The best fertilizers for petunias

Tips to make your petunias bloom more

Petunias are highly appreciated plants, because they are capable of filling our home with flowers and color in the hottest months of the year. Therefore, it is worth giving them the care they need and, for you to achieve this, we are going to explain to you what the best fertilizers for petunias.

Although these plants are not demanding in terms of care, if you improve the quality of their planting medium you will notice that the foliage becomes denser and flowering is more intense.

Do petunias need fertilizer?

Whether they are potted As if they were planted in the ground, in order to thrive and maintain the abundant and continuous flowering that characterizes them, petunias require a series of nutrients that you can provide them with fertilizer.

The essential nutrients they need are:

  • Nitrogen. Which promotes vigorous growth of leaves and stems.
  • Match. Which encourages root development and flower production.
  • Potassium. Which is responsible for improving the general resistance of the plant, the quality of the flowers and the ability of the petunia to withstand adverse conditions.

It is convenient to apply fertilizers for petunias in the manner and with the frequency that we will see later. However, pay attention to the appearance of the plant, because this can give you clues about the nutrients it is missing.

Thus, yellow leaves tell us about a nitrogen deficiency. While poor flowering may be the result of a lack of phosphorus. If you notice that the plant shows weak growth and is not resistant to diseases, the cause may be a potassium deficiency.

Fertilizers for petunias

Tips for applying fertilizers for petunias

There are four basic types that we can combine with each other:

Slow release fertilizer

It is a fertilizer that is applied around the plants or mixed directly with the soil, and is responsible for releasing nutrients little by little over several weeks or months. Its advantage is that it reduces the need for frequent fertilization and It ensures that the plant will have access to the nutrients it needs.

liquid fertilizer

It is applied together with irrigation water and is quickly absorbed by the roots. Its strong point is that it provides an immediate dose of nutrients that enables vigorous growth. and abundant flowering.

Water soluble fertilizer

They are products that dissolve in water and are applied later during irrigation. Its operation is very similar to that of liquid fertilizer, the only thing that changes a little is the format.

Compost and organic fertilizers

Among the fertilizers for petunias, homemade compost, composted manure and other organic fertilizers should also be highlighted. All of them are responsible for improving the soil structure and releasing nutrients little by little. Besides, They promote beneficial biological activity around plants.

A subscription for every need

When choosing fertilizers for petunias, we must take into account what needs our plants have. This way we can select the most suitable product for them at all times:

  • For balanced growth and abundant flowering. In this case, it is best to choose a balanced slow-release fertilizer, which ensures that the plant will have a constant supply of nitrogen, phosphorus and potassium.
  • For a quick boost of nutrients and improved flowering. The simplest thing is to use a liquid fertilizer with a high concentration of phosphorus.

Tips for applying fertilizers for petunias

Fertilizers for petunias

At the beginning of the season it is advisable to apply a slow release fertilizer, which offers the plant a good nutritional base for its growth. This fertilizer can also be added directly at the time of planting.

Throughout the season It is advisable to apply liquid or soluble fertilizers together with water every two weeks during the flowering season. This stimulates the appearance of flowers and makes them develop better.

If you don't want to have to worry about adding fertilizer to the irrigation water, you can apply homemade compost. This way, you are guaranteed that your plants will receive the nutrients they need.

What you should never do is apply excess fertilizer. This is not going to make the plant prettier, grow more or have more flowers, the opposite can happen. If we apply more fertilizer than due, burns can occur on the roots that will cause serious damage to our petunia.

The easiest way to get it right when providing fertilizer to plants is to follow the instructions given by the product manufacturer.

In the case of applying liquid fertilizers that can be used on the leaves, you have to do it carefully. It is advisable to use the product in the late afternoon, so that it dries overnight and the leaves do not suffer burns.

Tips to make your petunias bloom more

Tips to make your petunias bloom more

Beyond providing them with adequate fertilization, there are some care tips that can help you ensure that your petunias are always full of flowers, take good note:

  • Sunny location. Make sure they receive 6 to 8 hours of direct sunlight each day and you will achieve healthy and vigorous flowering.
  • Good drainage. Choose pots or soil with good drainage capacity for them, because an accumulation of water in the roots inhibits flowering.
  • Regular watering. Keep its soil evenly moist, but not soggy.
  • Removal of flowers. Remove any flowers that are already wilted. This “dead pruning” stimulates the appearance of new flowers, because it allows the plant to focus on flowering instead of generating seeds.
  • Light pruning. When the plant starts to look untidy, do some light pruning. This promotes more compact growth and encourages branching, and the more branches your petunias have, the more flowers they will produce.
  • Aeration and space. Leave enough space between your plants so that air can circulate. This reduces the risk of fungus and promotes healthy growth.

By following these tips and applying fertilizers for petunias correctly, you will make these small plants look spectacular and fill your house with color with their flowers.


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