15 Best All-Purpose Plant Fertilizers [Liquid, Powder and Granular]

When it comes to gardening, few things are as important as fertilizer. Fertilizer is an integral part of creating a successful and thriving garden. But choosing the best fertilizer can be difficult. There are lots of varieties and options on the market.

What makes a fertilizer good depends on the plant variety and the nutrients that it needs. The goal of the fertilizer is to provide the plant with nutrients that may be lacking in the soil. The perfect blend of macro- and micronutrients supplies the plants with all it could need for successful growth.

Collage of plant fertilizers with a farmer giving granulated fertilizer to young tomato plants on the background, 15 Best All-Purpose Plant Fertilizers [Liquid, Powder and Granular]

In gardening, you can’t go wrong with using an all-purpose fertilizer. This type of fertilizer contains sufficient parts of the three primary nutrients needed by plants: nitrogen, phosphorous, and potassium. The combination of these three nutrients in a fertilizer encourages the optimal healthy growth of your plants.

There are many forms of fertilizers, the most popular being liquid, powder, and granular. Each one has different qualities that make them suitable for your garden and gardening style. Liquid fertilizers are combined with water to form a solution. Powder fertilizers are spread by hand then watered to activate them. Granular fertilizers can be spread by hand, then soaked into the garden over time as you water it.

If you feel overwhelmed with the sheer variety of fertilizers, just remember that all-purpose fertilizer is a wonderful viable option for promoting plant health. To help you out, we created a list of 15 of the best all-purpose plant fertilizers. Let’s get to it!

Liquid Fertilizers

1. Triple 10 Liquid Fertilizer

Triple 10 liquid fertilizer is designed to supply nutrients to the plant during all phases of growth. It has a 10-10-10 composition (Nitrogen-Phosphorous-Potassium) with added amino acids and seaweed extract. 

Combine 1 to 2 ounces of the liquid fertilizer into one gallon of water and use every week to every other week. The fertilizer comes in an easy-pour container that allows for specific measurements. 

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2. Miracle-Gro Liquid Plant Food

Miracle-Gro Liquafeed all-purpose plant food has a perfect blend of all the nutrients your plants need to be healthy. This starter kit allows you to apply the liquid fertilizer through a special nozzle attachment for your hose or with a watering can. Apply every to every other week.

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3. Liquid Love All Purpose Plant Food

Liquid Love all-purpose plant food is 100% natural and organic. Its formula is designed to be a one-stop source to meet all your plant’s growing needs. Shake well then add 2 ounces of the concentrate to one gallon of water. Use it at least once a month. 

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4. Schultz Liquid Plant Food

Schultz liquid plant food includes the three primary nutrients as well as micronutrients for added benefits. Drip 7 drops of concentrate per quart of water. The dropper makes measurements easy and precise. Its fast release formula gets nutrients as quickly as possible to your plants. 

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5. Neptune’s Harvest Organic Liquid Fertilizer

Neptune’s Harvest organic fertilizer contains a variety of fresh fish caught in the North Atlantic. This particular blend includes fish and seaweed. Shake well then apply one ounce of the liquid per gallon of water. Feed your plants with this fertilizer every or every other week for the best results. Do so either early or late in the day.

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Powder Fertilizers

6. Organic Plant Magic Powder Fertilizer

Organic Plant Magic is an all-purpose plant food that includes a rich blend of alive, beneficial microorganisms. It even includes 55 trace minerals in the blend. The powder fertilizer instantly dissolves in water. It works during all stages of plant growth, so use it all season long. 

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7. Water Soluble All Purpose Plant Food

Miracle-Gro all-purpose plant food is full of all the essential nutrients for plant health. Upon application, it feeds your plants instantly. Mix one tablespoon per every gallon of water. Feed your plants with this formula every to every other week for the best results. Soak the base of the plants when you use this formula. 

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8. Jack’s Classic Water Soluble All Purpose Plant Food

Jack’s Classic all-purpose, water soluble plant food feeds your plants through both the leaves and the roots. Combine one tablespoon of the food per gallon of water and apply the solution to your plants every week to every other week. Enjoy greener leaves, brighter colors, and a higher volume of blooms.

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9. Grow More All Purpose Fertilizer 

Grow More all-purpose, water soluble fertilizer concentrate dissolves in cold water. It has a high analysis formula that’s fit for growing all kinds of plants. Combine one tablespoon of fertilizer per gallon of water. The 25-pound bag will last for a very long time. 

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10. Southern Ag All Purpose Fertilizer

This one-pound bag of Southern Ag all-purpose fertilizer is full of micronutrients that help produce healthy, vigorous plants. A one-pound bag covers 1,000 square feet of area. Mix two teaspoons per gallon of water and apply every 7 to 10 days.

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Granular Fertilizers

11. Burpee All Purpose Granular Plant Food

Burpee Organic And Natural app purpose granular plant food includes the three major nutrients as well as calcium, minor nutrients, and some microbes. One application can feed your plants for up to three months after application. It promotes plant growth and more blooms. 

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12. Down To Earth All Purpose Fertilizer 

Down To Earth all-purpose fertilizer is an all natural, organic fertilizer that won’t burn your plants. It delivers a steady supply of rich nutrients while also enhancing the fertility of the soil and the natural microbial activity. There are specific application directions according to the type of plants you’re planting, so read the box closely. 

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13. Jobe’s Organics All Purpose Granular Fertilizer

Jobe’s Organics all-purpose granular plant food is a fast-acting fertilizer. There are absolutely no synthetic materials in the blend and it’s certified organic. The formula is a special blend targeted to increase plants’ root masses, bear more fruit, and promote healthy foliage growth.

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14. Southern Ag All Purpose Granular Fertilizer

Southern Ag’s all-purpose granular fertilizer contains a balanced level of plant nutrients. Shake the granules evenly over the area, then water it in order to activate the fertilizer. In the garden beds, apply about 1 cup of fertilizer per 25 square feet.

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15. Martha Stewart All Purpose Plant Food

Martha Stewart’s all-purpose plant food contains organic ingredients. Turn the granules into the first few inches of soil, then water the area. Four pounds of mixture cover 100 square feet. Your plants will enjoy long-lasting nutrients from this fertilizer. 

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Let us know in the comment section below which all-purpose plant fertilizer you use and how it benefits your plants! Before you go, be sure to check out these other plant guides:

Compost vs. Fertilizer – What’s The Difference?

11 Best Fertilizers For Pine Trees

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