Best Flower Hardener – Know Our Top Products Before Buying

Hey you all, I hope you guys are doing well. I love to maintain a plant book that holds the pictures of every plant I ever had. Looking back at it, I found pictures of a few plants and clones. These plants were the ones who suffered from less stimulation. Due to this, all my plant needed was a flower hardener that boosts and increases the flower cycle. So here in this article, I will be listing a few of my top products. All of these products are tested and compared too. 

What Affects The Flower Density?

We all want our plants to grow at their maximum genetic potential. So while I was studying how to boost a plant or a bud’s growth, I came to know that if you start to plant with a weak seed/clone, you will always end up having a weaker harvest. There is nothing that can promote a weak seed. No matter how great the grow lights are or the best fertilizers you use, there is nothing that will help you at all. 

But, there are some measures that can affect the genetic growth of your harvest. Sufficient lighting and nutrition. It is similar to a weak child having less nutrition. If you feed the child well when he’s young, he will grow stronger. If you feed the right amount of light and food to your weak plant, they can also turn pretty well.

Product Name
Quick Pros

Diamond density rapid flower hardener
1-litre container*6 packs
1. Immediate increase in flowering
2. Healthy nutrient for plants
Kelp4less Bud Hardener

20 pounds of a bag
1. Stimulates the bud development
2. Provides dense and thick plants
TPS Nutrients
5 gallon of a container
1. Increases the density and weight of the plant
2. Is a potassium supplement
TSP Signal Enhancer Plant Nutrient
5 gallon of a container
1. 2x increase in plant growth
2. Speeds up the flowering cycle
Grow More Flower Hardener
25 lb bag
1. Boost buds
2. Provides a good amount of yields

Best Flower Hardener

1. Diamond Density Rrapid Flower Hardener

Diamond density rapid flower hardenerDiamond density activates your yields and flower production. With diamond density, you can see immediate results in your plant and a massive amount of exploding mass on a daily basis. Moreover, you can get 6 containers in one pack. Each one contains 1liter of hardener. 

Key Features:

  • It helps in the immediate increase of the flower cycle. 
  • The formula delivers outstanding results with the help of plant uptake technology. 
  • It is one of the best nutrient solutions made for your plants. 
  • It is a very user-friendly and highly demanded product of all times. 
  • It has every legal substance/element, so you can use this product without any hesitation. 
  • It shows results from week one of the flowering cycle itself.
  • It increases the density and weight of your plant. 
  • It easily triggers the plant to weigh more and grow more.

Directions to use:

  • Shake the container well.
  • Apply diamond density for straight 7 days. 
  • For rapid growth, add 1-2ml diamond density per litre.


2. Kelp4less Bud Hardener

Kelp4less Bud HardenerKelp4less has the best bud hardener for hydroponics, soil and soil-less. After the 1st usage itself, one can notice huge growth in size and mass of flowers. This bud hardener can also be applied with other fertilizers or even nutrient products. Make sure you store this bag in a cold, dark place and seal it every time you use it. 

Key Features:

  • It helps in stimulating the flower development during the mid-bloom stage. 
  • It helps in increasing the size and masses of flowers as well as fruits. 
  • It can be an added supplement to your bloom nutrient regimen. 
  • It guarantees to give you a definite result at the time of harvest. 
  • It is the most effective blend of natural and standard elements. 
  • It is a very suitable fertilizer to boost buds and flower hardener. 
  • It comes in a bag of 20 pounds weight.

Directions to use

  • You can mix ½ tbsp of hardener with 1 gallon of water if you have a small harvesting place. 
  • You can mix ½ lb of hardener with 50 gallons of water if you have more fertilizer consumption. 
  • You can also add it with other fertilizer or nutrient products.


3. TPS Nutrients

TPS NutrientsDo you want a big and dense harvest in your flowers and fruits? TPS nutrients have great products for flowers, fruits and plants. This will surely increase the but development and boost the density of your flowers. So if you want your final yield to enhance the growth, then you must opt for this product. 

Key Features:

  • It helps in the blooming of flowers and buds. 
  • It stimulates the growth of an overall plant. 
  • It increases bud site development and forms denser flowers. 
  • It solidifies buds and promotes thick blooms. 
  • It can be mixed with other fertilizers as well as supplements.
  • It helps in reducing waste and is fully compatible with soil, peat and hydro. 
  • It is specially designed to be sustainable and thus has no acidic components. 

Direction to use

  • You can add this supplement to the feedwater. 
  • Make sure you adjust the ph level to 5-5-6.5.
  • And then all you have to do is just water the plants. 


4. TSP Signal Enhancer Plant Nutrient

TSP Signal Enhancer Plant NutrientAnother great product from the brand TPS is this flower and bud hardener. It assures you to increase the plant nutrient 2x than any other products out in the market. This one is a potassium supplement that can be used for indoor plants and other hydroponic growing environments. Keep checking the features listed below.

Key Features:

  • It comes in a huge container of 640 oz plant food supplement. 
  • It is made from organic plant extracts to increase aromatic terpenes. 
  • It helps to finish blooming faster as it increases the metabolism of the plant and speed cycle too.
  • It helps in increasing the bud density and yield of the flowers. 
  • It is one of the best bud hardeners. 
  • It has self-forming surfactants that bind the excess salts.
  • It is advisable to use this gravity flower supplement for three or four weeks of the bloom cycle. 

Directions to use

  • You can add this signal nutrient to the feedwater. 
  • Adjust the ph level or even add it with another fertilizer or plant food.
  • And now add this water solution to plants.


5. Grow More Flower Hardener

grow more flower hardenerOur last product in the line is from Grow More. If you are looking for a very affordable and organic flower hardener for your plants, then you can have a look at this magical product from Grow More. The quality is very good, and you can definitely give it a try and notice the difference all by yourself. 

Key Features:

  • It is formulated to supply the maximum amount of nutrition to your plants. 
  • It boosts the bud and gives you a good amount of extra yields. 
  • It is highly soluble and can be mixed with water or any other fertilizer too. 
  • It has a special amount of nitrogen, potassium and phosphorus that helps in the rapid growth of the plant. 
  • It is designed to keep at a cool temperature and a dark space to maintain its goodness.
  • You can definitely add this whenever your plant needs extra growth and vigour. 

Directions to use

  • Take the grow more fertilizer in a container. 
  • Mix the adequate amount of water to make the fertilizer liquid enough. 
  • Sprinkle the fertilizer easily. 


Common mistakes growers make which affects the bud density

As discussed above, weak seeds will lead to a weak harvest, but apart from that, growers often tend to make a few mistakes that affect the plants. So read below to know what are the probable mistakes the growers often make. 

Excess plant training

Excess of anything is not a good sign at all. In the case of planting, too, excess plant training is not good for plant health. Topping up your plant will decrease the spread of yield too. 

Early flowering

Do not flip your flower too early. If you are a beginner, then I can understand your desperation to grow your plant. But please do not do early flowering at all. If you want your plant and flowers to be thick and dense, then give proper time, and you will be rewarded. 


When I say excess training is not good, very little training is also not good at all. Defoliation increases the airflow and pushes the plant’s energy away. So make sure you train your plants in a balanced manner. 

Bottom Line:

In my opinion, after reviewing so many products and running lots of tests, Diamond density rapid flower hardener is the best flower hardener for you all. It nicely stimulates your plant and helps to promote growth. If you want a rapid increase in the number of buds, then you must go with it. Other than that, the rest of the products are great too. I hope you must have found your ideal match for your plant. 

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