How to Grow Garlic in Hydroponics

Garlic is a popular herb that is widely used in cooking and medicinal purposes. It has a distinct flavor and aroma that can enhance the taste of any dish. While garlic is commonly grown in soil, it can also be grown using hydroponic methods. Hydroponic garlic cultivation is a unique way of growing garlic without soil and in a controlled environment. In this article, we will discuss the process of growing garlic in hydroponics and the benefits of this method.

Benefits of Growing Garlic in Hydroponics

Growing garlic in hydroponics has several benefits over traditional soil-based cultivation. Some of the benefits are:

  • Controlled environment: Hydroponic systems allow growers to control the environment in which the plants grow. This means that factors like temperature, humidity, and light can be adjusted to optimize the growth of the plants.
  • Increased yield: Hydroponic garlic cultivation can produce higher yields than soil-based cultivation. This is because the plants receive a constant supply of nutrients and water, which leads to faster growth and larger bulbs.
  • Pesticide-free: Hydroponic garlic cultivation does not require the use of pesticides or other harmful chemicals. This makes it a healthier and safer option for growers and consumers alike.
  • Year-round cultivation: With hydroponic garlic cultivation, garlic can be grown all year round. This means that growers can have a constant supply of fresh garlic without being limited by seasonality.

Why Grow Garlic in Hydroponics?

There are several advantages to growing garlic using hydroponics, including:

  • You can grow garlic year-round, regardless of the weather.
  • Hydroponic garlic grows faster and produces a higher yield than garlic grown in soil.
  • Hydroponic garlic is free from soil-borne diseases and pests.
  • You can grow garlic in a small space, making it ideal for urban gardening.

Selecting Garlic Varieties for Hydroponics

When selecting garlic varieties for hydroponics, you should choose varieties that produce large bulbs and have a short growing season. Some popular garlic varieties for hydroponics include:

  • Early Italian Purple
  • Inchelium Red
  • California Early
  • Silver Rose
  • Chinese Pink

Preparing the Hydroponic System

Before planting garlic in hydroponics, you need to prepare the hydroponic system. You can use any hydroponic system for growing garlic, including deep water culture, nutrient film technique, or drip irrigation.

The hydroponic system should be set up in a well-ventilated area with good lighting. The pH of the nutrient solution should be between 5.5 and 6.5, and the nutrient solution should be changed every two to three weeks.

Planting Garlic in Hydroponics

To plant garlic in hydroponics, you should follow these steps:

  1. Fill the hydroponic system with the nutrient solution .
  2. Plant the garlic cloves in net pots filled with hydroponic grow media, such as clay pellets or rockwool.
  3. Place the net pots in the hydroponic system .
  4. Adjust the pH and nutrient levels of the nutrient solution as necessary.

Maintaining the Hydroponic System

To maintain the hydroponic system and ensure the healthy growth of your garlic, you should:

  • Monitor the pH and nutrient levels of the nutrient solution regularly.
  • Add nutrients to the nutrient solution as necessary.
  • Keep the hydroponic system clean to prevent the growth of algae and bacteria.
  • Monitor the temperature and humidity of the growing area.

Harvesting Garlic in Hydroponics

Garlic can be harvested in hydroponics when the tops start to yellow and die back. This usually happens about 8-9 months after planting, depending on the variety and growing conditions.

To harvest garlic, you should first stop feeding the garlic with nutrients a few days before harvesting. This allows the garlic to use up any remaining nutrients in the plant, which can improve the flavor and shelf life of the garlic.

Next, you should remove the plants from the hydroponic system. Carefully lift the garlic bulbs and their roots out of the hydroponic grow media. Be sure to handle the plants gently to avoid damaging the bulbs.

Once you have removed the plants from the hydroponic system, you can begin to harvest the garlic bulbs. To do this, gently remove the bulbs from the plant and brush off any excess dirt. You can use a soft-bristled brush to remove any dirt that is stuck to the bulbs.

After harvesting, it’s important to cure the garlic to improve its flavor and shelf life. To do this, hang the garlic bulbs in a well-ventilated area for two to four weeks. The ideal temperature for curing garlic is around 70°F with a humidity of 70%.

During the curing process, the garlic bulbs will dry out and develop a papery outer layer. This layer protects the garlic from moisture and bacteria, which can cause it to spoil. Once the garlic bulbs are fully cured, you can trim off the roots and tops and store the bulbs in a cool, dry place.

Common Problems and Solutions

Like any other crop, garlic grown in hydroponics is susceptible to certain problems. Here are some common problems you may encounter when growing garlic in hydroponics, and how to solve them:

  1. Yellowing leaves: Yellowing leaves are usually a sign of nutrient deficiencies. Check the pH and nutrient levels of the nutrient solution and adjust as necessary.
  2. Wilting plants: Wilting plants may be a sign of over or under-watering. Check the water levels in the hydroponic system and adjust as necessary.
  3. Pests and diseases: Hydroponic garlic is less susceptible to pests and diseases than soil-grown garlic. However, you may still encounter problems such as spider mites or fungal diseases. Use organic pesticides or fungicides as necessary to control these problems.
  4. Nutrient lockout: Nutrient lockout occurs when the plant is unable to absorb nutrients from the nutrient solution. This can be caused by a buildup of salts in the grow media or by pH imbalances. To solve this problem, flush the hydroponic system with fresh water and adjust the pH and nutrient levels of the nutrient solution.

Related Questions

Can I grow garlic in hydroponics if I live in a small apartment?

Yes, hydroponics is a great option for urban gardening and small-space gardening.

How much garlic can I expect to harvest from a hydroponic system?

This depends on the variety of garlic, the size of your hydroponic system, and the growing conditions. However, hydroponic garlic typically produces a higher yield than soil-grown garlic.


Growing garlic in hydroponics is a great way to enjoy fresh, flavorful garlic year-round. With the right variety of garlic, hydroponic system, and growing conditions, you can produce a bountiful harvest of garlic in a small space. By following the steps outlined in this article, you can successfully grow garlic in hydroponics and enjoy the many benefits of this delicious vegetable.

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