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Healthier Plants.
A More Bountiful Tomorrow.

Trusted time-release fertilizer packets for stronger roots, greener growth and more beautiful harvests.

Organic Fertilizer Solutions Serving Growers Worldwide

THE ORIGINAL SLOW-RELEASE FERTILIZER PACKET

Grow green, healthy plants with the original slow-release fertilizer packet. Nutri-Pak® is the leading fertilizer supplier, offering packets scientifically developed over 50 years ago, supported by certified studies and lab results. We have been on the market for over 30 years and are currently manufactured by Kirkwood Industries, Inc., which also owns our trademark.

Our fertilzer blends and packets use an innovative method to deliver nutrients directly to a plant’s root zone . This approach prevents nutrient loss caused by leaching or runoff. Use our products to reduce labor and supply costs while eliminating the risk of plant damage from over-fertilization. Additionally, it is safer for users since our packets are installed unopened, ensuring there is no direct contact with the fertilizer. Due to its controlled release, our product is also environmentally friendly, so there is no risk of contaminating the surface or groundwater.

Contact us to purchase our fertilizer blends today or to become one of our commercial suppliers and distributors for national or international sales.

How It works

A Smarter Way to Feed Your Plants

See the difference between Nutri-Pak® slow-release technology and conventional fertilizing methods.

Nutri-Pak® Hazard-proof Packets

We effectively prevent groundwater and surface pollution by containing nutrients within a sealed micro-pore packet. At the same time, the fertilizer is released through micro-pores at a rate that matches the plants’ needs. Regardless of how much water from rain or irrigation passes through the soil, only a minimal amount of fertilizer leaks out of the packet and goes directly to the plant’s root zone for uptake. This time-releas e prevents runoff and leaching, keeping nutrients consistently available for plant nutrition.

Conventional Fertilizing Methods

When fertilizer is used in block or spike form or applied topically, it breaks apart quickly, allowing irrigation or rainfall to wash nutrients through the soil and into our vital groundwater supply. Fertilizers broadcast on the surface often run directly into storm sewers, rivers, lakes, and streams. As a result, valuable nutrients may not be available or reach the plants. That’s why we are revolutionizing the traditional methods of gardening and fertilization for the better with our timerelease fertilizers and blends, making them safer and more environmentally friendly.

Our Products

Customer Reviews

Posted on Google Google
Joseph profile picture
Joseph
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Time release fertilizer product that is environmentally safe is manufactured and distributed by a family owned business.
Lynn B.
★★★★★
Time Will Tell
07/01/26
This fertilizer, Nutri-Pak, is so easy to use. There's no measuring, no big bags. and no guess work. The directions are on the pouch, so easy! Since I'm an elderly gardener these things matter. The final judgement will come when I see that my thriving new shrub approves.
Cathy D.
★★★★★
Unbelievable
06/10/26
Wow! The bushes were fresh and shipped perfectly. I got healthy honey suckle bushes. They all have many new shoots. They are growing already!
Kathleen L.
★★★★★
Helpful recommendation
06/08/26
Your suggestion to use the Nutri-pak made it so there was no guessing game at planting. I really like the fact that it will feed up to 3 years. Thank you.
Brenda M.
★★★★★
Used 2 packages. Will find
06/15/24
Used 2 packages. Will find out next spring how well they work.
Bethany L.
★★★★★
So far so good👍🏼👍🏼👍🏼
05/19/24
Used 2 packages. Will find out next spring how well they work.
Jane M.
★★★★★
tree doing well--like the shape
09/23/23
tree doing well--like the shape and size--deer also enjoying so it is now fenced
Judy R.
★★★★★
must work - bare root
07/03/23
must work - bare root lilacs appear to be doing very well
Mary T.
★★★★★
My plants came in a
06/11/23
My plants came in a proper box to keep them safe. They were in great condition and now that they are planted they’re thriving. I highly recommend getting your plants from here.
Samuel S.
★★★★★
worth undetermined
09/18/26
I can't review the quality of this fertilizer packet which I have just used in a planting. It is too son to formulate an opinion as to the efficacy of this packet. It arrived along with the plant and was easy to apply to the plant site.
Rebecca L.
★★★★★
I don’t really know how
05/19/24
I don’t really know how to rate this yet. The package of fertilizer is very convenient. I wish I would have known that each tree I planted should of had 2 packets.