When it comes to caring for cacti and succulents, there are a lot of tips and tricks out there. One common piece of advice is to use compost as a fertilizer for these plants. However, this may not always be the best option. In fact, it is often recommended to avoid using compost on cacti and succulents altogether.
Cacti and succulents are known for their ability to thrive in dry and arid conditions. They have adapted to survive in environments with low levels of nutrients and water. As a result, they have developed specialized root systems and thick, fleshy leaves or stems to store water. These plants are not used to receiving large amounts of nutrients, and over-fertilizing them can actually do more harm than good.
Compost is a rich source of nutrients, which is great for most plants. However, for cacti and succulents, it can be too much of a good thing. When these plants are exposed to high levels of nutrients, they can become stressed and their growth can be stunted. This can also make them more susceptible to pests and diseases.
In addition, compost can change the pH level of the soil. Cacti and succulents prefer a slightly acidic soil, with a pH level between 5.5 and 6.5. Compost, on the other hand, tends to be more alkaline, with a pH level between 7 and 8. If the soil becomes too alkaline, it can affect the plant’s ability to absorb nutrients and water, leading to nutrient deficiencies and other issues.
Another reason to avoid using compost on cacti and succulents is that it can retain too much moisture. These plants are used to dry conditions and do not like to have their roots sitting in wet soil. Compost can hold onto water for longer periods of time, which can lead to root rot and other fungal diseases. This is especially true for plants that are kept in containers, as the excess moisture has nowhere to go.
So, what should you use instead of compost for your cacti and succulents? The best option is a specialized fertilizer specifically designed for these types of plants. These fertilizers are formulated to provide the right balance of nutrients without overloading the plants. They also tend to have a lower nitrogen content, which is important for cacti and succulents as too much nitrogen can cause excessive growth and weak stems.
When choosing a fertilizer for your cacti and succulents, look for one that is labeled as «cactus and succulent fertilizer» or «low-nitrogen fertilizer.» You can also opt for a liquid fertilizer, as it is easier to control the amount of nutrients being applied to the plants. It is important to follow the instructions on the fertilizer packaging and not to over-fertilize your plants.
In addition to using a specialized fertilizer, there are other ways to provide nutrients to your cacti and succulents. One option is to use a slow-release fertilizer, which will gradually release nutrients into the soil over time. Another option is to use a top dressing of compost, rather than mixing it into the soil. This will allow the compost to break down slowly and provide nutrients without overwhelming the plants.
It is also important to remember that cacti and succulents do not need to be fertilized as often as other plants. In fact, they can go for long periods of time without any fertilization. It is best to fertilize them during their active growing season, which is typically in the spring and summer months. During the fall and winter, when the plants are dormant, they do not need any fertilization.
In conclusion, while compost is a great natural fertilizer for most plants, it is not the best option for cacti and succulents. These plants prefer a more arid and nutrient-poor environment, and over-fertilizing them can do more harm than good. Instead, opt for a specialized fertilizer or other methods of providing nutrients, and remember to fertilize sparingly and only during the active growing season. With the right care, your cacti and succulents will thrive and continue to bring beauty to your home.
