Keep Garden 16 Liters Pump Spray Bottle – Backpack Sprayer for Foliar Feeding & Pest Control

The Keep Garden 16 Liters Pump Spray Bottle is the heavy artillery you need to treat your crop professionally, comfortably, and without wasting a single drop of product, transforming tedious maintenance tasks into a quick and efficient process. This backpack-style sprayer is designed to handle high volumes of nutrient solution or pest control treatments, ensuring that every leaf in your grow room or garden gets the coverage it needs.

Why you need to upgrade from a hand sprayer

Problem: Too many growers try to manage medium to large crops using small, handheld trigger sprayers or 2-liter pressure bottles. This approach forces you to refill the tank constantly, breaks your workflow, and often leads to hand cramps and wrist fatigue before you’ve even finished half the crop.

Agitation: Sticking to small tools for big jobs isn't just annoying; it affects your results. When your hand gets tired, you start rushing, leading to uneven coverage where pests can survive or nutrients aren't absorbed. Plus, the constant bending and reaching with a heavy bottle in your hand puts unnecessary strain on your back and shoulders, turning a simple foliar feeding into a physical workout you dread.

Solution: The Keep Garden 16L is the versatile solution that scales with your ambition. By shifting the weight to your back with comfortable straps and providing a large 16-liter reservoir, it frees your hands to focus solely on aiming the lance. Whether you are battling a spider mite infestation or applying a biostimulant, this tool allows you to work faster, more effectively, and with zero physical fatigue.

Use case 1: The dense Indoor Jungle

If you are running a Sea of Green (SOG) or have a grow tent packed with lush vegetation, reaching the back plants can be a nightmare. With this backpack sprayer, you don't need to move pots around or contort your body. You simply wear the tank, pump the lever with one hand to build pressure, and use the long aluminum lance to penetrate deep into the canopy.

The adjustable nozzle is a game-changer here. You can set it to a fine mist for cannabis fertilizers applied foliarly, ensuring optimal absorption without soaking the buds. The consistent pressure allows you to reach the undersides of the leaves—where pests hide—without struggling. It’s about working smarter, not harder, in your indoor sanctuary.

Use case 2: Outdoor crops and large gardens

For outdoor growers, the challenge is distance and volume. Walking back and forth to the tap to refill a small sprayer is a waste of valuable sunlight time. With 16 liters on your back, you can cover a significant area or treat large, tree-sized plants in a single run. The materials are built to withstand the elements, and the included "bell" accessory is perfect for applying herbicides around the base of your plants without drift affecting your precious crop.

In this scenario, the durability of the aluminum lance really shines. Unlike plastic wands that can snap if snagged on a branch, this one is built to last. It gives you the reach you need to treat the top colas of tall sativas without needing a ladder, keeping you safe and your plants protected.

How to choose the best use for you

Not sure if you need this much capacity? This sprayer bridges the gap between hobbyist and pro. It adapts to your specific situation depending on how you configure it.

• If you value speed: Fill it up completely and blast through your chores in record time.
• If you value precision: Use the adjustable nozzle to target specific problem areas without drenching the whole room.
• If you have back issues: The padded straps distribute the weight evenly, making it far superior to carrying a 5L jug by hand.

Advantages and benefits that show up in every case

• Massive Capacity: 16 liters means fewer trips to the tap and more time caring for your plants.
• Ergonomic Comfort: Padded backpack straps save your back and free your hands for better maneuvering.
• Durable Construction: The aluminum lance resists corrosion and accidental drops better than standard plastic ones.
• Versatile Application: Perfect for insecticides cannabis treatments, fungicides, or nutrient boosters.
• Easy Maintenance: Designed with few wear parts, making it easy to clean and maintain for years of service.
• Controlled Pressure: The manual pump lever allows you to maintain constant pressure without stopping to pump a handle on top.

Frequently Asked Questions

Can I use organic fertilizers with this sprayer?

Absolutely. Just make sure to filter any homemade teas to prevent clogging the nozzle. It works perfectly with liquid organic nutrients found in our Pump Spray Bottle section.

How do I clean the tank after using chemicals?

Rinse the tank thoroughly with warm water and a little neutral soap. Pump the soapy water through the lance to clean the internal tubes, then rinse again with clear water. This prevents residue buildup.

Is it heavy when full?

16 liters of water weighs 16kg, plus the unit's weight. However, the backpack design distributes this weight across your shoulders and back, making it feel much lighter than carrying a heavy bucket by hand.

Does it come with different nozzles?

Yes, it includes an adjustable nozzle that lets you switch between a fine mist and a direct jet, plus a protective bell for targeted ground applications.

Personal Experience of Pevgrow’s CEO (Alan)

"I honestly can't imagine going through an outdoor season without a backpack sprayer like this. When you have plants that are over 2 meters tall, a hand sprayer is just a joke. I use the Keep Garden 16L specifically for preventative neem oil applications during the vegetative stage. The pressure it builds up is fantastic for flipping leaves over and getting the product exactly where the bugs try to set up camp. My favorite feature? The pump lever on the side—you can keep the pressure high while you walk, so the spray never gets weak."