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How Do I Use Jack's Nutrients During the Clone Stage?


Every great grow starts early. Whether you're growing from clones or starting things from seed, it's important to make sure your youngest plants are getting the nutrients they need to grow into the finest buds.

Luckily for you, this is an area where we really shine here at Jack’s. We have spent a significant amount of time dialing in the nutrient balance and ratios for this short but VERY important stage of the grow cycle.

Our Jack’s 15-6-17 is designed for the 0-14 day period of growth.

We recommend using immediately at first cutting and stick. If you've been following our Grow Schedules (here:, you've already got this formula on your radar.

The 15-6-17 is approved for ALL media types and water qualities meaning we've done the research to ensure that no matter what your setup is, or even if you have to change plans, you're still good to grow.

The enhanced micro nutrient package provides for fast trace element uptake, and our proprietary iron (Fe) chelate blend keeps iron available over varying pH levels.

We've also ensured that the formula is efficient in design so only feeding at low EC + low ppm N.

If you're looking to give your plants a jump start, and increase rooting as well as branching and root establishment, we've got the solution!

Don't be surprised if you also see decrease in the time the plants are in this rooting stage – most of our growers can decrease there time to transplant from 14 days to 10 or even 7!


  1. 125 ppm N

  2. EC ~ 1.0 - 1.1

  3. 3 grams per gallon of water

Cheers to the best crop of clones you've ever had!

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10 comentários

14 de out. de 2023

Two questions here 1) With clone are you adding part B as well? I have the 1kg or 2.2lb bag of Clone 15-6-17 , my first time using it i only used some silica 1/2 tsp of Clone and a beneficial along with floraflex propagator coco peat infused with bio-char cubes and was blown away when i literally could have transplanted by day 5-6!!! Some months down the road i can only assume i left the bag not 100% completely closed and some macro or an ingredient draws up humidity because the bag was still standing but was as if someone had dumped a quart of water into it. (I know some salts naturally attract moisture) Still unsure wha…


23 de set. de 2023

I just switched to jack this last run, I love it, and the support is by far the best I have run across hands down. I use the 321 formula, and just started with cloning and breeding so I picked the Clone feed up, I'm sure I will love it!


Red M
Red M
18 de set. de 2023

Bag say 2.5 grams per gallon and 0.7 EC....

20 de set. de 2023
Respondendo a

Red, we continually experiment with our products and adjust schedules for our Jack's fans as we see needed. Sometimes what's on our bags is the most up-to-date, sometimes we make a change to our recommendations and it makes the bags out of date. Regardless, you can ALWAYS find our most updated information on our Grow Schedules page here:


Ronald R Reppucci
12 de mai. de 2023

Yes I have spoken to the Jacks crew about this and MANY other times and they have always promptly responded. Jacks support has been outstanding over the last 5 years I have been using their products.


06 de out. de 2020

What does the "N" in "125 ppm N" for step one at the bottom of the article?

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