9 Best Fertilizers For Geranium [Gardening Advice & Suggestions]

9 Best Fertilizers for Geranium [Gardening Advice & Suggestions]Want to help your geraniums with a boost of nutrients? Fertilizing may do the trick!

Every gardener knows that fertilizer is key to having a healthy garden. You probably also know that there is a large variety of different types of fertilizers to choose from. However, different plants have different needs, so you need to find the right fertilizer for yours.

We've done the research to help you find the best fertilizer for your geraniums.

1. Miracle-Gro Shake 'N Feed - Rose & Bloom

This plant food will boost the strength and vigor of your geraniums and will help promote more bloom growth so you can enjoy their beautiful colors longer.

This food nourishes topsoil and the deeper soil where the roots reach with its ingredients of kelp, earthworm castings (a nutrient-rich mixture of enzymes, bacteria, and plant and animal manure remnants), feather meal, and bone meal.

Shake an even amount around your plants then add water. Because of this fertilizer's continuous-release, one spreading of this will last up to 3 months.

The analysis of this fertilizer is 10-18-9. These 3 numbers refer to the amount of Nitrogen, Phosphorus, and Potassium, respectively.

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2. ALGOplus Geranium and Patio Plants Liquid Fertilizer

World record-breaking geraniums have been grown with the help of this liquid fertilizer. While many fertilizers have macronutrients, this one used micronutrients to help promote growth. The 1-liter bottle can be used up to a few years since you dilute it with water; just this 1-liter bottle can be used for up to 118 feedings.

The analysis of this plant fertilizer is 4-6-8. If the plant is well nourished, it can better withstand diseases and pests. On top of being an exceptional fertilizer for your geraniums, it's also odorless, colorless, and safe for the environment.

Reviewers of this product have shared that their geranium plants weren't producing many, if any, blooms until they used this product. Year after year, this fertilizer has delivered great results for its customers.

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3. Southern Ag PowerPak 20-20-20 Water Soluble Fertilizer

The analysis of 20-20-20 works great for established geraniums. It will help promote the growth of bigger blooms and provide the plant with the necessary micronutrients to keep it healthy. The micronutrients found in this package provide geraniums with the appropriate nutrients.

Dilute this fertilizer by adding 2 tablespoons of it to 1 gallon of water. This combination provides all the necessary nutrients.

Reviewers of the PowerPak have said that it has worked wonders on their garden, helping to create more lively, healthy plants with bigger blooms. It's a very cost-effective choice because of its price point and 1 pound contents.

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4. Fertilome Water Soluble Plant Food

If your geraniums aren't performing how you wish they would, Fertilome's fertilizer will help give your geraniums the boost they need. The 20-20-20 analysis provides an even amount of Nitrogen, Phosphorus, and Potassium.

Reviewers love that this product lasts a long time and delivers on its promise of promoting large blooms and deep green, healthy foliage. It works best if the soil is completely soaked.

This is highly concentrated plant food, so it only takes 1-2 tablespoons per gallon of water to feed your plants in the outdoor garden. If your geraniums are in a hanging basket or container, only use 1 teaspoon per gallon of water.

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5. Jack's Classic Blossom Booster for Flowering Plants

This 10-30-20 micronutrient-rich fertilizer will help your geraniums to produce larger, long-lasting blooms. It will also create more vibrant colors on each bloom. The plant feeds through both its leaves and roots.

It's best to use it every 1 to 2 weeks. For outdoor garden plants, dilute 1 tablespoon into 1 gallon of water and for indoor plants, dilute 1/2 teaspoon into 1 gallon of water every other week. Each bucket of fertilizer comes with an instruction pamphlet and a measuring scoop.

Many reviewers comment that this product helps any plant it touches and has created the biggest blooms than any other fertilizer. Some people have even noticed that it has immensely helped their plants when in the middle of heat waves in their growing region.

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6. Jobe's Organics Plant Fertilizer Spikes

These plant fertilizer spikes are perfect for placing in containers and garden beds. The spikes reach down to the roots, where the plant needs its nutrients the most. It is a slow-release fertilizer, meaning that nothing will go to waste and that the plant slowly takes the nutrients as it needs them.

When using these spikes for a flower bed, space them out evenly so that there are 8 spikes per square foot of garden bed. If used in a container, you'll evenly plant the spikes according to the diameter of the container.

The analysis of the fertilizer spikes is 3-5-6 and is derived from bone meal, feather meal, and potassium sulfate. Using this will help to fight pests and disease as well as increase the health of the soil. Each packet comes with 50 spikes.

It's most beneficial to use these spikes at either the time of planting or early in the growing season.

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7. Miracle-Gro All Purpose Plant Food 

Miracle-Gro All-Purpose plant food is full of all the essential nutrients that plants need to survive and thrive. Feed the geraniums once every 1 to 2 weeks. This water-soluble mix is instant release so the plant receives the nutrients immediately.

The best combination for geraniums to thrive is water, sunlight, and proper nutrition. For geraniums in the garden, mix 1 tablespoon of the fertilizer with 1 gallon of water. If your geraniums are in a container or inside, mix 1/2 teaspoon with 1 gallon of water.

This plant food comes in sizes of 5 pounds, 6.25 pounds, and even 24 single packets. The analysis of this fertilizer is 24-8-16.

Reviewers noted that this all-purpose plant food drastically helped their plants and made them perkier and full of more color. One reviewer even mentioned that her plants now look so great that people will stop to take pictures of the blooms.

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8. Joyful Dirt Concentrated All-Purpose Organic Fertilizer and Plant Food

Joyful Dirt has created a plant fertilizer that will help you grow your geraniums larger and healthier. The fertilizer works quickly to reach the roots of the plant in order to provide the most benefit. The bottle is 2 ounces.

It is an all-natural, organic fertilizer that's pet-safe and helps prevent disease and pests. To use, sprinkle the fertilizer around the base of your plant, then water it, or mix 2 tablespoons into 1 gallon of water. Use it once a month to enjoy the benefits.

Its analysis is 8-1-5. The contents also have mycorrhizae, which allows the geranium to absorb more nutrients and water into itself.

Reviewers of this product have commented that this product has helped completely revive their nearly dead or drooping plants and gave them new life and vibrancy.

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9. Jack's Professional Geranium Fertilizer

This water-soluble fertilizer is perfect for promoting the health and growth of your geraniums. The fertilizer analysis is 15-15-15, an even mixture of Nitrogen, Phosphorus, and Potassium. It's a perfect blend for neutral pH loving plants like geraniums.

The micronutrients in this fertilizer help minimize toxic elements that can affect geraniums. It will help to create strong root systems and increased health of the buds. This fertilizer has a continuous liquid feed to the plants.

Reviewers have said that their geraniums have never looked better after using this fertilizer and that they are entirely happy with the way it has helped their plants.

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Help your geraniums grow and flourish

For more tips and tricks on caring for these gorgeous plants, you may want to check out these posts too -

How to Grow Geraniums - The complete guide

Geranium Hanging Baskets (Care Guide, PICTURES and more)

Creeping Geranium Plant Guide

15 Pink Geranium Varieties For Your Garden

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