Do Fertilizer Spikes Work?

Most plants need fertilizer. Soil regeneration or the addition of nutrients and minerals stimulates plant growth or improves flowering and fertility. But sometimes it is difficult to know how many plants are needed for fertilizer and when to fertilize. Fertilizer spikes are an option that makes it easy to fertilize plants, but they work when used properly.

The spikes are hard made of vegetarian food and other ingredients. Many contain formaldehyde, others are completely organic. They grind the soil. Although fertilizer producers can claim that the maximum fertilizer level is suitable, this requirement only applies to a limited extent. Spikes work, but you still need to calculate the amount of fertilizer used for a particular product. Plants will suffer if you do not calculate correctly and have too many nails.

How They Work

Fertilizer spikes are designed to slowly release nutrients into the soil, and they do, but sometimes inefficient. Most nutrients are not released by water but by bacteria and fungi. Although fertilizer spikes are beneficial, they are not as cheap as a liquid or granular fertilizers, and sometimes it is difficult to get an exact dose because each branch contains a predetermined amount of nutrients. Due to the spike design, nutrients are released to the side, preventing nutrients from penetrating deep into the roots. Also, unlike liquid or granular fertilizers, when properly planted, nutrients are not evenly distributed in the soil.

Are Fertilizer Spikes Good for Fruit Trees?

Are Fertilizer Spikes Good for Fruit Trees

If you have never used spikes to fertilize fruit trees, you may wonder if they are effective. Are the fertilizer spikes good for fruit trees?

In some ways, using fertilizer spike helps the trees. Fertilizer spike takes the form of small balls that are stuck into the ground around the tree’s drip line once in spring and once in autumn. These products are very practical. They are easy to use and save the unpleasant process of measuring fertilizer and scraping it off.

Each spike contains fertilizer that is released into the soil. You can get spike for fruit trees, e.g. spikes for fertilizing citrus plants. However, using spike for fruit trees also has disadvantages that you should know about.

Should You Fertilize Fruit Trees with Spikes?

According to many experts, this method of fertilizing fruit trees is very desirable. As the spike sinks into the soil at certain points around the tree trunk, concentrated nutrients are released unevenly around the root system. This can lead to irregular root development, making the trees vulnerable to strong winds.

Fruit tree fertilizer spike can also allow insects to attack the roots of the tree. This path of pest infiltration can lead to damage or disease and sometimes even death in the fruit tree.

How to Use Them

How to Use Them

Fertilizer spike is best placed in soft, moist soil or special shafts around a tree or other tree. The use of spike depends on the particular brand, the size of the fertilizer plant, and the type of crop. For example, a potted plant may need only two to three spikes every 60 or more days, and rows of vegetables may need eight spikes per square meter. The spikes are usually inserted so that they are slightly below the ground and are evenly distributed around the target tree. However, follow the special instructions for using the fertilizer spike pack.

When to Use Them

Most plants fertilize at the beginning of the growing season. Some can be used after the first flowering or when they start to bear fruit. When you need to fertilize a lawn, it depends on the type of grass. If there is cold seasonal grass on the lawn, it should be propagated in spring and autumn. The lawn in the hot season should be fertilized in spring and summer. Indoor plants can be fertilized throughout the year. New plants usually do not use slow-release or controlled release fertilizers, such as spike, but warm plants can use these fertilizers during planting.


Fruit trees need different nutrients after planting and in the middle of the growing season. Thanks to granulated fertilizers, the nutrients can be specially adapted to the tree.