How To Grow Hydroponic Broccoli

Milosh Potikj | March 14, 2023 | 7 MIN READ

Growing hydroponic broccoli offers a convenient and efficient way to cultivate this nutritious and delicious vegetable in a controlled indoor environment. Hydroponics provides an optimal growing system for broccoli, ensuring consistent nutrient delivery and ideal conditions for growth.

Can Broccoli Be Grown Hydroponically?

Growing broccoli hydroponically is one of the best ways to add a nutritious and delicious vegetable to your diet without having soil available. Hydroponic vegetables typically require less space than traditionally grown vegetables, as well as growing more rapidly.

Broccoli is no exception when it comes to this hydroponic trend! Plus, you have a lot of options in terms of different varieties. From standard heads of broccoli to China broccoli, raab, and sprouting broccoli, you can choose whatever type interests you.

Hydroponic gardening is an effective and easy way to get the most out of your garden without taking up too much space or effort.

Best Broccoli Varieties To Grow Hydroponically

Hydroponics is a popular choice among home gardeners and commercial farmers alike, and that includes growing broccoli. Hydroponic systems provide the ideal growing environment for vegetables like broccoli by creating a nutrient-rich solution which allows direct access of these key elements directly to the plant roots.

This eliminates the need for external soil or potting mix, making it much easier for farmers to meet crop requirements with exacting accuracy.

When selecting a variety of broccoli to grow in your hydroponic system, most beet growers opt for Calabrese because it’s the most popular option. But there are many other varieties available which may suit you better, depending on your needs.

Some of these include Arcadia, Blue Wind and Di Cicco, all of which provide robust flavor and size in shorter days to harvest than Calabrese varieties. Additionally, temperature-sensitive varieties like Summer Purple also thrive easily in hydroponic systems thanks to the controlled microclimate created by their setup.

Whichever variety you decide on, you can rest assured that they can thrive efficiently and sustainably in a hydroponic environment!

Why Grow Hydroponic Broccoli?

Hydroponic broccoli is a great option for those looking to maximize their growing space and to eliminate the need for soil. Since hydroponic systems require very little in terms of maintenance, planting and harvesting are also much simpler.

Even better, you can enjoy super speedy growth because hydroponic conditions perfectly replicate what broccoli seeds needs for optimal growth - keeping it cool in the summer months and providing softer, less direct lighting.

Hydroponics also allows much more control over nutrients, pest populations, and other factors that can negatively impact entire plant health.

Aside from being fast-growing and easy-to-maintain, broccoli grown using a hydroponics system will provide you with all the nutrition benefits you’d get from soil-grown broccoli. Broccoli grown in a hydroponics system can remain fresh over a longer period of time compared to traditional methods due to the fact that nutrients are available directly to the roots as soon as they are needed.

Additionally, since this vegetable is a ‘cut and come again’ kind of vegetable, plants don't need that much space in order to produce an ongoing supply throughout the year - from one or two plants you can end up with enough vegetables to last you until next harvest. 

How To Start Your Indoor Hydroponic Broccoli Grow

One of the best parts about using hydroponic setup for your indoor crops is that you can produce fruits and vegetables year-round, without having to deal with extreme weather conditions.

Growing broccoli indoors is especially advantageous as it requires a lot hours of light and space to grow successfully in traditional soil beds. Starting an indoor hydroponic garden requires some preliminary materials and knowledge.

What Type Of Hydroponics System Is Best For Broccoli?

Broccoli can be grown in a variety of hydroponic systems as long as the plants have adequate space to develop. Some of the most effective systems for growing broccoli are aeroponics, ebb and flow, and deep water culture (DWC).


Aeroponics is a relatively new type of hydroponic system that uses a water pump to deliver a nutrient solution in the form of a fine mist to plant roots suspended in the air. The unique design of aeroponics offers many advantages for serious growers looking for rapid growth, such as increased oxygenation and improved nutrient uptake.

Aeroponics systems generally contain similar components to traditional hydroponic systems, such as grow trays, reservoirs and water lines with spray nozzles mounted on each end pointed at the root zone.

These provide an ideal environment for optimum plant health, allowing them to grow stronger and more quickly than with other methods.

Ebb and Flow

The ebb and flow system is arguably the simplest hydroponic method available, offering great oxygenation and nutrient concentration while still being comparatively easy to set up and maintain.

Referred to as 'flood and drain' this system sees a grow tray supported over a reservoir of clean water and nutrients. This tray is then flooded with a specific amount of water and nutrients from the reservoir below at regular intervals throughout the day, providing an even distribution of resources for your plants.

Deep Water Culture

Deep water culture is an effective hydroponic system for growing broccoli. It involves suspending the plant roots directly in a nutrient-rich solution, eliminating the need for a water pump and air stone to aerate the root zone.

This means that maintenance is minimal since there are only so many moving parts, while also allowing plants to fruit or flower faster than they would with other systems. In addition, growing broccoli in a deep water culture system using only one five-gallon bucket is very possible.

All a person needs to do is fill their bucket with nutrient solution, insert some kind of mounting device that holds their plant in place, and add an air pump to oxygenate the root zone.

With fewer maintenance requirements and shorter growth times for fruits or flowers, deep water culture makes it easy for even beginner gardeners to successfully grow fresh produce – even in something as small as a five gallon bucket!

Deep water systems has become popular among home gardeners and commercial growers alike thanks to its low cost and ease of use coupled with healthy harvests from crops grown this way.

What's more, its simplicity makes deep water culture ideal for classrooms or community gardens looking to introduce students or visitors to hydroponics without having any technical expertise.

What Is The Best Temperature For Hydroponic Broccoli?

When it comes to growing hydroponic broccoli, you want to make sure you are keeping the temperature in the ideal range of between 55 and 65 degrees Fahrenheit. This is because broccoli is a cool-weather crop and when temperatures get too hot, above 70 degrees, it will start to bolt giving it a bitter taste.

Essentially what happens is that flower buds form too quickly and this accelerates the aging process leaving you with an unpleasant tasting nutritious vegetable. To ensure your broccoli won't bolt prematurely, keep the temperature range between 55 to 65 degrees Fahrenheit.

Fortunately, you can better regulate the temperature tolerance in your grows room with a temperature controller. By doing so, you can be sure that your hydroponic plants is taken care of at all times by maintaining an optimal growth environment that won't cause it to bolt premature.

While there could still be some variability due to outdoor conditions or other environmental factors, using a temperature controller will minimize any risks of bolting so that you know you're getting top quality produce.

Recommended pH Level For Hydroponic Broccoli

Hydroponic broccoli is a type of green vegetable grown without a soil-based medium. Instead, the roots are suspended in a nutrient-filled solution and the plants receive their nutrition from the water.

The pH level of the growing environment plays a critical role in how well hydroponic vegetables grow, as certain levels are needed to ensure adequate absorption of nutrients.

For hydroponic broccoli, a healthy pH level is necessary to maximize plant growth and produce quality yields. The ideal pH for hydroponic broccoli production is 5.5–6.5. This range will allow for optimal absorption of various essential macronutrients, such as nitrogen and potassium, that are needed for successful growth.

Additionally, this range helps minimize diseases and pests which may attack broccoli crops when conditions aren’t optimal for plant health. With careful monitoring, and regular testing of the nutrient solution’s pH content, healthy closely coupled with good environmental control measures should result in satisfactory crop production yields from hydroponically grown broccoli plants.

Feeding Your Hydroponic Broccoli Nutrients

Properly feeding your hydroponic broccoli the right nutrients is important for its health and overall success. Too much nitrogen can cause hollow stems and invites pests and diseases, so use a more balanced, customizable solution specifically formulated for brassicas like broccoli.

To ensure that your plants are getting all the essential elements they need to thrive, it's best to change the nutrient solution used once per week. This will provide you with an optimal mix of macronutrients such as nitrogen, sulfur and phosphorus, as well as micronutrients like magnesium and iron.

For added protection against disease or pests, you may also consider adding in some fertilizer supplements or additives such as potassium silicate or mycorrhizal fungi to bolster your broccoli crop's resilience.

How To Harvest your Hydroponic Broccoli Production

Harvesting your hydroponic broccoli production is a simple task that just requires a few simple steps. First off, you should determine when the head is fully developed, this usually takes around 80 days.

When it’s ready, you should use a sharp and clean knife or scissors to cut the stem about four to five inches below the broccoli head. This will allow for additional shoots to develop after harvest, dramatically increasing your yields over the course of its life cycle if done correctly.


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