Best Homemade Fertilizer for Hibiscus – Organic, Liquid & Compost

Hibiscus plants are known for their vibrant and captivating flowers, but achieving those stunning blooms requires proper care and nutrition. Homemade fertilizers are effective and budget-friendly solutions, allowing you to provide your hibiscus plants with the essential nutrients they need for healthy growth and abundant flowering.

While store-bought fertilizers offer convenience, there’s a certain satisfaction and eco-friendliness in harnessing the potential of homemade fertilizers. 

But, what is the best homemade fertilizer for hibiscus plants?

The best homemade fertilizers for hibiscus plants include vinegar, coffee grounds, banana peels, wood ash, and blackstrap molasses. These natural ingredients provide essential nutrients and promote healthy growth and vibrant blooms in hibiscus plants.

Importance of Fertilizing Hibiscus Plant

Fertilizing the hibiscus plant provides the necessary ingredients it needs to grow strong and vibrant. Fertilizers contain necessary nutrients like nitrogen, phosphorus, and potassium, which are needed for your plant. These nutrients help stimulate root development, promote healthy foliage, and encourage the production of vibrant and long-lasting flowers.

Proper fertilization also enhances the plant’s resistance to diseases and pests. Also, fertilizer strengthens the plant’s immune system, making it more strong and overall healthy.

You can make your hibiscus more thriving by fertilizing it at the right time and with proper care. Regular fertilization throughout the growing season ensures a continuous supply of nutrients, giving your hibiscus the best chance to flourish and delight you with its captivating blooms.

Nutrient Requirements of Hibiscus Plant

do hibiscus need full sunlight

Hibiscus plants need three key nutrients that are nitrogen, phosphorus, and potassium. Nitrogen helps with leaf and stem development, giving your hibiscus that lush and full appearance. 

Phosphorus is essential for strong root growth, ensuring your plant stays firmly grounded and absorbs water and nutrients efficiently. Potassium promotes overall plant health, helping it fight off diseases, withstand harsh weather conditions, and produce beautiful, long-lasting flowers.

Also, hibiscus plants benefit from secondary nutrients like calcium, magnesium, and sulfur. These nutrients play supporting roles in the plant’s overall health and development.

To ensure your hibiscus receives the necessary nutrients, consider using a balanced fertilizer specifically formulated for flowering plants. This type of fertilizer will have a ratio of nutrients that helps in the specific needs of hibiscus plants, promoting healthy growth and abundant blooms.

Follow the recommended dosage instructions when applying fertilizer. Too much fertilizer can actually harm your hibiscus plant, so it’s best to be cautious and apply a little less rather than overdo it.

Regular fertilization throughout the growing season is crucial for meeting your hibiscus plant’s nutrient requirements.

What is the Best Fertilizer for Hibiscus?

The best fertilizers for hibiscus trees can be either slow-release or water-soluble. Choosing the right balanced fertilizer is essential, which means the three numbers on the fertilizer label should be the same, such as 20-20-20 or 10-10-10.

If you’re using a water-soluble fertilizer, dilute it to half-strength. This helps prevent over-fertilization, which can harm the hibiscus tree’s roots as well as yellowing and drooping leaves. By using the fertilizer at a lower concentration, you can help your hibiscus tree receives the necessary nutrients without causing any harm.

Proper fertilization, whether with slow-release or water-soluble options, in the right proportions, will help your hibiscus tree thrive and give you abundant, healthy blooms.

Best Homemade Fertilizer for Hibiscus

When it comes to the best homemade fertilizers for hibiscus plants, there are several options you can easily make at home. Here are some best homemade fertilizers – 

1. Vinegar

Vinegar is a versatile ingredient that can serve as a natural fertilizer for hibiscus. Dilute a cup of vinegar in a gallon of water and use it to water your plants occasionally. The acidity in vinegar helps provide essential nutrients to the soil, supporting healthy growth and vibrant blooms.

2. Coffee grounds

Coffee grounds, another household item, can be a valuable fertilizer for hibiscus plants. Sprinkle used coffee grounds around the base of your plants, allowing them to decompose and release nitrogen, phosphorus, and potassium. This organic boost contributes to overall plant health and stimulates flower production.

3. Banana peels

Banana peels, often discarded as waste, can be transformed into a nutrient-rich fertilizer for your hibiscus.

Once fully composted, these ingredients can be incorporated into compost bins or piles. The resulting compost can then be utilized as a beneficial mulch or soil amendment, providing nourishment to your hibiscus plants.

Chop up the peels and bury them in the soil near the plant’s roots. As they decompose, banana peels provide potassium, phosphorus, and other minerals, nourishing your hibiscus and encouraging vigorous growth and abundant blooms.

4. Wood ash

Wood ash from your fireplace or fire pit can also be repurposed as a natural hibiscus fertilizer.

Sprinkle a small amount of wood ash around the base of your plant, but don’t overdo it. Wood ash contains potassium, which aids in flower formation and enhances the plant’s overall strength and vitality.

Read this: Is Bone Meal Good for Hibiscus Plants?

5. Blackstrap molasses

Blackstrap molasses, a byproduct of sugar production, can work wonders as a homemade fertilizer. You can mix a tablespoon of blackstrap molasses with a gallon of water and use it to water your hibiscus plants once a month. The molasses provides trace minerals and carbohydrates that promote healthy growth and help plants withstand stress.

These homemade fertilizers, including vinegar, coffee grounds, banana peels, wood ash, and blackstrap molasses, offer natural and cost-effective ways to nourish your hibiscus plants. 

How to Apply Homemade Fertilizer for Hibiscus Plants?

Here’s how you can apply homemade fertilizer in a way that’s easy to understand –

Whether you’re using vinegar, coffee grounds, banana peels, wood ash, or blackstrap molasses, make sure you have your homemade fertilizer ready. Follow the specific instructions for each type to ensure the right dilution or application method.

Before applying the fertilizer, water your hibiscus plants thoroughly. This helps prepare the soil and ensures better absorption of the nutrients from the fertilizer.

Start by applying the homemade fertilizer around the base of the hibiscus plant, being careful not to directly pour it onto the foliage.

Spread the fertilizer evenly around the base of the plant, extending it slightly beyond the drip line. This helps distribute the nutrients evenly to the plant’s root zone.

While homemade fertilizers are generally safe, it’s important not to overdo it. Over-fertilizing can lead to nutrient imbalances or even harm the plant.

After applying the fertilizer, give your hibiscus plants a gentle watering to ensure the nutrients seep into the soil and reach the roots. This will help kickstart the absorption process.

Keep an eye on your hibiscus plants for any signs of nutrient deficiency or excess of it. Adjust the fertilization routine as needed.

Also Read: How Much Sunlight Does Hibiscus Need?

When to Fertilize Hibiscus Plant?

Active growing season – The best time to fertilize your hibiscus is during its active growing season. Typically, this occurs in spring and summer when the plant is actively producing new leaves and flowers.

Check this: How Long Does Hibiscus Flower Last?

Wait for warmer weather – Before starting your fertilization routine, make sure the weather has warmed up consistently. Hibiscus plants prefer temperatures above 60°F to absorb nutrients effectively.

Begin in spring – As the winter comes and the weather becomes milder, it’s a good time to fertilize in early spring. This helps provide the necessary nutrients to support new growth and prepare the plant for blooming later in the season.

As the cooler temperatures set in and your hibiscus plant enters its dormant phase, it’s time to give it a break from fertilization. During late fall and winter, hibiscus plants naturally slow down their growth, and fertilizing during this time may not be as effective.

Organic Vs Compost which is Best Fertilizer for Hibiscus

When it comes to choosing the best fertilizer for your hibiscus plants, you may want to know which one is better. Compost includes – food waste, and worm castings whereas organic include – Bone meal, and blood meal.

Organic Fertilizers

  • Derived from natural sources like plant matter, animal byproducts, or minerals.
  • Provide nutrients to hibiscus plants in a slow and steady manner and in a natural way.
  • Contains a balanced blend of essential nutrients, including nitrogen, phosphorus, and potassium, along with trace elements.
  • Improves overall soil health and encourages beneficial microbial activity.
  • Enhances nutrient absorption by plants and promotes healthy growth and blooming.
  • Commercially available organic fertilizers offer convenience and ease of use.


  • Created at home by decomposing organic materials like food scraps, leaves, and grass clippings.
  • Enriches the soil with organic matter, improving its structure and fertility.
  • Releases nutrients gradually, providing a steady supply of nourishment to hibiscus plants.
  • Improves water retention and promotes a thriving ecosystem of beneficial microorganisms in the soil.
  • Acts as a long-term investment in soil health, creating a sustainable environment for hibiscus growth.
  • It can provide your hibiscus plants additional advantages, including enhanced soil structure and increased moisture retention.

However, the choice between organic fertilizers and compost depends on personal preferences and gardening practices. Both options offer advantages in terms of nutrient supply, soil health, and plant growth. Whether using commercially available organic fertilizers or creating compost at home, the key is to provide a balanced and nutrient-rich environment for your hibiscus plants to thrive.

Liquid fertilizer for Hibiscus Plant

Here are some liquid fertilizers you can easily make by yourself – 

Organic Foliar Spray – Hibiscus plants require ample micronutrients for optimal growth. Applying organic foliar spray helps address any deficiencies. You can use water-soluble organic fertilizers like powdered capsules or fish emulsions. Prepare a solution according to the instructions provided and spray it directly on the foliage of your hibiscus plants.

Fish Tank Water – If you have a fish tank, the water used for your fish can serve as a fertilizer for your plants. Simply use the dirty fish water to water your hibiscus and other household plants. The fish waste in the water provides nutrients that benefit plant growth. Use this water every other week for the best results.

Banana Peel and Eggshell Mixture – Dry four banana peels and three eggshells, then grind them into a powder. Add four tablespoons of Epsom salt and blend thoroughly. Mix 75 ml of water with the powder and shake well. Use this liquid to water your hibiscus plants.

Compost Tea – Create compost tea by filling a large bucket with organic compost or manure, adding water, and covering it with a lid. Allow the mixture to sit for at least a week in a cool, dry place. Dilute the composted tea by mixing one part of the tea with five to ten parts of water. Use this diluted mixture to water your hibiscus plants.

Fertilizing Tips for Hibiscus plant

Keep your hibiscus plant healthy and thriving, here are some tips for fertilizing –

  • Choose a balanced fertilizer specifically made for hibiscus plants, with equal amounts of nitrogen, phosphorus, and potassium.
  • Follow the instructions provided with the fertilizer, correct dosage and frequency of application.
  • Fertilize during the active growing season in spring and summer.
  • Start with a smaller amount of fertilizer and gradually increase if needed.
  • Water your hibiscus plant before applying fertilizer to prevent root burn and ensure even distribution.
  • Avoid over-fertilizing, as it can harm the plant. 
  • Consider using slow-release fertilizers for a more convenient and consistent nutrient supply.
  • During autumn and winter, reduce the frequency of fertilizer application to once every four weeks.
  • Observe your hibiscus plant’s response to the fertilizer and make necessary adjustments accordingly.


Properly fertilizing your hibiscus plants is essential for their health, growth, and vibrant blooms. By understanding the nutrient requirements and using the right fertilizers, such as balanced organic options or homemade fertilizer, you can provide the necessary nutrients your plant need. 

Moreover, paying attention to the timing of fertilization and avoiding over-fertilization can further enhance the plant. With a consistent and well-balanced fertilizing routine, you can enjoy the beauty and splendour of your hibiscus plants.