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You are here: Home / Gardening Tips / Fertilize / Fertilizer Applicator for Fertilizing Containers, Nursery Pots and Plants in the Landscape

Fertilizer Applicator for Fertilizing Containers, Nursery Pots and Plants in the Landscape

Updated : March 9, 2025

10 Comments

I am very proud to say that this super time-saving, back-saving fertilizer dispensing device was invented by one of our very own Backyard Growers.  After bending over to fertilize a few hundred or a few thousand plants John quickly realized that there had to be a better way.

fertilizer-applicator
Duston McGroarty using the Automatic Fertilizer Dispenser.

This device is amazing.  All you do is fill the reservoir bottle with a granular, slow-release, fertilizer and slide the handle up and down.  Each short stroke delivers one tablespoon of fertilizer.  If you need a smaller dose of fertilizer the applicator can easily be adjusted to deliver a smaller amount by simply slipping on a small plastic clip.  That takes about 5 seconds!

This is Important!  Regular Garden Fertilizer Will Kill Your Plants!

I don’t mean that it might kill plants.  I mean that it absolutely will kill your plants.  You have to use a good quality slow-release fertilizer like Osmocote.

This fertilizer applicator makes it easy to target individual plants or containers.
This fertilizer applicator makes it easy to target individual plants or containers.

All you have to do is position the applicator over the plant that you want to fertilize, pump the handle just once and the exact amount of fertilizer is dispensed.  If you are fertilizing plants in larger containers just pump the handle more than once.  It literally only takes seconds to fertilize a plant allowing you to do hundreds, maybe even a thousand or more in an hour.

This device comes with an extra reservoir bottle so you can fill two bottles and when the first goes empty just quickly screw on the second bottle.  The device also comes with a custom-made funnel that allows you to fill the bottles quickly and easily.

Slow release fertilizer being applied quickly and easily.
Slow-release fertilizer being applied quickly and easily.

The little brown balls that you see in these nursery containers are the slow-release fertilizer pellets that we use.  Unlike garden fertilizers, these pellets are coated and designed to release the fertilizer over a period of months as the plants need it.  Regular garden fertilizer is not coated and it will release all of the nitrogen that it contains as soon as you apply it.  That will, without a doubt, kill your plants.   Nursery plants just cannot use that much nitrogen all at one time.

Slow Release Fertilizer in a nursery container.
Slow Release Fertilizer in a nursery container.

This automated fertilizer applicator has a history of success with professional growers.  Not only do many of our Backyard Growers use this device, but many large, full-scale wholesale nurseries are also using it as well.

The video below demonstrates how the applicator works and it also shows just how easy it is to set up…

From a satisfied user of this product:

“We have used this fertilizer applicator for more than 3 years now-IT WORKS!  And it is way easy on your back and knees-especially when you have hundreds n hundreds n hundreds of pots to fertilize within that short time when you are also trying to do hundred n one other things!  Also saves on spilling (always happens when you do it manually !) and kneeling down on wet areas trying to reach that pot in the back, and getting poked in your eyes in the process!! Best is-any problem with the machine-John is the best guy to deal with! He doesn’t disappear or ask for extra money to provide you with any help you might need! BTW, John or Mike did not ask me to write this!”
—Backyard Grower from Georgia

Comments from another grower:

“I have been using this fertilizer applicator for a couple of years and won’t do without it.  I have a bad back among other things and this is a lifesaver. I don’t know about you, but my time is worth money so the amount that is wasted versus the amount of time I save comes out to benefit me. Just a note and kinda of a pat on the back to John, I recently contacted him about a problem I had with the applicator, a problem that was my fault.  It actually fell and I broke the tip. I contacted John and without any hesitation he is sending me a new tip. That’s good business and I just wanted folks to know who are thinking about getting one what type of folks you will be dealing with. You’ll have to pull mine from my ‘cold dead hands’!”
—Bob, Backyard Grower from Pa

From a Grower in Washington State:

“We really like and use this fertilizer applicator. We bought it so that we would not be spending so much time on putting the Osmocote into containers, but found that we were also saving on Osmocote since we wasted less. This is a useful tool, not a gimmick.”
—Heather from Washington State

Click here to visit the Fertileeze website to place your order »

Take a gander at these posts...

  • How to Make Homemade Fertilizer
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  • Which Fertilizer Is Best?

Comments

  1. john j williams jr says

    April 9, 2024 at 9:41 am

    still able to purchase thru this site Mike? transaction wouldn’t go thru

    Reply
    • Mike says

      April 10, 2024 at 7:47 am

      John,

      Try the products link at the top or respond to any email and Duston will get you a good link.

      Reply
  2. Brian says

    April 16, 2014 at 11:41 am

    Mike,
    With all do respect are you suggesting that the fertilizer production companies and distributors are knowingly misrepresenting their product?
    Nothing ceases to amaze me anymore. I had never heard that claim before and thanks for the heads-up!

    Reply
    • Mike says

      April 16, 2014 at 7:08 pm

      Brian,

      No, that’s not what I mean. What I mean is that garden fertilizer is great for a garden, but no good at all for a container grown plant. Regular fertilizers are designed to released 100% of their nitrogen almost immediately. Ornamental crops cannot deal with that much nitrogen at one time.

      Reply
  3. John, Backyard Growers member from Florida says

    November 17, 2013 at 11:03 pm

    I have used John’s Fertilizer Applicator for almost three years now and and must say it has worked flawlessly for probably 100,000’s cycles now. It has absolutely no wear and the metering is still precise after all this time. It has saved thousands of labor dollars by now and is so simple a child can master it. About a year and half ago, John happened to call me on a day that we were at that very time using the Fertilizer Applicator and we were on our fourth bag of Osmicote that day and John was so proud to hear the great comments from the nurserymen who were using it at that very time he called.
    There is no way we could have the success we do without using a fast, (very fast!) flawless feeder. The Fertilizer Applicator is fast, and more dependable than units costing 5 times or more and just plain fun to use! If you have ever spoon feed 25,000 plants on your hands and knees, buy this and you too will know what fun is. To a great invention and a real gentleman, thanks John!

    Reply
  4. Dean Fritch says

    November 17, 2013 at 2:34 pm

    Dear Mike,
    Thank you for sending me these informative “News letters” I don’t always read them but I do have a special file I post them to everytime I get them so I can use them for future reference.

    I have been using “Osmacote” for the past couple years in everincreasing amounts on just about everything I plant in my garden and flowerbeds. I like the product! This past growing season I used at least close to 1 1/2 Galons of it. I think I had the best looking yard and vegetable garden I have ever raised! However, I had no scientific way of applying the fertalizer I just dug a hole about two to three times bigger than The plant I was planting then sprinkled in some fertalizer and started to backfil with soil and then added some extra fertalizer and continued to completely fill in the last of the soil around the plant. I thought this was the best way of applying the “Osmacote so each plant had plenty of fertalizer. This became QUITE A PROJECT even for my realitively small yard and garden. It was quite a revelation to me to se that you only use a Tablespoon full per plant and the BIGGEST SUPRISE was to see you just apply it on top of the ground!!!!! I am not fully convinced with this method as I have always felt the plants bennefit more by having the fertalizer right around the roots!

    I would be interested to hear your take on this theory.

    Thank you again for your help and your informative “News letters”.

    Dean Fritch

    1

    Reply
    • Mike says

      November 18, 2013 at 5:49 pm

      Dean,

      You really have to think about how Osmocote works. It’s slow release, takes 3 to 4 months for it to release if with their fastest releasing product. As it releases it will leach into the soil. Keep in mind, we are fertilizing containers that have to be watered daily during the growing season. One tablespoon is good for say a one gallon plant. Larger plants need a bit more.

      Reply
  5. Cheryl says

    November 17, 2013 at 1:50 pm

    LOL, Mike! When I saw the subject line in my email, I thought it was going to be a picture of your miniature donkeys!
    This gizmo is really cool, though. (And so are the donkeys.) 🙂

    Reply
  6. Corrinne says

    November 13, 2013 at 2:05 pm

    Dear Mike….What a very cool piece of ” Garden Engineering “. Simple, effective,and easy to use.

    Thanks for sharing.

    Corrinne

    Reply
    • Mike says

      November 13, 2013 at 3:42 pm

      Thanks Corrinne, this really is a wonderful tool. So easy to use.

      Reply

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