Best Nutrients For Flowering Stage

10 Best Nutrients For Flowering Stage & Why

As you might know, if you are growing weed, you cannot just leave them in dirt or water and hope that they grow. Whether you are growing your pot in soil or using a hydroponic system, your weed plants need the right nutrients. Yes, the nutrients for the flowering stage of marijuana growth are a bit different from the flowering stage nutrients which these awesome plants require.

When it comes down to it, you need to have the right kind of nutrients to provide your plants with during the flowering stage if you hope to get the maximum yield possible, and you want really potent buds too. That being said, finding the ideal nutrients for weed plants can be a bit tough. However, this is what we are here to help you with today, to find the best nutrients for flowering stage of marijuana growth.

10 Best Nutrients For Flowering Stage of Marijuana

flowering stage of weed

Here we have what we think are the best options at the moment. We have some great picks that work for growing in soil and some for hydroponic grow operations too.

1. Technaflora Recipe for Success Starter Kit

Here we have a great nutrient bundle for you to look at, one that actually comes with a whole lot of different nutrients, products, and supplements to provide your weed plants with the nutrients they need for growth from beginning to end.

To be clear, this Technaflora Starter Kit comes with absolutely everything you need to grow a weed plant from start to finish. For one, it comes with Rootech Cloning Gel, which is excellent for providing your plants with a health root system during the vegetative state.

When it comes to nutrients for the flowering stage, here you get several different nutrient blends which are perfect for stimulating fast and healthy growth during the flowering stage, it also comes with a flower stimulant, a MagiCal nutrient blend, as well as other fertilizers and nutrients.

When it comes down to it, here you get 10 different nutrient blends all in one single package, and this should be good enough to last you from start to end. Just to be clear, here you get the following included. Do keep in mind that this kit is for growing weed in soil.

  • 500 ml B.C. Grow
  • 500 ml B.C. Boost
  • 500 ml B.C. Bloom
  • 125 ml Thrive Alive B-1 Red
  • 125 ml Thrive Alive B-1 Green
  • 7 g Rootech Cloning Gel
  • 125 ml Awesome Blossoms
  • 125 ml MagiCal
  • 250 ml Root 66
  • 250 ml Sugar Daddy

2. Fox Farm Liquid Nutrient Trio Soil Formula

Here we have a slightly smaller nutrient kit for your weed plants, but it does still come with 3 different products. Keep in mind that this Fox Farm Soil Formula is designed for growing weed in soil. Here you get the following included.

Fox Farm Grow Big Plant Food

This is a plant food which contains an NPK ratio of 6-4-4 and it is the perfect thing to use for your marijuana plants during their vegetative stage. It is very easy to use.

Just mix with the right amount of water as directed and feed your plants daily. It helps to promote fast and strong vegetative growth, as well as a strong root system too.

Extra Strength Tiger Bloom Fertilizer

Tiger Bloom contains an NPK ratio of 2-8-4 and it is the perfect option to go with for marijuana plants in their flowering stage.

This stuff works really well at spurring on growth during the flowering stage, especially when it comes to creating buds and colas.

Fox Farm Big Bloom Liquid Plant Food

This stuff has a very low NPK ratio of 0.01 – 0.03 – 0.7.

No, it is not very strong, but this stuff can be using throughout all growing cycles and the point of it is to help speed up and increase nutrient cycling and nutrient synthesis, thus making the other two products on the list today much more effective.

3. Botanicare Pure Blend Pro Bloom

Here we have a very simple product, not a whole kit like the others we have reviewed so far. Here you get a large bottle of flowering nutrients for your weed plants, and that is it.

However, although it does not come with a bunch of other fancy stuff, this Botanicare Pure Blend Pro Bloom does do its job quite well. Something we do like here is that this product is organic and natural, so while you still have to flush plants in the end, at least you can be sure that only organic nutrients were used.

What you need to know here is that Botanicare Pure Blend has an NPK ratio of 2-3-5, which is more than ideal for marijuana plants in their flowering stage.

This product comes with many different benefits including the fact that it helps to increase nutrient absorption and synthesis, it increases the metabolic rate of the plant, it speeds up growth, keeps roots healthy, and of course, it will help your pot plants grow really nice, large, and potent buds that will be a joy to smoke.

What is also important to note about this Botanicare Pro Bloom, is that it can be used when growing weed in soil, with a hydroponic system, or in coco coir as well. When it comes down to it, if you just want a simple flowering nutrient solution, this is a great way to go.

Let’s not forget the fact that this stuff also contains natural insecticides and fungicides, which kill fungi and insects on contact to keep your weed plants safe.

4. Greenleaf Nutrients Bud Explosion

Here we have another simple yet solid choice to keep in mind when it comes to nutrients for the flowering stage of your weed plants. Greenleaf Nutrients Bud Explosion is an ideal choice for all stages of the flowering cycle, which includes the initial, mid, and final flowering stages.

Now, it does not contain any nitrogen and it has an NPK ratio of 0-19-39, which means that it contains an insane amount of phosphorus and potassium, which is perfect for your weed plants.

There is a reason why it is called Bud Explosion, an it is because the high PK content helps to greatly increase and speed up bud growth during the flowering stage.

You may want to supplement a bit of extra nitrogen, but potassium and phosphorus are by far the most important nutrients to supply your pot plants with during the flowering stages, which is exactly what you get with this product.

What is also nice about  Greenleaf Nutrients is that it can be used for both hydroponic weed growth as well as for growing weed in soil. At the end of the day, this Greenleaf Nutrients Bud Explosion is easily one of best nutrients out there for weed plants.

5. KRUSHD KOMPLEXI-Tea for All Growth Stages

Here we have quite the interesting product to go with, because KRUSHD KOMPLEXI-Tea is made with composted tea. This may sound a little odd, but it does come with many different benefits for your marijuana plants.

Now, what you need to know here is that this stuff has an NPK ratio of 1.5-1.5-1.5. This is why it is actually ideal for all of the growth stages of your marijuana plant, all the way from the seedling stage to the final day of the flowering stage.

As you might recognize, it is not designed specifically for any one growth stage, but does just fine for all of them.

It might not be the number one choice for flowering weed plants per say, but it does make for a really great option if you are on a limited budget and want to use just one single and fairly effective product from start to finish.

This stuff is designed to provide both great vegetative growth and flowering growth, not to mention that it is super user friendly too.

6. DutchPro Explode

Here we have another great product to go with if you are looking for marijuana flowering nutrients. What is important to note here is that this stuff does not really contain any nitrogen, so you may want to supplement a bit of that for increased growth.

However, when it comes to flowering your marijuana plants, the most important nutrients are of course phosphorus and potassium, which this DutchPro Explode contains in abundance.

This stuff is used worldwide by commercial marijuana grow operations, so you know that it is the real deal, because it works like a charm at massively stimulating fast and big time weed bud growth.

DutchPro Explode also contains a ton of other minerals and micronutrients to help protect your marijuana plants from disease, to help them grow faster and better, and to increase nutrient synthesis and absorption as well.

It’s a very simple yet effective marijuana flowering nutrient blend that will truly cause your buds to turn out much larger and more potent than they otherwise would.

7. Element Bloom Booster Flower Fuel

Something to note right off the bat about this Element Bloom Booster Flower Fuel is the fact that it can be used for any weed growth medium.

You can use this stuff for weed being grown in hydroponic setups, in soil, aeroponic setups, coco coir, peat, and more. It’s a great all around nutrient blend and bloom booster for the flowering stage that can be used for any growth medium.

In terms of its NPK ratio, this sits at 1-34-32. As you might recognize, it does not contain much nitrogen, so you may want to supplement this a bit, but the bottom line is that it contains a whole lot of the P & K nutrients, which are both vital for fast, healthy, and big flowering buds all throughout the flowering stage.

Element Bloom Booster Flower Fuel actually includes over 40 different proprietary ingredients which come with a ton of benefits including faster nutrient synthesis and absorption, bigger and faster bud growth, increased root health, resistance to disease, and so much more.

If you need a super powerful bloom booster to provide you with absolutely massive yields, Element Bloom Booster is a really good option to consider.

8. General Hydroponics MaxiBloom

General Hydroponics MaxiBloom is a great option to go with when you are growing weed using a hydroponic setup. This stuff is designed so that everything included is 100% water soluble, so your marijuana plants can easily absorb the nutrients in a water based hydroponic grow operation.

These are dry concentrated nutrients that just need to be mixed with water and fed to your plants. It really does not get any easier than that.

Now, what is important to note here is that General Hydroponics MaxiBloom has an NPK ratio of 5-15-14, so it does contain a fair amount of nitrogen, which is important, but it also contains a whole lot of potassium and phosphorus, which are of course the two main nutrients needed for the marijuana flowering stage.

It has an uncanny ability to speed up nutrient absorption and synthesis, to speed up bud growth, and to speed up growth overall.

Keep in mind that this product also comes in the “MaxiGro” variety, which is designed for use during the vegetative state of marijuana growth, as it has an NPK ratio of 10-5-14, thus making it great for root development and accelerated vegetative growth.

If you want simple and effective nutrients for vegetative growth and the flowering stage, this General Hydroponics MaxiBloom combined with the MaxiGro is a good combo to keep in mind.

9. General Hydroponics Flora Grow, Bloom, Micro Combo Fertilizer Set

Here we are going back to a nutrient kit that can be used all throughout the growth of your marijuana plants. The fact of the matter is here you get 3 different products, and each one of them has a different benefit and purpose, but they do all work towards growing bigger, better, and healthier marijuana plants.

Do keep in mind that all of these nutrients here are specifically designed for use when growing weed using a hydroponic setup.

What is also nice about this Combo Fertilizer Set is the fact that it has already been pH balanced for you, which is a really big deal no doubt.

Let’s take a look at the 3 individual products that come included with the General Hydroponics Flora Grow, Bloom, Micro Combo Fertilizer Set;


The first bottle of nutrients is called FloraGro and it is specifically designed to increase and speed up vegetative growth for a strong stalk, lots of branches, and a healthy root system.

It contains an NPK ratio of 2-1-6.


As you might be able to tell by the name of it, FloraBloom is designed to provide your plants with a whole lot of the PK nutrients to stimulate fast, healthy, and big flower or bud growth.

This stuff contains an NPK ratio of 0-5-4. This is also a great product to keep in mind because it helps to create much more fragrant and potent marijuana buds.


FloraMicro is a good option to go with because it can be used during all of the growth stages.

It is designed to provide your weed plants with important elements such as nitrogen, potassium, calcium, and other trace elements, making it a great supplemental nutrient blend.


This final product here on our list today is all about providing your marijuana plants with the best possible nutrients for all stages of growth. As you might recognize, this is a kit which comes with 8 different kinds of nutrients included. Keep in mind that this so called Go Box, is intended for people who are growing marijuana in soil.

There are various supplements which you get inside of the GO Box, which include CaMg+, BioRoot, BioWeed, BioBud , BioMarine & Diamond Black, which all help to promote disease immunity, nutrient synthesis, and all around healthy and fast growth.

Moreover, here you also get bottles of nutrients which are ideal for the vegetative phase of marijuana growth, as well as for the flowering stage too, plus so much more.

The benefit of this GO Box  is that it comes with literally all of the nutrients and supplements you need for your weed plants to get them from seedling to harvest. It is one of the best choices for beginners out there right now.

Why Are Nutrients Important During The Flowering Stage?

Just to be clear, the flowering stage of the marijuana growth cycle is all about cola and bud growth, or in other words, the growth of the marijuana flowers which you will end up drying and curing, and then smoking, vaping, turning into edibles, or extracting the THC from.

Therefore, to get the biggest, best, and most potent yields, you want to supply your weed plants with the proper nutrients, and the right amounts of them, during the flowering stage of growth.

What Is NPK? – The Main Marijuana Nutrients

NPK is actually an acronym for the 3 main nutrients which marijuana plants need for ideal growth. N stands for nitrogen, P stands for phosphorus, and K stands for potassium.

What is important to keep in mind here is that the nutrient requirements of marijuana plants during the vegetative state is different from the flowering state.

During the vegetative state, as well as the very early flowering stage, in order to spur on a lot of vegetative plant growth, you want to use nutrients with high nitrogen levels, medium phosphorus levels, and fairly high potassium levels.

However, during the flowering stage, you want to decrease nitrogen levels, slightly increase phosphorus levels, and greatly increase potassium levels.

What is important to note here is that for the flowering stage of marijuana growth, you want to ensure that you do not use nutrients that contain a lot of nitrogen, as they may actually restrict fast and big weed bud growth.

However, for this stage, both phosphorus and potassium are extremely important in order to get really big buds and to create an awesome flowering stage with tons of new growth.

What About Organic Nutrients?

One thing to note here is that when you are growing marijuana in soil, you would be wise to go with organic nutrients. This way, you know exactly what you are feeding your plants, and therefore there is nothing to worry about when you consume it.

However, beware that you should not really be using organic nutrients for hydroponic grow operations, as they may cause the growth of bacteria in the water and may mess with pH levels.

Flowering Nutrients & Sativa vs Indica

Sativa and Indica

Something else not note here is that there are of course 2 main different kinds of marijuana, these being cannabis Indica and cannabis Sativa.

What you need to know here is that cannabis Indica plants can usually handle a lot more nutrients than cannabis Sativa plants.

Simply put, cannabis Sativa plants do not require as high a level of nutrients for proper growth, which is true for both the vegetative state of growth as well as the flowering stage.

Before you begin feeding your weed plants any nutrients, it is wise to look up the nutrient requirements of the specific marijuana strain you are growing.

We have covered a detailed guide on the different strains, you can check it out here.

How To Get The Biggest Buds During Weed Flowering – Some Tips

Of course, you want the highest yield possible from your weed plants, which is why right now we are going to give you some general tips on how to get the biggest buds during the flowering stage of marijuana growth.

  • Remember that maintaining the proper pH level will allow the marijuana plant’s roots to absorb the maximum amount of nutrients possible. The wrong pH level will result in an inadequate root system that is unable to properly absorb nutrients.
  • Another great way to ensure that your pot plants engage in the proper synthesis of nutrients is to ensure that they get more than enough light.
  • Keep in mind that during the flowering stage, maintaining the proper temperature and humidity for your weed plants is also very important, and goes a long way in determining the amount of nutrients your pot plants can absorb, and how well they are put to use. Keep in mind that this also has to do with air ventilation and circulation.
  • If you want to ensure that your plants get more light, engaging in weed plant topping or training your weed plants by tying them down is also something you can do (we have covered a good guide on topping here).



Something that we really cannot stress enough here is that it is very important to provide your plant with the proper amount of nutrients, but not too much. Remember guys, there is such a thing as nutrient burn, which happens when you supply your pot plants with too many nutrients.

So, for one, always remember to look at the soil you are using, if you are using soil. Most high quality potting soils for weed already contain a fair amount of nutrients, which means that feeding liquid or powder nutrients to your pot plants is not quite as important.

Moreover, be sure to always read and follow the directions on the bottle to ensure that you don’t overfeed your pot plants with so many nutrients that you end up burning them.


There you have it folks, more or less everything you need to know about the right nutrients to use during the flowering stage of cannabis growth. In terms of the best nutrients for flowering stage of marijuana growth, we would absolutely recommend looking into one of the products which we have reviewed above.

Remember folks, using the right nutrients and the right amounts of them will make all of the difference when it comes to maximizing the quality and quantity of your final yield.

Image Credits

My 420 Tours [CC BY-SA 4.0], via Wikimedia Commons