Top 10 Best Fertilizer for Flowers | 2021 Reviews (Espoma)

Every gardener plant flowers in their yard and there are many reasons why they do it. One is to make their garden more attractive. You’ll also find these handy if you have other plants, such as fruits or vegetables. Regardless of any flower you prefer to plant, you need fertilizers to help you grow it until it blooms beautifully. Fertilizers with the right nutrient contents will help your plant grow healthier despite any condition. You’ll stumble on many options in the market, and if you need to buy the best fertilizer for flowers, you should consider these: 

Top 10 Best Fertilizer for Flowers Reviewed

  1. Jacks Classic No.4 by JR Peters – Best Overall
  2. Flower Fuel by Element Store – Best Value
  3. All Purpose Plant Food by Miracle-Gro – Editor’s Choice
  4. Premium Water Soluble Fertilizer by Proven Winners
  5. Water Soluble Bloom Booster Power Food by Miracle-Gro
  6. 09627 Organic Fertilizer by Jobe's Organics
  7. Bayer Advanced 701110A by BioAdvanced 
  8. FX14049 Liquid Nutrient by Fox Farm
  9. PT18 Plant Tone by Espoma
  10. 707P Organic 8 Bud & Bloom Fertilizer by Dr.Earth

#1. Jacks Classic No.4 by JR Peters – Best Overall

Jacks Classic No.4


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  • Fertilizer Type: Powdered
  • Formulation: 10-30-20
  • Weight: 4 pounds

When it comes to growing flowers, choosing a fertilizer with a high phosphorus content will give you better blooming results, like the Jack Classic No.4 by JR Peters. Aside from phosphorus, it has an excellent blend of nitrogen and potassium to keep you plant at its best condition. 

You don’t have to frequently feed your plant because it’s very effective, yet it doesn’t compromise its health. It also uses safe ingredients to keep your plant from burning. Plus, it enhances roots and stimulates green foliage. 

The best thing about this fertilizer is that it’s hassle-free to apply. All you need is to dissolve it in your watering can with water and pour it into the soil. You don’t have to worry about over-fertilizing because it has a measuring spoon. 

Comes with improved micronutrientsToo potent for other plants
Effective fertilizerNot ideal for roses

#2. Flower Fuel by Element Store – Best Value

Flower Fuel


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  • Fertilizer Type: Powdered
  • Formulation: 1-34-32
  • Weight: 250 grams, 1,000 grams, 5,000 grams, or 20000 grams

Another effective fertilizer for flowers that you should consider is the Flower Fuel by Element Store. It’s available in different sizes, providing options to gardeners as they choose what’s necessary. 

You’ll find it easy to apply because it’s water-soluble, too, like Jacks Classics No.4. It’s one of the reasons why you can consider using it for your hydroponic systems. Aside from that, it’s also ideal for aeroponic and coco system. 

Many gardeners prefer this fertilizer because of its bloom booster-advantage. It comes with ample nutrients and amino acids to fuel your plants, which results in full, colorful blooms. Plus, your flowers will grow more vibrant and bigger, which can make your backyard look more appealing.

Suitable for hydroponic-farmingToo acidic for other plants
AffordableCan burn your plant

#3. All Purpose Plant Food by Miracle-Gro – Editor’s Choice

All Purpose Plant Food


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  • Fertilizer Type: Powdered
  • Formulation: 24-8-16
  • Weight: 1 pound, 5 pounds, 3 pounds, and 5 pounds

The All Purpose Plant Food by Miracle-Gro is also a recommended fertilizer to consider if you’re starting to grow plants. The best thing about this fertilizer is that it’s multipurpose because you can use it on vegetables, trees, and shrubs, aside from flowers. 

In applying this fertilizer, it should be every one to two weeks. It instantly supplies the nutrients that your plant needs after the application, increasing your plant’s probabilities to have bigger blooms. You can use your feeder jar or watering, which are effective ways to apply it. 

Your plant will grow healthier because it comes with high nitrogen content. Also, it’s very safe for your plant because it doesn’t contain harmful ingredients that can damage your plant. 

Uses safe ingredientsCan leave damages on palm trees
VersatileLower phosphorus-content

#4. Premium Water Soluble Fertilizer by Proven Winners

Premium Water Soluble Fertilizer


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  • Fertilizer Type: Powdered
  • Formulation: 24-12-17
  • Weight: 2.5 pounds

Another powdered fertilizer that farmers love using for flowers is the Premium Water Soluble Fertilizer. This fertilizer by Proven Winners comes with an effective blend of nitrogen, potassium, and phosphorus for a healthier soil to grow your plants. 

Many gardeners love it because it can prolong your plant’s life, thanks to its bigger potassium-content. It will keep your plants away from undesirable diseases. 

You can use it in different ways. Regardless if your plants are in containers, hanging baskets, or garden beds, it stays effective, keeping your flowers more vibrant and healthier. 

Since it’s water-soluble, you can mix it with water and apply it to the soil before you begin planting. You can count on it for heavy-flowering as it absorbs nutrients immediately upon application. 

Comes with a measuring scooperNot very effective on perennial flowers
Easy to useNot suitable for vegetable plants

#5. Water Soluble Bloom Booster Power Food by Miracle-Gro

Water Soluble Bloom Booster Power Food


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  • Fertilizer Type: Powdered
  • Formulation: 15-30-15
  • Weight: 1.5 pounds, 4 pounds, 5 pounds, and 10 pounds

Flowers may not be too hassling to grow, yet you need fertilizers to help you produce exceptional blooms. If you can’t find the best fertilizer for your plant, check out what Miracle-Gro has to provide, like the Water Soluble Bloom Booster Power Food. 

Gardeners love using this fertilizer because it guarantees bigger blooms. It comes with the right blend of nitrogen, potassium, and phosphorus to keep your plant’s vibrancy. Plus, it doesn’t come with harmful ingredients, preserving your plant’s health as it continues to produce more flowers. 

Another reason to admire is its effectiveness. Aside from beautiful blooms, it keeps your plant’s root system healthier. All you need to do is to apply this fertilizer every after one to two weeks. Also, you can either use a watering can in applying this fertilizer. 

Stimulates a healthier root systemToo pricey for a small size
Best for marigolds and azaleasUnreadable instructions

#6. 09627 Organic Fertilizer by Jobe's Organics

09627 Organic Fertilizer


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  • Fertilizer Type: Granules
  • Formulation: 3-5-4
  • Weight: 4 pounds

Jobe’s Organics is one of the most respected brands if you need to buy a fertilizer for flowers. You can consider buying the 09627 Organic Fertilizer because it’s suitable for both perennial and annual plants. 

You can count on this fertilizer because it doesn’t use synthetic chemicals. It’s pet-friendly, and it’s also safe for kids. Plus, you can assure zero-damages on your plants, which makes it one of the top picks. 

Another reason why you should consider buying it is because of its packaging. It’s resealable, providing you easy to store it safely after usage. Also, it’s water-proof. 

Uses a water-proof packagingHas an unpleasant odor
Uses natural ingredientsCan grow fungus

#7. Bayer Advanced 701110A by BioAdvanced

Bayer Advanced 701110A


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  • Fertilizer Type: Granules
  • Formulation: 6-9-6
  • Weight: 4 pounds

If you can’t think of an exceptional fertilizer to buy for your flowers, you can never go wrong with the Bayer Advanced 701110A by BioAdvanced. This fertilizer is one of the most recommended granular fertilizers because it’s an insect-killer, too. You can say goodbye from typical pests, like leafhoppers, Japanese beetles, and Aphids. 

Aside from that, it’s also excellent in controlling unwanted diseases like powdery mildew, black spot, and southern blight. 

When it comes to your plant’s growth, its formulation has the best blend of N-P-K to provide the nutrients that your plant needs as it grows further until blooming. Regardless of any flower you plant, you can maximize using this fertilizer because it can treat up to 32 plants. 

Excellent for preventing rustNot ideal for plants in containers
Effective in controlling pestsToo potent for other flowers

#8. FX14049 Liquid Nutrient by Fox Farm

FX14049 Liquid Nutrient


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  • Fertilizer Type: Liquid
  • Formulation: 2-8-4
  • Weight: 32 ounces

The FX14049 Liquid Nutrient by Fox Farm is also worth your money because instead of getting one fertilizer, you get three. 

One fertilizer can guarantee that your plants will grow bigger and healthier. The other one can provide added strength, which is ideal when there’s a sign of flowering. Aside from that, there’s also a fertilizer that can boost your plant to produce bigger blooms. 

You can apply this fertilizer to any plants, and it’s more comfortable than granular-types because you can fertilize as you water your plants. Aside from that, you can also use your sprinklers for application. 

It may not have higher N-P-K contents, unlike other fertilizers, yet it’s enough to let your plants produce beautiful blooms. 

Comes in a package of three fertilizersPackaging quality is weak
Best for matured flowersCan burn your plants

#9. PT18 Plant Tone by Espoma

PT18 Plant Tone


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  • Fertilizer Type: Granules
  • Formulation: 5-3-3
  • Weight: 18 pounds

Another effective fertilizer for flowers that you should give a try is the PT18 Plant Tone by Espoma. Many gardeners recommend this fertilizer because it provides enough nutrients that your plant needs to thrive and produce bigger blooms. 

Another feature of this fertilizer is its slow-release advantage. You don’t have to apply it all the time, yet your plant will continue to grow healthily under any condition. Also, it doesn’t contain harmful chemicals that can cause burns or other damages to your plant.  

When you apply it, you can sprinkle it into your soil. Make sure you mix it properly to guarantee its effectiveness. Plus, it’s versatile because it can work on different plants. 

Comes with a Biotone formulaLow potassium and phosphorus-content
Long-lastingSmelly odor

#10. 707P Organic 8 Bud & Bloom Fertilizer by Dr.Earth

707P Organic 8 Bud & Bloom Fertilizer


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  • Fertilizer Type: Granules
  • Formulation: 3-9-4
  • Weight: 4 pounds

If you’re new to planting flowers in your backyard, the 707P Organic 8 Bud & Bloom Fertilizer by Dr.Earth is one of the best options for beginners. It comes with organic ingredients that will help in your plant’s development and growth. Plus, its formulation comes with the perfect blend of nitrogen, phosphorus, and potassium, making your plant healthier and making bigger blooms. 

Aside from that, it also comes with pro-biotic ingredients that can make your soil healthier. If you’re planting vines, roses, or Bougainvillea, this fertilizer is very effective. Since it’s organic, it comprises fishbone, feather, and alfalfa meals, which are very safe for kids and pets.

You can expect bigger flowers as you apply it into your soil because your plants will absorb the nutrients quickly, which is an added factor of this fertilizer. 

Hold more water than typical soilCan cause molds
Grows three times biggerPricey

Top Pick – Best Fertilizer for Flowers

Even flowers need exceptional fertilizer, and the best one you can buy is the Jack Classic No.4 by JR Peters. It has an impressive formulation, which is responsible for making your plant very healthy with larger blooms. 

Applying this fertilizer is hassle-free because it doesn’t have to be frequent. Your flowers will continue to grow with beautiful blooms because its safe ingredients will improve your plant’s root system.  

Another advantage of this fertilizer is that it comes with a measuring spoon. There are lesser chances of over-fertilizing because you can measure the right amount your plant needs with ease before the application. 

If you want to grow beautiful flowers in your garden, this fertilizer will help you achieve how you want your yard to look.  

Buying the Best Fertilizer for Flowers – Buyers Guide

Gardeners consider planting flowers in their backyard, regardless if it’s a small yard or a big one. It’s not too hassling to grow these, especially when you use the right fertilizer. However, looking for an exceptional one is not easy, especially when there are many options. You should consider this guide before buying one. 


Choosing What Type of Fertilizer to Buy

There are three typical types in the market, such as the following:

Granular Fertilizers

This fertilizer-type is effective if you apply it into the soil or sprinkle it around your plant. Most available fertilizers are in granules, and many gardeners prefer using this type because it can last a month or nine months. These need to break down first before the release of nutrients. Plus, it’s best to apply it before you begin planting. 

There are also high-tech granular fertilizers, and these have the slow-release advantage. Applying is not as frequent as other fertilizers. Also, it doesn’t provide excess nutrients, which can compromise other plants in your area. 

There are also organic granular fertilizers that use blood meal, feather meal, crab meal, cottonseed meal, and manure. You can expect natural minerals from this fertilizer-type. 

Powdered Fertilizers

This type is not very typical, but you can count on its effectiveness. It has the highest concentration, but the best thing about it is that you can control what you apply. The shelf life is long-lasting, which is why it’s also cost-efficient. Gardeners mix it with water in their watering cans during the application, which is not too hassling, unlike granular fertilizers. 

Liquid Fertilizers

This type of fertilizer concentrates that you have to mix with water before the application. Most gardeners use their watering cans or hose-end sprayer to apply it. The downside is that you’ll have to reapply this fertilizer every one to two weeks because of it’s nutrients’ longevity. On the bright side, plants easily absorb this fertilizer-type, which is an excellent boost during your plant’s growing season. 

Contains N-P-K

Considering your fertilizer’s nutrient contents is very significant, especially when you’re growing many colorful flowers. If you are going to buy fertilizers, make sure that it contains nitrogen, phosphorus, and potassium. 

You’ll notice packaging with a series of numbers, like 10-10-4 or 2-3-4. These are formulation, and it depends per brand. If you’re not familiar with it, it’s the amount or percentage of nitrogen, phosphorus, and potassium, respectively. 

  • Nitrogen

This nutrient is responsible for your plant’s growth. It functions as your plant’s backbone, and it’s crucial in the photosynthesis cycle because it can help your plant grow healthier. 

Nitrogen deficiency results in a lessening of chlorophyll content. It can also affect your plant’s fruiting, flowering, along with its protein contents. 

  • Phosphorus

This nutrient is handy during protein synthesis, as the growth of new plant tissues and cell-division. It stimulates the development of your plant’s roots, which deliver the nutrients that your plant needs after applying fertilizers. 

There’s phosphorus deficiency if your plants didn’t grow well, or it took time for these to mature. 

  • Potassium

The last nutrient from the N-P-K is also vital because it promotes the proper functionality of living cells. Plus, it aids starch and protein synthesis in plants. 

A deficiency sign is when leaves are starting to turn yellow, or the margin is falling off. 

  • Other Nutrients

Aside from the N-P-K, there are also other important nutrients that your plant should have. 

  • Magnesium is important because it’s responsible for providing the green coloring of your plant. 
  • Calcium contributes to the development and growth of your plant’s cell walls. This nutrient can make a plant disease-resistant. Plus, it’s essential for metabolism. 
  • Sulfur can also help your plant in resisting damages while contributing to its growth. Also, these are handy in the production of proteins, enzymes, vitamins, and amino acids. 


Complete Fertilizers vs. Organic Fertilizers

Most gardeners are having a hard time choosing whether they need to use complete fertilizers or organic ones. Before, people prefer organic fertilizers because the ingredients are safer. However, gardeners nowadays focus on the nutrient contents, which plants need more. 

Complete fertilizers come with the three significant elements that plants need to flourish. These are nitrogen, phosphorus, and potassium. These are important, especially phosphorus, because this nutrient promotes blooming, which flowers need. In planting flowers, it’s best to get a fertilizer with higher potassium and phosphorus. 

Organic fertilizers compose of fish emulsion, animal manure, leaf molds, which come from living things. Other fertilizers contain greensand or rock phosphate, which come from non-living things. 

The best thing about this kind of fertilizer is that it supplies nutrients too, and it can also enhance your soil. These will not burn your plants, and it stays in your soil for a longer time. Plus, it can strengthen your plant’s immune system. 

Slow-release Fertilizers

You’ll also stumble on fertilizers with slow-release advantages, and it’s ideal if your plant needs infrequent application of fertilizers. These include slow-acting organic fertilizers, like insoluble mineral fertilizers. Most organic fertilizers are slow-release since you need organic matter to decompose soil microorganisms. 

As you search for fertilizers in the market, complete and organic fertilizers are both parts of the recommended list for the best fertilizers for flowers. 


Understanding What Annual and Perennial Flowers Are

Before you choose what fertilizer to buy, you should know what kind of flowers to plant. Here’s a quick overview of what annual and perennial flowers are. 


This type grows and dies in one season, yet some drop seeds tend to grow in the spring. It typically blooms all season and ends in frost, which assures showy blooms and consistent color. Plus, you can plant these any time to refresh your plant beds. 


This type grows for many seasons. The top part of your plant will die in the winter season, yet there will be new growth during spring, as long as it’s the same root system. However, these have less bloom. 

You’d be surprised to know that some annual flowers can be perennials when you’re in a warmer climate. Deciding what to plant also has something to do with your area’s climate. 

Some Tips for Beginners in Planting Flowers

Planting flowers is not very hassling, yet you’ll find these tips helpful if you’re a newbie. 

Prepare your pots or garden beds.

Ensure that you dig out in advance and mix in your fertilizers to enhance your soil’s structure. Pull the weeds out, too, so these will not compete for nutrients and water once you start cultivating your plant. 

Keep your plant size in mind

Check the description or tag to know how wide and tall your plant might grow. Proper spacing is crucial, and you need to put tall flowers at the back, so it doesn’t cover smaller ones. 

Buy healthy plants

If you’re thinking of buying from a nursery, you should look for a plant that appears green and strong. Don’t buy brown, messy, and wilted plants, and if you notice that pots are bone-dry, don’t buy these as well because it’s probable that those are stressed plants. 

Focus on planting times for seedlings

If you’re planting seeds, it’s best to read the package to know how deep you need to plant these. Also, you need to check on your plant’s maturity days. If your plant needs 80 days for maturity, yet it’s the end of June, your plant may grow but not bloom. 

Remember to water your plants

Most plants need moisture weekly to grow, regardless if you’re planting perennial or annual flowers. You can stick your finger in the soil to know if it’s dry. You need to check the ideal way to water your plants because some require deep watering, while some don’t. Plus, you’ll need to water your plants daily during summer to hydrate these. 

Mulching is necessary for new plantings

Mulching is crucial because it can lessen evaporation. It will let you water plants less frequently, saving a lot of effort without compromising your plant’s health. 

Best Flowers to Grow: What Beginners Should Try

If you’re excited to plant flowers in your backyard, here are the best flowers to grow for newbies in gardening. 


This plant is quick-growing, and it’s easy to plant that even kids can do it. You can plant smaller seeds in containers, while bigger seeds can go directly into the soil. It also needs full sun, and it can thrive in well-drained soil. 

Another interesting thing about this plant is that it’s edible. Some add this plant to their salads. 


This plant is one of the most loved flowers. It’s not very difficult to grow, too, as long as you plant it in a sunny area with sheltered soil. These grow taller, where these can even reach up to 14 feet, which is why you need to add support on the stem as it grows. 


Growing this flower is hassle-free to plant, and it grows every year, so you can assure that your backyard will never run out of flowers. You need well-drained soil and a semi-shade moist. Other gardeners use small pots to plant these before transplanting. 


This flower is colorful, which can add appeal to your garden once the blooming starts. You can expect a quick growth, and you’ll find it handy if you’re planting tomatoes because these can repel greenfly and blackfly. It’s best to plant smaller ones on pots or beds, while taller varieties are for borders. 

Sweet Peas

Another flower to add to your list if you’re a newbie is the sweet peas. These have large seeds, but sowing these can be tricky. On the bright side, once these begin growing, you’ll undoubtedly love the fragrance it produces. 

In growing these, you’ll also need a sunny area, and it needs a lot of water. 

Some Reasons Why Planting Flowers Is Worth Your Time

Gardeners plant flowers because these have many advantages. It’s not only for improving your garden’s view but also for other benefits to other plants. Here are some reasons why it’s advantageous. 

Enhanced pollination and harvests

When you have flowers in your yard, these can draw honeybees, along with other pollinators. You can attract wasps, birds, native bees, and butterflies, producing more yield. If your plant is a self-fertile crop, your chances of increasing the yield of other plants surrounding these are high. 

If you’re growing citrus plants, zucchinis, eggplants, or berries, it’s best to plant flowers. Insects will help you with pollination, distributing these to nearby fruit or vegetables. 

If you have deep-throated flowers, these can also work as a reservoir because these can hold dew drops, which pollinators consume for better pollination. 

Helpful in managing weeds

Weeds are also problems that gardeners experience, and thanks to flowers, you can manage these. If you’re planting flowers as a space filler or a ground cover, these can shade your soil until these beat weeds. Some flowers grow quickly, leaving no room for weeds to grow. Some of these include alyssum, native violets, and nasturtiums.

Helpful in disease and pest management

Aside from weeds, you can also count on flowers when it comes to disease and pest management. These keep an exceptional balance, which is significant in the health of vegetables or fruits. 

Flowers can attract predator insects. Instead of compromising your vegetables or fruits, these insects will go to your flowers’ pollen and nectar. There is lesser work for you in controlling these pests because these see your flowers as pollen instead of your crops. 

Flowers can produce chemicals, too, and these can repel undesirable insects from compromising your plant’s roots, leaves, and fruit. You can plant some marigolds or nasturtiums because these flowers can disinfect your soil. Thanks to their strongly aromatic flowers, these can repel pests above your soil. 

Aside from that, flowers can serve as a trap to bait pests. It’s an easy way for you to remove these, making it an effective way to protect your plants. 

Flowers are edible and nutritious too

Flowers are not only for garnishing. There are edible flowers that you can plant, and you can include these in your diet. These are very nutritious, and some gardeners eat blue borage, violas, cheerful calendula, nasturtiums, and pretty pansies. The petals of these flowers will give you added nutrients as you include these in your meals. 

Aside from that, seeds from flowers are also edible. Chia flowers, coriander, and sunflowers have protein-rich seeds. The best thing about these is that they are easy to grow. 

You can also make herb teas from flowers. Some of the flowers that you can plant are lemon balm, borage, bergamot, and chamomile. If you have a big yard, you can start your small tea business in your neighborhood. 

Provide medicinal benefits

Numerous edible herbs can also provide health benefits. Thanks to the nutrient compounds these edible herbs have, you can use these as antibiotics. Plus, these can also boost the immune system of your body.  

You can use flowers as ingredients

Flowers are handy if you’re making cosmetic products. Petals from the Calendula-plant are useful in making lip balms and salves. 

Provide natural and pleasant aroma

You’ll save a lot of money in growing flowers because these can provide pleasant fragrant blooms in your home. Your garden will look not only very attractive but also stress-relieving.


Flowers are always part of the plants you’ll see in every gardener’s yard. If you’re thinking of planting some, yet you’re a beginner, you don’t have to worry because it’s not that complicated at all. You can try many flowers, but you need a hand from fertilizers if you want these to bloom beautifully. 

As you look for an effective fertilizer for your plant, nutrient contents are very significant. Regardless if you’re using a liquid, granular, or powdered, your fertilizer should have an exceptional blend of these, and the Jacks Classic No.4 by JR Peters is the best fertilizer you should consider. From formulation to ingredients, it’s very reliable. Also, it’s not too hassling to apply. 

FAQs (Frequently Asked Questions)

When should I start fertilizing flowers?

The best time to fertilize your plant is at the beginning of its growing cycle. Don’t wait for the flowers to bloom because applying fertilizers in early spring is suitable for flowers. Also, you need to fertilize early morning or late-night. 

Do perennials die during winter?

Yes, perennials die when it’s winter, no matter how long your plant lived. If you’re thinking of plopping your plant to save it, it’s not an assured way to save it. 

Are they ways to protect plants during winter?

You can try protecting your plants through wood-mulching. You can spread a 2-4-inc blanket of mulch, and you should prevent watering it excessively. Another alternative way is to go greenhouse.

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