Last updated: August 26, 2021
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Roses have always been a symbol of love and it is not for nothing that they are among the most popular garden plants. For magnificent growth, they often need the support of rose fertilisers. These come in various forms.

To help you find the right rose fertiliser for your roses, we have summarised the most important questions and criteria. We also present a few rose fertilisers in more detail to give you an overview of the selection.


  • Rose fertiliser comes in a variety of forms, such as pellets or even liquid fertiliser. Some are long-lasting and only need to be applied once a season, while others should be used weekly.
  • There are mineral and organic rose fertilisers that work differently depending on the ingredients and also need to be applied at a different time.
  • Rose fertiliser is available for use on your roses indoors or for your rose garden. This is why you can get liquid fertilisers with a content of 500 millilitres or large packages weighing 20 kilograms.

The Best Rose Fertiliser: Our Picks

Buying criteria for rose fertiliser

Not all rose fertiliser is the same. To help you find the right rose fertiliser for your garden, we have summarised the most important criteria at a glance. This should make your choice easier.

We will now go into these criteria in more detail so that you are well informed before making your purchase.

Application frequency

Depending on the ingredients of the rose fertiliser, you will need to fertilise the roses with varying frequency. There are fertilisers that you only need to use once per season, i.e. every 5 months or so. Some rose fertilisers you should use once a week, especially between spring and autumn. In winter, i.e. from November to February, it is sufficient to fertilise the roses once a month.


Roses need a lot of energy to grow. In general, a distinction can be made between organic and mineral fertilisers. Organic fertilisers contain main and trace nutrients, while mineral fertilisers consist of salts. However, there are also mixed forms, i.e. organic-mineral fertilisers. If you place a lot of value on sustainability, there are also some rose fertilisers that are certified organic.


Most rose fertilisers are very easy to use, so you don't have to worry if you don't have a green thumb. Many liquid fertilisers have a dosage guide in the cap, which is easy to adjust with the amount of water. They are also good for indoor plants. Another form of rose fertiliser is pellet fertiliser, which is easy to distribute and can be dosed well because of its shape.


The size range of rose fertiliser products covers a wide range. You can buy rose fertiliser weighing from one kilogram to 20 kilograms. For liquid fertiliser, the volume is one to two litres. Depending on your needs, different sizes are suitable.

If you want to fertilise indoor roses, lighter rose fertilisers are sufficient because they are easier to dose. If you have a rose garden, it makes sense to use several kilos, as you will get something out of it for longer.


In addition to the purchase criteria, there are questions that arise when buying rose fertiliser. To keep you well informed, we have selected a few of these frequently asked questions and answered them in detail.

What is rose fertiliser all about?

Roses need a lot of care because flowering is very energy-intensive and they need to have a lot of reserve material stored up at the end of the growing season. Rose fertiliser helps the roses to do this. Rose fertilisers are complete fertilisers. This means that they contain all the main and secondary nutrients. If you want your roses to have full and large flowers, you should support their growth with rose fertiliser.

What types of rose fertiliser are there?

In most cases, rose fertiliser comes in the form of pellets or in liquid form. As already mentioned, there is a general distinction between organic and mineral rose fertiliser. However, there are also mixed forms that are organic-mineral. Mineral fertiliser leads to rapid growth, but this can easily lead to over-fertilisation. In addition, mineral fertiliser can lead to deficiency symptoms in the long term.

As the blossoming of the rose flower requires a lot of energy, roses often need the support of rose fertilisers (Image source: Darren Richardson / Unsplash)

Organic fertiliser has a slower effect because the ingredients first have to decompose in the soil. On the other hand, the roses are better cared for in the long term. If you are also concerned about sustainability when fertilising your roses, there are certified organic fertilisers for your roses.

Is rose fertiliser dangerous for pets?

In general, rose fertilisers are not particularly dangerous. However, mineral rose fertilizers consist of salts that can have an irritating effect, which is why you should keep children and pets away when fertilizing. In addition, consumption of mineral fertiliser can be toxic, but the critical dose is very high. Organic fertilizers are safe for pets and children.

When should you use rose fertiliser?

When roses are planted, fertilising is not yet necessary, as it is more important that they take root well than that they produce flowers. At the latest in the third year after planting, roses should be supported with rose fertiliser, as they may have already used up the natural substances in the garden soil. Organic fertiliser should be used in spring as it takes longer to work. If you fertilise in summer, then you should use mineral or mixed fertilisers, as these work more quickly and the roses will be stronger for the winter.


Rose fertilisers help to ensure that your roses in the garden bloom beautifully and for a long time. They provide the plants with sufficient nutrients. Different rose fertilisers are suitable depending on your needs. Mineral rose fertilisers are suitable for quick blooming. For a long-term and sustainable existence of your roses, however, you should rely on organic rose fertilisers.

If you are short on time, there are slow-release fertilisers that can be applied once a season. Depending on the fertiliser, you should make sure that you fertilise your roses in good time so that they get through the winter well and can bloom again in spring.

Image source: Justin DoCanto / Unsplash