Homemade Fertilizer: 15 Best Organic Recipes for All Plants

Homemade fertilizers always create an ideal growing environment for plants. You need to use them properly to ensure optimal growth. The amount of fertilizers you apply is critically important. Excessive use of strong fertilizers creates a negative impact. Root damage is the most common adverse effect. You can find symptoms of fertilizer burn, such as brown-curled leaf edges. Overuse of fertilizers force leaves to wither and fall down.

If you prepare natural DIY fertilizers and use them efficiently, you can expect the best results. You can come across many common items in and around your home that can be converted as fertilizers. Here are the 15 most reliable, affordable, and convenient homemade fertilizers that ensure maximum plant growth without causing any damage:

1. Blackstrap Molasses

Blackstrap molasses contain many plant-friendly nutrients, including magnesium, carbon, copper, iron, potassium, sulfur, manganese, calcium, and potash. It nourishes highly useful bacteria to maintain the plants and soil healthy.

How to make a fertilizer using blackstrap molasses? Firstly, you need to dissolve a combination of alfalfa meals and Epsom salts (one cup each) in four gallons of water. Then, one tablespoon of blackstrap molasses must be added to make your homemade fertilizer. Another method is to use a combination of steeped compost tea and blackstrap molasses.

2. Coffee Ground

Coffee ground is one of the most popular homemade fertilizers available today. The plant-friendly ingredients available in used coffee grounds include nitrogen (approximately 2%), potash (below 1%), and phosphoric acid (about 0.33%).

Coffee grounds are excellent DIY fertilizers for plants with an acidic nature like avocados, blueberries, camellias, evergreens, roses, azaleas, and similar types of fruit trees. The best way is to spread dry coffee beans around your plants and let them absorb the nutrients.

3. Aquarium Water

Aquarium water makes a perfect fertilizer because it contains fish waste. When you clean your aquarium, you can use the water available on the tank as a fertilizer. It encourages optimal plant growth. When it comes to using aquarium water, don’t use the water from a saltwater tank.

4. Eggshells

Eggshells contain .050% phosphoric acid, 1% nitrogen, and many other beneficial nutrients that support plant growth. Calcium is also another prominent ingredient in eggshells that promotes plant cell growth. All these aspects make eggshells one of the most natural fertilizers for plants.

How to use eggshells? After crushing them, you need to powder them using an old coffee grinder. This powder should be sprinkled around the soil in the garden.

5. Banana

With high amounts of potassium, bananas encourage plant growth, especially roses. When it comes to planting roses, you must bury a banana in the hole alongside the rose plant. During the growing phase, bananas or banana peels can be buried into the top layer of the soil.

6. Powdered Milk

Powdered milk is a very good natural fertilizer for plants. It is a rich source of calcium. You need to mix the powdered milk with the soil before planting.

7. Cooking Water

Cooking water contains many valuable nutrients. As you boil and cook food items like pasta, eggs, vegetables, and potatoes, these nutrients are released into the water. You can apply the cooking water (after cooling) to the soil to help plants absorb the nutrients.

8. Corn Gluten Meal

Corn gluten is extensively used as an organic preemergent herbicide. It can also be used as a fertilizer. With 10% nitrogen, it promotes plant growth efficiently. After spreading a thin layer of corn gluten meal, you must mix it with the top layer of the soil. The vegetables can be planted inside mixed areas to help them absorb nitrogen.

9. Gelatin

Gelatin is an excellent source of nitrogen. One package of gelatin should be dissolved in one cup of hot water. Then, you have to add three cups of cold water to make a mixture. It can be poured on the soil directly around the plants. This natural fertilizer can be used once a month.

10. Epsom Salt

Epsom salt contains useful plant proteins like magnesium and sulfur. A mixture of one tablespoon Epsom and 1-gallon water can be sprayed directly on the foliage of the plants once every 30 days.

11. Green Tea

Many people use a weak solution of green tea as a natural fertilizer to promote plant growth. It is one of the most common homemade fertilizers available today. A mixture of one teabag and two gallons of water can be used to water plants every 30 days.

12. Fire Pit or Fireplace Ash

If you are on the lookout for one of the easiest DIY fertilizers, look no farther than free pit or fireplace ash. Containing calcium carbonate and potassium, it encourages plant growth. You can sprinkle the ash onto the soil.

Hardwood is the best choice available. Don’t use charcoal or lighter fluid because they cause damage to the plants. Ash is also not a good option while growing acid-loving plants.

13. Matches

Matches are one of the best homemade fertilizers available nowadays. Offering adequate magnesium, they create a good environment for optimal plant growth. The whole match should be placed in the hole along with the plant. Another option available is to soak the matches in water.

14. Hair

You can use hair as a fertilizer. As a nitrogen-rich source, it helps plants grow fast. Hair also repels deer to prevent any damage to your plants. You can go to the nearby salon to collect hair. Apart from human hair, cat hair, horse hair, and dog hair can also be used to make good DIY fertilizers.

15. Horse Feed

Horse feed contains high amounts of molasses. It is well-known that molasses promote plant growth. Horse feed can be sprinkled on top of the soil. Another option available is to dissolve it in water or mix it with another natural fertilizer before applying it as a soil drench.

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