’ll need an aeroponic system. These systems can be purchased online or at your local gardening store. The system works by misting the roots of the plants with nutrient-rich water. This allows the plants to absorb nutrients more efficiently, leading to faster and healthier growth.

Plant the Seeds

Once you have your aeroponic system set up, it’s time to plant the radish seeds. Simply place the seeds in the designated area of the system and let them grow. Radishes typically take around 20-30 days to mature, so be patient and monitor their growth regularly.

Maintain the System

To ensure the success of your aeroponic radishes, it’s important to maintain the system. This includes monitoring the water levels, pH levels, and nutrient levels. It’s also important to clean the system regularly to prevent the buildup of algae or bacteria.

Harvest the Radishes

Once your radishes have matured, it’s time to harvest them. Simply pluck them from the system and enjoy. Aeroponic radishes are known for their crisp texture and delicious flavor, making them a popular choice for salads and sandwiches.

Growing aeroponic radishes is a fun and innovative way to garden. With the right seeds, equipment, and maintenance, you can enjoy a bountiful harvest of healthy and delicious radishes.


Hydroponic Radishes
We grew our own Radishes and they turned out great!


Pruning will allow the plant to focus most of its energy on the new fruits and stems. Prune the stems and leaves that don’t look as healthy as the others. You can simply eyeball it, and pick and choose which ones you want to keep growing. Remember, the green leaf’s are edible, so after you clean them, you can place them in a nice green salad! These are the Microgreens of the plant!

Pest Control

Even though Radishes are easier to grow, there are still a few pests you will need to keep an eye out for. If you do see any, you can use a Neem Oil to get rid of them quickly.


Keep in mind, it is less likely to attract diseases in the Hydroponic and aeroponic growing systems, just like the pest.

However, you may come across a few diseases. Such as Clubroot, Downy Mildew, White Rust, Black Root, and Scab. Keep an eye on your plants as they are growing  to prevent these.

Tips & Tricks

  • The green leaves are edible! Place them in a salad, or a sandwich
  • If you notice the radishes begin to split, that could be the cause of over watering the plants
  • This vegetable is heavy water drinkers, so you will need to make sure that the water is filled daily
  • Keep in mind that the radishes will not grow as large in the hydroponic system as if they were in the soil
  • You can plant these next to any greens to keep the insect and pests away
  • If you find that your radishes are bitter, this could be causes by a lack of water

Inside Scoop

  • Radish seeds are best when started from seed – it is not recommended to be grown from transplants
  • A grower is in love with the French Breakfast Radishes. These were ready to be picked within 21 days (these tend to be thinner and longer, unlike the normal radish that you may get from the store) A lot of growers love this seed because of that reason!
  • The roots and stems tend to be pretty long, keep this in mind when you plan to grow these with other plants
  • The radish will grow on the surface of the rockwool/growing solution
  • You can use larger net cups for the radishes to grow bigger if needed but it all seems to depend on the size of the plants in your hydroponic system
  • You can simply grow the radishes in rock wool to avoid them being stuck in the hole in the system
  • Radishes that grow larger than normal size then to be spicier than you would expect
  • If you prefer a sweeter radish, then harvest them when they are small and young
  • Mature radishes can taste more peppery
  • Wait about 4 – 6 weeks to harvest

Best Seeds:

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