The Best Garden Sprayer Of 2020

As your garden grows, it becomes especially important to use the best garden sprayer possible. This will make things a lot easier for you, the grower, while producing better results with your spraying.

Here at Hydrobuilder, we offer a wide range of sprayers and foggers for all growers, from small, manual hand pump sprayers to electric backpack sprayers.

Regardless of how you’re using it, these products will help you keep your grow room or garden in tip-top shape. Before we get to the sprayers, however, we should cover why you need one!

The Best Garden Sprayer Of 2020


As your garden grows, it becomes especially important to use the best garden sprayer possible. This will make things a lot easier for you, the grower, while producing better results with your spraying.

Here at Hydrobuilder, we offer a wide range of sprayers and foggers for all growers, from small, manual hand pump sprayers to electric backpack sprayers.

Regardless of how you’re using it, these products will help you keep your grow room or garden in tip-top shape. Before we get to the sprayers, however, we should cover why you need one!

What is a garden sprayer used for?

Some garden sprayers are better than others, but they essentially all do the same thing - apply a fine mist to your plant’s foliage.

There are two situations where you would need to do this - foliar feeding or pest prevention/control.

Foliar feeding

How to use a garden sprayer

Foliar feeding is when you feed your plants nutrients directly on the foliage. Normally, you feed your plants at their roots, whether you are in a hydro system or in pots and soil.

Sometimes, however, you need to feed your plants via their foliage. For example, many growers foliar feed secondary nutrients such as Magnesium or Calcium. Foliar feeding works much faster than feeding at the roots.

There are plenty of other benefits to foliar feeding. You won’t have to worry about nutrient build up in your soil, avoiding harmful salt deposits. This also prevents nutrient lockout. The other time you’ll need a garden sprayer is when you run into pest issues, or simply want to prevent them.

It’s recommended that you lower your nutrient dose when spraying the foliage. You don’t want to risk burning your leaves with test your spray solution before going full boar on your plants. Try spraying a single leaf first, wait a day, and be sure you don’t irreversibly damage your plants.

Pest prevention/control

Because many pests and diseases typically take hold on your leaves, most of your pest control will take place on the leaves as well!

Whether you are preventing or treating pests and diseases, you’ll have to do some spraying. One common practice is spraying neem oil. This natural insecticide also has fungicidal properties. Often times, growers will periodically spray their plants with neem oil, whether they have an infestation or are acting proactively.

How to use a garden sprayer

You may think it’s as simple as filling up a garden sprayer and dousing your plants, but there’s actually more to it. There are a few best practices when it comes to using your garden sprayer.

Two things you need to be careful about are the time of day and weather. The best time to spray is in the morning or late in the evening, as direct sunlight will evaporate and degrade your spray, while also risking burning your plants through the “lens effect”. 

You also don’t want to spray your plants when it’s too hot or too cold. When it’s super hot, your plant’s stomata will close up, making the absorption less effective. And when it’s cold, you run the risk of promoting fungal growth by spraying. You also need to be aware of any rain in the forecast, as it will wash off your spray. The same advice applies for heavy winds, which will dry up the spray quicker than ideal.

The other important caveat to using a garden sprayer is to make sure you get all areas of the plant. A common mistake is only spraying the tops of your leaves. You need to make sure you get the undersides, as this is where more stomata are located. Plus, this is where many pests, such as aphids or spider mites, like to hide.

One final note is that you don’t want to spray your plants during flower. This can lead to moldy buds and bud rot. But, it also messes with the flavor and aroma of your plants.

Now, without further ado, let’s unveil the best garden sprayers for indoor and outdoor growers alike.

What are the best garden sprayers?

We are going to breakdown our list of the best garden sprayers into four sections: manual handheld, manual backpack, electric handheld, and electric backpack. A few things we took into consideration when creating this list are brand, build quality, capacity, weight, and reviews.

Best Manual Handheld Garden Sprayer - The Mondi Deluxe Mist & Spray

Best Manual Handheld Garden Sprayer - The Mondi Deluxe Mist & Spray

Mondi Gardening has a variety of garden sprayers for grows of all sizes. The Mondi Deluxe Mist & Spray has a 1.2 liter capacity, and is pump action. This sprayer is built to last a lifetime, from premium, heavy-duty plastic.

With a sprayer this size, you likely aren’t going to be spraying a ton of plants. Nevertheless, the ergonomic handle makes work easy and comfortable, so it doesn’t even feel like work!

It has an adjustable brass nozzle, and includes an extension for precise spraying and control. This way, you aren’t wasting any expensive nutrients or pest control products!

If 1.2 liters isn’t quite enough, there are a few other Mondi handheld sprayers available at Hydrobuilder. For example, you can grab the Mondi Deluxe Mist & Spray, which has a 2.0 liter capacity. But, it doesn’t include the precision nozzle.

Best Manual Backpack Garden Sprayer - Rainmaker Garden Sprayers

Best Manual Backpack Garden Sprayer - Rainmaker Garden Sprayers

The Rainmaker Garden Sprayers are some of the best manual pump sprayers you can find. Ranging in sizes from ½ gallon all the way to four gallons, there is an option for every grower out there.

What makes these sprayers so great is the included shoulder straps. These make spraying your plants effortless, turning a mundane, laborious task into an easy, pleasurable experience in the garden. If this isn’t ideal, you can still easily carry each one with the included, ergonomic handle.

Some garden sprayers are difficult to use, particularly when filling the sprayer. This is not the case with the Rainmaker! It has a funnel top opening, making filling incredibly easy and convenient.

With other sprayers, you cannot easily see the liquid levels. This makes it tough to mix up your solutions, and tough to tell when you are getting low. With Rainmaker garden sprayers, you can easily see liquid levels through the translucent polyethylene. This material is also super durable, ensuring your Rainmaker sprayer won’t deteriorate over time.

Rainmaker garden sprayers also have a few other features that set it apart from the competition. For example, each one has a trigger with a lock on option which can be engaged for a continuous spray. Plus, they include a pressure relief valve and a 3-foot hose. Here at Hydrobuilder, we carry Rainmaker Garden Sprayers in the following sizes:

Best Electric Handheld Garden Sprayer - Hudson Insta-Spray 1.3 Gallon Garden Sprayer

Best Electric Handheld Garden Sprayer - Hudson Insta-Spray 1.3 Gallon Garden Sprayer

The Hudson Insta-Spray Garden Sprayer is a battery-powered sprayer (4 standard “D” batteries), with a thumb-operated 3-position switch (on, off, reverse). The batteries will last 10 gallons of spraying, all season.

The reverse option draws residual liquid out of the wand and hose back into the tank, which is a cool feature for when you’re finishing up and want to conserve your solution.

The Hudson Insta-Spray uses a double telescoping wand that extends from 16 inches all the way to 35 inches with no bending. Plus, it features handy on-board wand storage with the 1.3-gallon translucent tank, which makes detecting liquid levels easy.

Rainmaker Battery Powered Handheld Sprayer

This sprayer can be handheld, but it also has a shoulder strap. If you are looking for something for a smaller grow, consider the Rainmaker Battery Powered Handheld Sprayer. This little guy holds just 32 ounces and is perfect for small, hobby growers.

The sprayer tip allows for a steady jet stream or adjusts to a fine mist that is gentle on plants and provides excellent coverage. The bottle is made from heavy-duty plastic and has a clear plastic strip for easy viewing of liquid measurement levels.

Best Electric Backpack Garden Sprayer - Rainmaker Battery Powered Sprayer

Best Electric Backpack Garden Sprayer - Rainmaker Battery Powered Sprayer

Making another appearance on our list of the best garden sprayers is Rainmaker, with their 5 Gallon Battery Powered Sprayer. It features a rechargeable battery, with absolutely no pumping or manual work on your end!

What really makes this electric garden sprayer stand out is that it has wheels on it, and can easily be carted around the grow room or out in the field. If this isn’t the best way to use it, no worries - you can simply use the attached shoulder straps, remove the carriage, and carry it like a backpack.

With a capacity of 5 gallons, this is definitely a sprayer for larger grows. It also features four interchangeable sprayer nozzles, so you can fine-tune your spray for the type of use you need. Like the manual sprayers, this one also has a trigger with a lock-on option, which can be engaged for a continuous spray. 

The Rainmaker electric sprayer also has an integrated filter and a four-foot hose. If you want one a tad smaller, Rainmaker also has a 4 gallon 18 Volt Sprayer. This one doesn’t have wheels, however, and is simply a backpack sprayer. This one features a high and low-speed flow rate and can last hours on a single charge.

Final thoughts on best garden sprayers

If you have any questions about one of these garden sprayers, or any other product on our site, give our expert growers a call at 888-815-9763.

A garden sprayer is just one of the many supplies or pieces of equipment you need in your grow room or garden.

Here at Hydrobuilder, we carry everything you need to tend to your plants and get the biggest yields possible. You can view all of our garden care products here!

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