10 Best Fertilizer for Begonias (Reviews & Guide )

If you are looking for a plant with stunning flowers,  spectacular foliage, and beautiful color shades, then Begonias are hard to miss. Begonias come in different leaf shapes, patterns, colors, and sizes that it will take a long time to select than grow.

Begonia just like other flowering plants need care and essential nutrients to thrive. These heavy feeders look beautifully bloomed when fed with the right nutrients. Who has the heart to see these beautiful Begonias dying of hunger? Thanks to science, the nutrients lacked by the soil are provided by fertilizers.

Best Fertilizer for Begonias

To not make you lose nerves amongst endless options, we handpicked some of the best fertilizers for Begonia based on user reviews.

1. Miracle-Gro Shake ‘N Feed All Purpose Plant Food

Miracle-Gro is a household name that is trusted by consumers for helping grow beautiful landscapes. One such miracle worker is Miracle-Gro Shake ‘N Feed All Purpose Plant Food.

Formulated with essential nutrients, the Begonias fed with this All-purpose plant food will appear stronger, nourished, and vibrant. This miracle worker provides optimal nourishment above and below the soil.

With the presence of microbes in the formula, this plant food supports a stronger root system, plant development, and increases water efficiency.

Apply as per the package guide and water regularly. Sprinkle the soil evenly around the tree with the fertilizer and the feeding lasts up to 3 months.


  • Contains natural ingredients 
  • Easy to use 
  • Suitable for in-ground and container plants
  • No unpleasant odor


  • Undefined NPK content

2. Miracle-Gro Water Soluble Bloom Booster Flower Food

Up next is another gem from Miracle-Gro, the Water Soluble Bloom Booster Flower Food. This plant food sets off to work instantly for beautiful blooms.

This Miracle-Gro flower food contains a high content of Phosphorus which gives Begonias vibrant color and high bloom yield. With Begonias so lush in a color that everyone will be green in envy.

With 15-30-15 NPK formulation, this flower food is guaranteed to take care of overall plant health and beautiful blooms.

This flower food works wonders for plants in the ground, pots, window boxes, and other blooming annuals and perennials.

Add the flower food to the watering can (1 tablespoon for every gallon) and mix it well and feed. Feed Begonias every 7 to 14 days during the growing season.


  • Easy to use
  • Prolific blossoms
  • High Phosphorus content


  • Frequent reapplying

3. Miracle-Gro Liquafeed All Purpose Plant Food

Miracle-Gro products have occupied our list of best fertilizers for Begonias owing to their popularity among consumers for effective results.

This plant food stays true to its tagline “Grows plants Twice As Big!” vs. unfed as the feed contains all the essential nutrients to boost growth.

NPK content equals 12-4-8 which delivers ample food for nutrients hungry plants. Nitrogen (N) is considered the “backbone” of plants, Phosphorus (P) works as the bloom booster whereas Potassium (K) supports the overall health.

This plant food helps with the growth and bloom of in-ground and container flowers, vegetables, trees, shrubs, and houseplants.

One bottle covers the area of 400 sq ft, spray at the base of the plant, and needs to be reapplied every 7-14 days.


  • Promotes bloom
  • Affordable
  • Encourages growth
  • Easy application


  • Needs reapplication every 1-2 weeks
  • May kill the plant if not used per instructions

4. Bonide 037321001089 Liquid Plant Food 10-10-10

Bonide has been in business since 1926 providing result-oriented quality lawn and garden care products. Ever since the arrival of this Bonide Liquid Plant Food, it has become popular for its balanced formulation and effective results.

This 10-10-10 fertilizer delivers NPK in a balanced amount, this plant-friendly formulation helps in growing lush and healthier plants. With its balanced composition, it treats deficiencies of essential nutrients as well.

This Liquid plant food is designed for common indoor houseplants, such as orchids, Begonias, succulents, ferns, and poinsettias.

This economical plant food supplies all the essential nutrients in just 7 drops or ⅛ tbsp per quart of water. Dilute it well with water before application.


  • Balanced NPK supply
  • Perfect for all houseplants
  • Good area coverage
  • Economical


  • Difficult to measure

5. EarthPods Premium Bloom Flowering Plant Food

Earthworm Technologies decided to take matters into their own hands as the market was lacking result-oriented lawn stock. This plant food brand has filled up the shelves of many homes with its high-quality garden care.

This flowering plant food is made to fulfill the nutrients requirements of Begonias and other flowers. Loaded with a variety of organic plant nutrients, trace minerals, soil life & humates, this special bloom blaster starts working immediately the moment it sets its feet in.

Place Earthpods into the potting soil mix near the center of the flowering plant, here it releases nutrients slowly in the root zone.

A perfect fit for roses, potted annuals, perennials, flower Bulbs, and hanging baskets. It is usually used as a flower bloom booster for Begonia, Biden, Calibrachoa, Celosia, Coleus, Cleome, Clematis, Cosmos, Daisy, Daffodil, Euphorbia, Fuchsia, Gardenia, Geranium, Impatiens, Iris, Lobelia, Marigold, and Morning Glory, etc.


  • Advanced formulation
  • Suitable for a large variety of plants
  • Grows, multiplies, and blooms
  • Eco-friendly


  • Not defined NPK proportion

6. Burpee Organic Rose and Bloom Granular Plant Food

Begonias are heavy feeders that need a constant supply of nutrients to sustain growth and produce beautiful blooms. The Burpee organic rose and bloom granular plant food ensures that the flowering plant does not run short of nutrients supply.

Contains ample nutrients and beneficial microbes that work wonders in creating beautiful blooms and landscapes. This organic fertilizer does its work without being chaotic for the environment.

Apart from supporting beautiful blooms, advanced composition helps with growth, color, and stronger root development.

Formulated to slow-release nutrients and continue to feed up to 3 months. Ideal for all kinds of roses, flowering plants, potted plants, established beds, and individual bushes.


  • Organic Plant Food
  • OMRI listed for organic use
  • Feeds up to 3 months
  • Slowly releases nutrients


  • Over-priced plant food
  • Lacks NPK

7. Jobe’s Hanging Baskets and Potted Plants Fertilizer Spikes

This Jobe’s organic fertilizer has been Amazon’s Choice for quite some time owing to the innumerable benefits it brings to the table. All of Jobe’s products are trusted worldwide for their quality.

With 8-9-12 NPK formulation, Jobe’s fertilizer spikes contain all the essential nutrients required for the overall health of the plant. Sufficient NPK supply keeps the Begonias well-nourished for a longer period.

With a single application, roots get a constant supply of nutrients for 2 months. Nutrients slowly get released at the root zone causing no mess, hazard, or chemical runoffs.

Recommended plants for these fertilizer spikes are begonias, marigolds, pansies, petunias, geranium, impatiens, vincas, chrysanthemums, and primroses. Ideal for potted plants and hanging baskets.


  • Flowering plants saver
  • Releases nutrients slowly
  • Feeding lasts 2 months
  • Easier to use


  • Low Nitrogen proportion

8. Jobe’s Organics Container & Bedding Plant Fertilizer Spikes

Jobe’s fertilizer spikes are quite famous for working tirelessly towards plant growth and bloom. Many consumers count on these spikes to save their beloved Begonias.

3-5-6 NPK composition along with Jobe’s Biozome not only improves the plant health but also the soil condition. These organic fertilizer spikes contain no synthetic chemicals and are not hazardous to the environment.

What is Jobe’s Biozome? Jobe’s Biozome contains proprietary microorganism Archaea that breaks down nutrients aggressively to make ways for beautiful blooms in a short time. This Biozome composition also aids in the resistance of diseases and insects.

These pre-measured fertilizer spikes are inserted around the plants and deliver nutrients to the roots. Suitable for container and budding plants.


  • Time-release fertilizer
  • OMRI listed for organic use
  • No waste, mess, and runoff
  • No toxic chemicals
  • Safer for kids and pets


  • Low NPK proportion
  • Sticks may grow mold

9. Schultz 1.5# Bloom Plus Water Soluble Plant Food

It is the best Schultz product for the lush growth of flowers. Begonias need soluble plant food for quick growth. This fertilizer has specific action formula, it absorbs through roots and then moves in plant parts.

Schultz made from the concentrated formula with accurate nutrition formula. These nutrients work according to the need of the plant. Fertilizer has a special mechanism, as enriched with every micronutrient which works as a natural nutrient.

Bloom plus formula helps to grow beautiful flowers. It is very easy to use and mixing can be done according to recommendations. The shiny feature of the product is that it quickly works and moves in all plant parts.


  • Very quick in action
  • works in blooming flowers and above parts growth
  • Balanced nutrition formula


  • Bit pricey as compared to other products

10. Espoma RT18 Rose Tone, 18-Pound

Espoma is famous for making natural and organic plant food. This product is enhanced with thousands of microbes which make it perfect in organic gardening. Rose-tone is specially made for flowering plants. It is a long-lasting reservoir of nutrients.

Espoma organic food made in the United States and approved for organic gardening. Begonias need slow-release fertilizer and Espoma comes with a slow-release long-lasting formula. Espoma comes with a blend of essential nutrients.

The proper application provides excellent growth. The shiny feature of this product is that it works in nutrient balance formula. It will fix nutrients deficiency in your plants. More this product enriches your soil with beneficial microbes.


  • Essential for microbes growth
  • Specific in action and approved for organic gardening
  • Cheap in Price


  • Not quick in action but long lasting
 Fertilizer for Begonias

Fertilizing Begonias at different Stages of Growth

Begonias are heavy feeders, they require essential nutrients throughout their life. The soil does not always contain essential nutrients, this shortcoming is then filled by fertilizers. Be it to treat deficiency, maintain growth, or multiply blooms, fertilizers are a one-stop-shop for the plant’s needs.

When Begonias are unfed, they look dull and seem to wilt, this is a clear symptom that the plant needs nutrients or it is because of the abrupt watering schedule.

So, coming back to our main concern which fertilizer to use for begonias and when.

How to fertilizer Begonia

When Begonias are Planted

Begonias are recommended to be fertilized with a balanced NPK fertilizer. Select a balanced fertilizer 10-10-10 or 20-20-20 for Begonia in granular form. Mix it with the soil as per the instructions on the package. Water the soil after application.

When Begonias sprout

When Begonias begin to sprout or reach 3 inches high, take a balanced liquid fertilizer, mix 1 part fertilizer with 3 parts water. Apply the diluted mixture at the base and keep applying every two or three weeks during the growing season.

Fertilizing Begonias in winter

Since Begonias do not grow in winter, it is advisable not to fertilize them in winter. Reduce the fertilizer dosage to one time a month in late autumn. In winter, Begonias do not grow or take up nutrients efficiently below 58 degrees Fahrenheit. Therefore, they must be fertilized in the growing and spring season.

Ideal Fertilizer for Begonias

What to look for when buying fertilizer for Begonias? Begonias need fertilization to grow and bloom. The market is flooded with endless options which makes one confused as to which one is going to work.


An NPK fertilizer is an ideal choice not just for Begonias but for all plants as well. NPK stands for the proportion of Nitrogen, Phosphorus, and Potassium. The NPK percentage is usually given on the label. For instance, a 10-5-8 NPK formulation means that 10% Nitrogen, 5% Phosphorus, and 8% Potassium is present in the mix.

Nitrogen (N) is responsible for the vibrant color and growth, Phosphorus (P) is credited for root growth, flower bloom, and fruit development, Potassium (K) helps with the overall health and wellness of the plants.

For Begonia, a balanced NPK fertilizer does the trick. A balanced NPK fertilizer means that the NPK is in the same proportion. NPK granular fertilizer is used at the time of potting or planting.

Additional Nutrients

If the fertilizer contains three additional nutrients in addition to NPK, it will be a wonder-worker. The three additional nutrients are calcium, Magnesium, and Sulfur.


The addition of micronutrients in the fertilizer works well for plant growth. Micro-nutrients include boron, copper, iron, molybdenum, zinc, chlorine, and manganese. These micronutrients are needed by the plants in tiny amounts.

Frequently Asked Questions

When you should fertilize Begonias?

Begonias should be fertilized in the spring and growing season. It would be useless to fertilize them in winter as they are unable to grow efficiently below 58 Fahrenheit.

Should I feed Begonias?

Yes, They are heavy feeders so for high bloom yield they must be fed every two weeks.

How do you keep Begonias blooming?

For spectacular foliage and blossom, the Begonias must be fed with a balanced NPK fertilizer at planting and later stages of growth.

How often should you fertilize begonias?

Begonias are heavy feeders. They need more amount of fertilizers and other essential supplies. Removing old flowers, pruning, and feeding plants with feed can increase blooming. Begonia plants should feed two times a week.

Is Miracle Grow good for begonias?

Yes, Miracle grow is the best feed for begonias. Miracle grow comes with different food products. Miracle-Gro Shake ‘N Feed All Purpose Plant Food is the best food to provide your flowering plants.

Do begonias like coffee grounds?

Some people love to add coffee grounds as fertilizer to the soil. Keep in mind that the coffee plant does not add Nitrogen quickly to the soil. Coffee ground adds nutrients to your soil. It provides retention and water storage. It helps in root growth and attracts earthworms. Begonias get benefit from acidic soil and adding coffee grounds will help the soil.

Begonias are beautiful flower plants that fill up space with colors and joy. To look their utmost best, they need care and fertilization. Fertilizer must be bought depending on the plant condition or the deficiency it’s going to treat. For Begonia, a balanced NPK fertilizer is suitable for growth and bloom.

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