7 Best Nutrients For Auto-flowering 2023 Reviewed

In summary: FoxFarm Water Soluble Plant Foods was the best nutrients for auto-flowering but with close competition from Liquid Autoflower Flora Micro Combo Fertilizer from General Hydroponics.

But with close competition from Growth Science Organics as it is 100% the best organic nutrients for auto-flower currently on the auto-flowering nutrient market.Best Nutrients For Autoflowering

Fertilizers for auto-flowers should have 5-10-10 or 10-10-10 as the overall N-P-K mix ration fertilizer for potted varieties.

While a 10N-20P-20K auto-flowering nutrient mix is compatible with clusters or ingrown auto-flowering varieties.

Below find our auto-flowering nutrients reviews and buyers guide.

Also check: Best Fertilizer For Weed Clones

Reviews: Best Nutrients For Autoflowering 2023 Reviewed

1. General Hydroponics Fertilizer Nutrients For Auto-flowering Flora Blend Review

When you think of hydroponic nutrients for auto-flowering, consider a flora blend from General Hydroponics. It is a liquid-based fertilizer, making it easy to apply through irrigation water.

Best Nutrients For AutofloweringFurthermore, the high nitrogen content is the other reason why it was the BEST bloom booster for auto-flower
Additionally, Micronized Leonardite is among the primary ingredients.

In General, Hydroponic ensures that a uniform mixture is formed when mixed with water. As a result, this auto-flowering nutrient fertilizer can be formed together with irrigation water through drip irrigation.

Similarly, by being liquid-based auto-flowering nutrients, it can also be formulated through fertigation. Due to this reason, the general hydropic feed was found to be our most appropriate nutrient for coco auto-flowers.

It also comes with beneficial soil microbes. The primary role of soil microbes is to improve nutrient availability to plants.

Major Auto-flowering nutrients present were well balanced. As a result, it is compatible with young and well-established auto-flowering cannabis varieties.

Additionally, General Hydroponics is a rich potash fertilizer for sale. Therefore, when propagating auto-flowering cannabis from cuttings, it induces root development quickly.

  • Soluble in water
  • Decently priced
  • Readily available
  • Potash rich
  • Liquid fertilizer

View on Amazon

Also, check:7 Best Rooting Hormone For  Autoflowers  In 2022

2. Down To Earth Organic Nutrients For Auto-flowering Seeds Review 

Up next, find down-to-earth fertilizer, which is purely an American brand. As a result, it is readily available and comes with a 100% money-back guarantee. It comes with 35% of the total formula ingredients as calcium. As a result, premature leaf and flower buds in auto-flowers are easy to control. Additionally, when growing auto-flowering seeds in pots, the 35% calcium improves the structure of your potting soil. The oyster shells featured in this organic auto-flower fertilizer boost growth of soil microbes.

Similarly, the oyster shells boost the growth of strong enough branches to support large auto-flower blooms.96% of the total ingredients of this product is calcium carbonate. Due to this reason, calcium carbonate’s primary role is to boost overall auto flower immunity.

It is a slow-release nutrient for auto flowers from down to earth. As a result, auto-flowering cannabis will not suffer from either leaf burning or root rot conditions.

  • Organic
  • Non- burning
  • Easy to use
  • Quick result
  • Slow-release

View on Amazon

3. Espoma Feed For Autoflower Company All-Purpose Fertilizer Review

With an overall 5N-3P-3K fertilizer ration find, company purpose nutrient as our Espoma nutrient for auto flowers. It has 45.445% of the overall nutrient as nitrogen. As a result, it boosts both vegetative and bud growth vigor.Best Nutrients For Autoflowering Similarly, the high nitrogen nutrient present enhances the green color of auto-flower leaves. It is also highly soluble in water. As a result, it is 100% easy to formulate.

The manufacturer added beneficial microbes. As a result, the growth of soil microorganisms is boosted. The primary role of soil microorganisms when growing auto-flowers is to improve the availability of plant nutrients.

Similarly, microbes that happen to be beneficial bacteria which play a huge role in breaking down soil nutrients. Naturally grown fungi were also featured. As a result, it plays a massive role in professionally moderating the overall soil pH.

Despite being an organic-based fertilizer, it also comes with a slightly high sulfur. As a result, drought and harsh weather tolerant ability of auto-flowering cannabis are positively modified.

  • Readily available
  • Easy application
  • Well wrapped
  • None burning
  • Granular fertilizer

View on Amazon

4. Arthropods  advanced nutrients for auto flowers Indoor Plant Food Nutrients Review

Up next, find a premium plant food from EarthPods with a slightly high amount of phosphorus, one of the major plant nutrients. Due to this reason, a robust and 100% reliable root system is developed, thus making it to be our preferred, advanced nutrient for auto flowers.Best Nutrients For AutofloweringEarthPods is compatible with in-ground and potted auto flower varieties by being a slow-release fertilizer. Additionally, EarthPods are compatible with fertigation and in-grip irrigation by being soluble in water.

A high amount of calcium and potassium nutrients ensure that EarthPods are also helpful when propagating auto flowers. Proper root development in auto flowers is also boosted by 27.99% of the total phosphorus nutrient.

Uniquely, EarthPod’s auto-flower nutrients are kids and environmentally friendly by EarthPods being environmentally friendly, no harmful gases of aerosol spray will be released into the atmosphere, hence the most appropriate advanced nutrients for auto-flowers.

As a result, EarthPods play a huge role in ensuring that the ozone layer will not be messed up.

  • Organic-based
  • Slow-release
  • Lightweight
  • Highly soluble
  • Slow-release

View on Amazon

5.HydroDynamics Autoflowering Root Hydroponic Nutrients Riot Plugs, 100 Cubes

At our number five of the best nutrients for auto flowers, find Root Riot Plugs from Hydro Dynamics as the best hydroponic nutrients for auto-flowering.Best Nutrients For Autoflowering Solid and reliable roots will be established, with about 60% of the overall nutrient being phosphorus. It will have military-grade packaging.

Therefore, you can easily store the remaining root riots away from moisture and dust. It is also ready to use the product. As a result, no prior mixing is needed.

All the major plant nutrients featured were well balanced. As a result of burning effects, both roots and leaves will not be experienced. Coming from a company that has perfected the art of root fertilizer making.

It has a slightly high amount of magnesium (Mg) nutrients. As a result, overall. This hydrodynamics Root has 30 days back money guarantee.

As a result, we found it to be an advanced nutrient for auto flowers with more positive reviews from previous customers.

Since it is a low-release fertilizer, incorporating it into your auto-flowering potting soil mix just before spring will give your big and conspicuous auto-flower blooms.

  • easy to use
  • durable effect
  • instant result
  • eco-friendly
  • slow release

View on Amazon

6. FoxFarm Liquid Nutrient Autoflowering Trio Soil Formula Nutrients  Review

Find advanced nutrients for auto flowers from fox farm as our top product. Coming with a slightly high amount of nitrogen. As a result, increased vegetative growth it promotes. The potassium (K) nutrient present also promotes the formation of a reliable blooming. Strong roots establishment is 100% encouraged by the slightly high amount of phosphorus that was featured.

Iron (Fe) nutrient also controls a browning condition on cauliflower leaves and stems. Fox Farm is also a 100% unique three-in-one source of cauliflower nutrients. As a result, it has an improved ability to boost blooming and vegetative growth.

Comes with a high percentage of 4%phosphorus (P). As a result, when growing auto flower from cuttings, root development is timely induced. Modeled from organic material, fox farm results in GMO and inorganic compound-free auto flowers.

By being liquid fertilizer. The formulation is easy as it can be added to irrigation water channels.

  • Effective
  • Boost blooming
  • Liquid-based
  • Induces rooting
  • Scotches in excess

View on Amazon

7. Organic 3-in-1 Autoflowers Plant Guard Nutrient Review

Nothing is more interesting than having auto flowers that are 100% fresh and free from sunburns. This is why we featured a 3-in-1 organic auto-flowering cannabis plant guard.Best Nutrients For Autoflowering Uniquely the manufacturer used an airtight container as the wrapping material. As a result, winter sunscald for auto-flowering cannabis is easy to store and also to transport. It has magnesium and calcium as one of the major plant nutrients, due to this reason.

Additionally, Potassium (K+) ensures that lodging in auto flowers just before maturity is timely controlled. What is more amazing about this fertilizer is its slightly high amount of nutrients such as Sulphur(S) and manganese (Mn).

The primary role of Sulphur in this fertilizer is to ensure the formation of brown stripes on auto-flowering leaves. A Sulphur nutrient also significantly ensures that the premature fall of auto flowers is effective.

The high amount of manganese present ensures that the green color of cauliflower leaves has been maintained. Additionally, it offers additional weed control technology. As a result, it is a dual-duty auto flower feed as it plays fertilizer and autoflower weed control fungicides roles.

  • Slow-release formula
  • Dual purpose
  • Nonburning formula
  • Boost budding
  • Slow-release

View on Amazon 

How To Select The Best Nutrients Types For Autoflowering

Picking the proper auto-flowering nutrients is challenging for new and professional auto-flower grower enthusiasts. Today being a dynamic world, hundreds of organic and inorganic auto-flower fertilizers are on the market.

Additionally, proper feeding of auto flowers boosts their growth vigor. Similarly, feeding auto-flower with appropriate nutrients lowers their maturity stages.

Therefore, picking any nutrient brand which is easy to apply and 100% organic tends to be challenging.

Below, find the top three tips and features to consider before picking or checking out any auto flower fertilizer from the market!

Granular Auto-flowering Nutrients 

Consider using granular fertilizers when fertilizing auto flowers in pots or hanging baskets. Granular fertilizers are highly recommended as they employ innovative nutrient-release technology.

Due to this reason, individual granules are fully coated. Hence, available nutrients are only released when auto flowers most need them.

Besides granular nutrients for auto-flowers employing an intelligent release technology, they are also 100% easy to work with. Another fantastic thing is that they have a professional-grade coating.

Liquid Auto-flower Fertilizers

On the other hand, liquid fertilizer is a fast-release source of all the nutrients for all auto-flowering plants. Additionally, liquid auto-flowering plants are easy to apply to and highly concentrated.

When compared with granular fertilizers, liquid fertilizers are slightly more expensive.

Organic vs. Synthetic Nutrients/ Fertilizers For Auto-flowering

Organic Auto flower Nutrient

We highly recommend you go for organic auto-flowering nutrients .suing or auto-flower fertilizers that are 100% organic ensure that the resulting blooms are 100% GMO-free.

Organic auto-flower nutrients are obtained from naturally occurring materials. Therefore, organic Auto-flower is 100% from inorganic compounds and ingredients you are trying to keep your resulting auto-flowers blooms organically.

The only downside about organic-based auto-flower nutrients is that they are slow to resale nutrients.

Inorganic/ Synthetic Auto flower Nutrients

On the other hand, if you are after quick results when growing auto-flower inorganic nutrients is the only way to go. Besides being quick-acting, nutrients are also highly concentrated as they are artificial.

When compared with organic brands, synthetic fertilizers are not only practical but also slightly expensive.

Ease Of Use      

Consider going for an auto-flower fertilizer or nutrient brand which is easy to work with. Consider going for an auto-flower nutrient whose formulation mode can be easily mechanized. Lightweight fertilizers are highly recommended. The less corrosive auto-flower nutrient is easy to work with.

Three Basic Plant Nutrients (NPK) Rich

For this reason, consider picking a product with all three professionally mixed essential plant nutrientsixed. Similarly, a fertilizer brand is accessible if it is 100% non-corrosive.

Similarly, easy-to-work fertilizer requires less working gear and clothing flush buying. FoxFarm was our editor’s pick of easy-to-work nutrients for auto-flowering.


If you are in the best nutrients for auto-flowering shopping hurry, FoxFarm is an excellent source of auto-flower nutrients. Water Soluble Plant Foods from FoxFarm was our top product on this list. It is a 100% high-octane fertilizer with an increased ability to boost blooming.

Additionally, phosphorus (P) was featured in a slightly high percentage. As a result, it encourages the growth of strong roots. When mixed with water, it forms a uniform solution.

Following the manufacturer’s instructions is highly recommended when getting your preferred auto-flowering fertilizer or nutrient. Despite all the auto-flowering nutrients and fertilizers having a common goal, they also come with different modes of formulation. Before selecting any nutrient, consider if you have potted or in-ground auto flowers.


"I'm a keen Horticulturist, passionate about home gardening, lawns, yards, and orchards. What's your favorite? Let's get to work!"

Recent Posts