Best Fertilizers For Knockout Roses

Best Fertilizers For Knockout Roses 2020: Reviews & Buyer’s Guide

Who doesn’t want a garden full of roses? If you are thinking about planting roses that look beautiful and healthy, it is important to use a good quality fertilizer that can give them the much-needed nutrition.

However, finding the best fertilizer for knockout roses can be a challenging task. There are so many fertilizers out there, but not all of them are suitable for all.

Thus, we have come up with a list of top 10 fertilizers specially meant for knockout roses, along with their pros and cons, and a few FAQs.

Top 10 Best Fertilizers For Knockout Roses 2020

1. Miracle-Gro Shake N Feed

This is one of the best fertilizers for roses. It contains natural ingredients to feed the soil microbes.

The fertilizer helps in improving the root strength and development that leads to better water efficiency for plant growth.

The fertilizer contains micronutrients that can help the rose plants to grow stronger and much more vibrant.

The fertilizer is formed with kelp, earthworm casting, and feather meal to feed the microbes in the soil.

The best part about the Miracle Gro Shake n Feed is that it can be used anywhere conveniently. Thus, it can be used on the ground as well as in the container.


  • Easy to apply
  • Contains micronutrients
  • Made up of natural ingredients


  • As per a few customer reviews, the packaging of fertilizer is not up to the mark

2. Jobe’s Organics Granular Fertilizer

This is one of the fastest-acting fertilizers meant for knockout roses. Regular use of this fertilizer will provide you with lots of beautiful bunches of roses. The fertilizer is OMRI listed for organic farming.

The best part about Jobe’s Organic fertilizer is that it does not contain any added chemicals.

The product contains Jobe’sBiozome, which is a proprietary microorganism that breaks down the material to provide you with faster and effective results.

Use of this fertilizer will help you in improving the soil condition, and resisting plant diseases, insects, and drought. The easy pour bag will help in the easy application of fertilizer in the plant.


  • Fast-acting fertilizer
  • OMRI listed fertilizer
  • Contains Jobe’sBiozome
  • Comes with an easy to pour bag


  • Few customers complained about the growth of fungus after use of this fertilizer

3. Jobe’s Rose Fertilizer

The Jobe’s Rose Fertilizer is specially designed to be used for faster and effective growth of rose plants.

The fertilizer is convenient and easy to use, and it provides nutrition underground at the roots. The spikes in the fertilizer ensure that the nutrients are not washed away.

Application of the fertilizer helps in the improvement of growth and height of the rose plant.

Your rose plant will bloom better after the application of this fertilizer. For an easy and mess-free fertilizing option, this is the best fertilizer for knockout roses.

The spikes are available in waterproof and resealable pouches for better use. The best part about the fertilizer is that it doesn’t come with any kind of hazards or smell.


  • Easy to use
  • Non-smelling product
  • Available in a waterproof pouch
  • Nutrition at underground roots


  • As per a few customer reviews, the fertilizer may be too strong for little plants

4. Tea Drops Rose Fertilizer

The Tea Drops rose fertilizer is the best one not only for knockout roses, but for all other varieties of roses.

The fertilizer can be easily applied, and you don’t have to face any hassle or hazard during fertilizer application.

The fertilizer is filled with the benefits of micronutrients as well as macronutrients. The best thing is that it is composed of only natural ingredients.

Thus, you don’t have to worry about any harm done to the environment because of the use of the fertilizer.

With regular use of this fertilizer, you will experience exceptional natural growth of beautiful roses in your garden.

The fertilizer can be easily applied on any surface. Thus, you can use it on the ground as well as in pots or containers.


  • Excellent natural growth
  • Easy to use
  • Includes micronutrients as well as macronutrients
  • Works for all varieties of roses


  • The cost is a bit expensive

5. Burpee Organic Rose Fertilizer

This is a granular plant food that will help your plant to get the best nutrients, so that it can bloom quickly and effectively.

The use of the fertilizer will provide a flush of nutrients, and you can see the results immediately.

The fertilizer contains beneficial microbes that provide spectacular bloom. The use of the fertilizer will also help you in getting the best root development. The fertilizer is OMRI listed for organic use.

This granular plant food by Burpee is known as the best fertilizer for knockout roses.

It can be conveniently used in container gardens, established beds, and individual bushes.


  • Contains beneficial microbes
  • Can be used in all types of surfaces
  • OMRI listed
  • Provides nutrients


  • As per a few customer reviews, plants wilted after use

6. Scott’s Continuous Release Plant Food

The easy to use formula of this fertilizer provides the best nourishment to your rose plants.

The use of this fertilizer helps in vigorous root growth and also provides lush foliage.

The formula is pretty safe to use. Thus, you won’t face any type of allergy or issues after the use of this fertilizer. The formula can be applied directly from the bag into the plant.

No matter what type of garden you have, the use of Scott’s continuous release plant food will provide you with blooming roses.


  • Easy to use
  • Safe to use
  • Provides vigorous root growth
  • Provides lush foliage


  • Some customers found the product to be a bit expensive]

7. EarthPods Premium Blooming Plant Food

This premium plant food is perfect for indoor as well as outdoor rose plants. The product offers multiple benefits like better flower production, faster root growth, and better nutritional benefits.

You don’t need any measuring tool or container to use the fertilizer into the plant.

The fertilizer can be easily applied out of the bag into the plant. The best part about this plant food is that it does not produce any type of weird smell.

The product is available with organic nutrients, trace minerals, and soil humates for best quality plant and flower growth. Thus, to get blooming roses, this is the best fertilizer for knockout roses.


  • Eco-friendly product
  • Easy to use
  • No mess
  • No smell


  • The product is a bit pricey

8. Dr Earth Natural And Organic Fertilizer

This is one of the best organic fertilizers that can be beneficial to be used in raised beds.

The natural and organic fertilizer can be used for summer as well as winter roses. The organic fertilizer can be used in containers as well as in bed lands.

The regular use of the fertilizer provides continuous sources of nutrition to the plants.

You can witness better bloom and growth in rose plants after the use of this fertilizer.

This is an OMRI listed fertilizer that can be used safely to get best quality roses.

The product is made after using research provided by the best environmentalists in the US.


  • Provides nutritional boost
  • Sustainably made in the US
  • Can be applied in any season


  • The product seems a bit overpriced as compared to the value it offers

9. Miracle-Gro Rose Plant Food

The use of this Miracle-Gro rose plant food will help your plant in getting best bloom and lush foliage.

The best part about the Miracle-Gro plant food is that it works instantly and gets the best result.

This plant food is easy to use, and it also comes with a feeder can that helps in easy application of the plant food.

The Miracle-Gro Rose plant food is a water-soluble fertilizer that will provide you with bigger and fuller rose flowers.


  • Easy to apply
  • Works instantly
  • Water-soluble
  • Comes with a feeder


  • The fed is too small

10. Scotts Rose And Bloom Plant Food

The Scotts Rose and Bloom Plant Food provides steady feeding that helps in high-quality blooms.

The product can be applied easily, and it provides the best results within a few days of application.

The formula is pretty safe, and thus, you can totally trust the brand. The fertilizer contains a high quantity of Phosphorus which will help in the best quality bloom of the plant.

The formula smells like fish, and thus, few customers may not like it. This is the best fertilizer for knockout roses that can be used on all ground as well as in containers.


  • Easy to apply
  • 100% safe product
  • High quantity of Phosphorus
  • Can be used in containers as well as on the ground


  • The plant food has a weird fish-like smell


1. Should I Fertilize My Rose Plant?

Yes, it is important to fertilize the rose plant. If you are planning to plant your rose in the fall, you have to wait till spring season to fertilize it.

It is advised to use liquid fertilizer to fertilize the rose plants. Use liquid fertilizer at ½ strength, and you can also use fish fertilizer at full strength.

In the second year of planting, you can use granular fertilizer if you want. But it is always advisable to fertilize your rose plant if you want a blooming and vibrant rose flower.

2. Should I Use Alfalfa On My Rose Plant?

Alfalfa is rich in protein, vitamins, and minerals. Use of Alfalfa on your rose plant will help you in nitrogen fixation, and it will also improve the texture of the soil in the long run. But keep in mind to not use Alfalfa in large quantities.

You need to use just 1 cup of Alfalfa around each rose bush. If you have a mini bush or a single plant, don’t use more than a half cup of Alfalfa. Make sure to use Alfalfa at least three times a year.

3. What Should Be The PH Of The Soil To Get The Best Quality Roses?

PH of soil is one of the most important criteria that can determine the quality of the rose plant. To grow roses, the PH of the soil should be between 6 to 6.5.

This means rose grows best in acidic soil. To know about the quality of soil, you can go for soil testing before planting rose. If the soil is too acidic, you can add lime to improve the texture and PH.

4. Can I Grow Roses In Containers?

Yes, roses can be easily grown in containers. Roses are flexible plants that can be repositioned easily.

But when you are planting them in a container, make sure that the container is large enough for the roots to grow properly.

A 15-gallon container is best suited to plant roses. Try to water regularly and deeply in the rose plants.

Try not to use a black pot for rose cultivation, as black colour attracts light and it may cause harm to the plant in the long run.

Making The Final Choice For Best Fertilizer For Knockout Roses

If you are looking for the best quality knockout roses that look beautiful and full of petals, use of fertilizers is recommended.

When it comes to using fertilizers in a rose plant, it is always advisable to go for a water-soluble fertilizer in the initial years.

Once the water-soluble fertilizer works well, you can use granular fertilizer after the first season of planting rose.

Here, we have provided a list of top 10 fertilizers for knockout roses. Use any of these fertilizers and let us know which one of these worked best for your rose plants.

Rose can be called the king of flowers, and no flower is as beautiful as a rose.

Thus, use the right fertilizers to get the best quality roses in your little garden.