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best nutrients for cannabis in coco

BEST NUTRIENTS FOR CANNABIS

CHOOSING THE BEST NUTRIENTS FOR CANNABIS

Whether you’re a beginner, hobbyist or a professional grower, looking for the best nutrients for cannabis, you will still want the very best nutrients available for your girls, we cover the basics with in-depth and easy to follow information having researched and compiled the leading brands for all types of nutrients for the three main mediums, soil, coco and hydroponics we are confident that you will find the information you are looking for.

If you’re new to growing cannabis, trying to figure out what types of nutrients to feed your plants can be very confusing, not surprising given that many companies make many different products!

As long as you give your plants the right type of nutrients at the right time, you will always be on the right tracks, but here is the many ways different nutrient brands vary:

  • Ingredients: Ingredients vary wildly between brands.
  • Ratios:Different combinations of organic & chemical compounds are used to create the same NPK value although these different solutions react very differently.
  • Soil, Hydro & Coco: Each growing medium requires different nutrient concentrations.
  • Boosters & Supplements: Don’t confuse Boosters and Supplements!

THE BEST NUTRIENTS FOR COCO COIR:

When growing in coco coir it is important that you choose nutrients that are specifically formulated for use with coco coir, these tend to have a higher Magnesium and Calcium content as these compounds bind to the coir, becoming unavailable for absorption by the plants roots.

Hydroponic nutrients will work in place of coco coir nutrients however a Calcium & Magnesium supplement will be needed. As with all growing mediums, it is important to check the pH levels with every feed. Growing with coco-coir a pH level between 5.5 and 6.5 is recommended.

Take a look at our recommendations for pH readers and pH up & down solutions.

THE BEST NUTRIENTS FOR HYDROPONICS:

When the time comes to choose your Hydroponic nutrients, there are a few things to take into consideration that are quite vital to the growth of your plants.

What to look out for?

  • Make sure the bottle states that they’re made specifially for hydroponics.
  • Avoid organic matter, the nutrients should be delivered through minerals.
  • Mineral nutrients are chelated, meaning they can be absorbed within a wider pH range.
  • Check for rich sources of micro nutrients , these are commonly found in soil and massively benefit your plants.

THE BEST NUTRIENTS FOR SOIL:

What sets soil apart from other growing mediums is the ability to grow an organic product, this is possible due to non-inert organic matter such as humus, compost, worm castings and manure being present in the soil that contains many micro-nutrients, most of this matter can’t be absorbed by the plants directly and first has to be processed by beneficial bacteria and fungus that lives in the soil naturally.

The key to successfully growing with organic soil is to create and cultivate a healthy population of diverse soil microbes and fungus, “feed the soil, not the plants” is often said by seasoned soil growers.

most of this matter can’t be absorbed by the plants directly and first has to be processed by beneficial bacteria and fungus that lives in the soil naturally.

The key to successfully growing with organic soil is to create and cultivate a healthy population of diverse soil microbes and fungus, “feed the soil, not the plants” is often said by seasoned soil growers.

The greatest place to get the most recent, update to date knowledge on the best nutrients for growing cannabis the market has to offer.

Best Nutrients For Coco Coir | Ironhead Method

February 08, 2020

Table of Contents

  • General Setup
  • Coco Coir Mix
  • Starting seeds and seedlings

Coco Coir is an excellent medium for growing cannabis, you get the benefit of fast growth you normally see with hydroponics, but its much more forgiving in terms of pH and nutrient strength and more resistant to bacterial infections making it ideal for novice growers to professionals alike.

The Ironhead Method is an advanced feeding method designed for growing cannabis in coco coir. Initially posted in 2015 on Grasscity and updated in 2016, the Ironhead Method was created based off the Lucas Method for growing in hydroponics and the work done by GratefulH3ad for growing in coco coir. Since 2015, the Ironhead method has gained a lot of popularity, and has become a leading method for growing Cannabis in coco coir.

The standard for soil and coco coir grows are fabric pots, because they help to aerate the root system, they are convenient to ship and they are easy to store. Here is an example of what you might want.

When growing with coco coir, you want to aim for 10% runoff each watering. You also want to make sure the plant is never sitting in runoff. This is generally whats used to avoid your plant from sitting in its runoff.

Ironhead suggests a mix of 50/50 coco coir to perlite.

  • When buying coco coir, there are many things to consider – what the manufacturing conditions were like, whether its been washed, whether its been pre-treated with cal/mag etc. The gold standard for coco coir is Canna, where you can buy dehydrated bricks or bags. They are high quality, and all you need to do to add nutrient solution and start growing – no need to wash, pre-treat etc. If you are want to save some money and buy a cheaper coco coir, make sure to follow these instructions on how to wash and buffer coco coir.
  • When buying the perlite, you should get one without any added nutrients. Often times, perlite without added nutrients is sold as “organic”. Here is a good choice for perlite without added nutrients.

Starting seeds and seedlings

A classic way to start seeds when growing with coco coir is using plastic solo cups with holes cut in the bottoms to allow for drainage, though any small pot will work. Ironhead says he only “bottom feeds” the plants until they have 3-4 sets of leaves. By this he means place the cups/pots in a tote and fill the tote with nutrient solution. In my experience this isn’t completely necessary, but while watering you just need to be careful with young plants. You should start the plant with full strength vegetation nutrient solution.

Feed once per day, and aim for 10-20% runoff per feeding. Its easiest to make a large batch of nutrients (like 5 gallons at a time) to make watering each day quick and easy.

  • General Hydroponics Micro 6 mL/gal
  • General Hydroponics Bloom 9 mL/gal
  • General Hydroponics Cali-Magic 1.5 mL/gal
  • House & Gardens Drip Clean 1 mL/gal
  • (Optional) SM-90 5 mL/gal – Nutrilife pulled this from shelves, and its very difficult to get now. You won’t have any problems if you don’t have this. Hydroguard is a good alternative, that will accomplish a roughly similar effect.

After 3-4 sets of leaves

  • (Optional) Root Excelerator 1mL/gal
  • (Optional) Photosynthesis Plus 7.5mL/gal

Quick Ironhead Veg calculator

Same as before, feed once per day and aim for 10-20% runoff per feeding. Its easiest to make a large batch of nutrients (like 5 gallons at a time) to make watering each day quick and easy.

  • General Hydroponics Micro 4 mL/gal
  • General Hydroponics Bloom 10 mL/gal
  • General Hydroponics Cali-Magic 1.5 mL/gal
  • House & Gardens Drip Clean 1 mL/gal – Used to reduce salt build-up within the growing medium, and keep things flowing well.
  • (Optional) SM-90 5 mL/gal – This is a “wetting agent’ which encourages new root growth, but also is good for combating bacteria and pests like Root Rot, Aphids, Thrips, Whiteflies, spider mites and White Powdery Mildew. Nutrilife pulled this from shelves, and its very difficult to get now. You won’t have any problems if you don’t use this. Hydroguard is a decent alternative, that will accomplish a roughly similar effect. The instructions on the bottle for hydroguard are good enough – 2 mL/gal.
  • (Optional) Photosynthesis Plus 7.5mL/gal 2 times a week – Contains healthy bacteria and funghi which will develop a symbiotic relationship with the root system of your plant. Is beneficial for your plant, but Hydroguard can also be used for this application.

Additional products for flowering specific

Canna Cannazym 5mL/gal

  • Breaks down dead organic matter in the root zone, converting into nutrients the plant can use.
  • General Hydroponics Floralicious 1mL/gal – This is a good bloom enhancer, but be sure not to get the Floralicious Plus because it provides too much Nitrogen for your plant.
  • General Hydroponics FloraNectar 2.5mL/gal, 5mL/gal at week 4 – Contains sugars including molasses as well as Magnesium Sulfate. Enhances trichrome production.
  • General Hydroponics KoolBloom 2mL/gal, on day 7 of flowering – Improves bud growth and weight (bulking formula).
  • (Optional, debated) General Hydroponics FloraKleen 10mL/gal for last 2 weeks – There are many debates within forums whether a flushing with pure water (or FloraKleen) in the last 2 weeks is necessary. Some say it puts unecessary stress on the plant towards the end of its life, and others say it flushes out the stored salts in the plant improving taste. Personally I would say if you do decide to flush, use normal pH balanced tap water instead of buying another product – but IronHead himself recommends FloraKleen!
  • Coco Coir is an excellent medium for growing cannabis, you get the benefit of fast growth you normally see with hydroponics, but its much more forgiving in…