What can I do with old tomato compost?

Answered by James Kissner

When it comes to old tomato compost, there are several options for what you can do with it. One simple and effective approach is to mix the old compost with fresh material. This can be done by combining approximately half of the old tomato compost with an equal amount of new potting compost. By doing this, you are able to reuse the old compost while also introducing fresh nutrients and organic matter into the mix.

To further enhance the nutritional content of the potting mix, you can add a few handfuls of organic fertiliser. This will provide an extra boost for your plants and help ensure they have access to the necessary nutrients for optimal growth. Organic fertilisers are a great choice as they are derived from natural sources and are less likely to cause harm to the environment or your plants.

Another option for using old tomato compost is to utilize it in the bottoms of large containers. This is particularly useful for very large pots or planters where filling the entire container with fresh potting mix can be expensive or impractical. By placing the old compost in the bottom layer, you are able to use it as a base while still providing a fresh mix for the upper parts of the container. This can help save on costs while still ensuring your plants have access to the nutrients they need.

It is worth noting that while tomato compost can be a valuable resource, it is important to assess its condition before reuse. If the compost appears to be degraded, lacking in nutrients, or harboring any pests or diseases, it may be best to discard it rather than risk negatively impacting your plants. However, if the compost is in good condition and free from any issues, it can be a valuable addition to your gardening efforts.

In my personal experience, I have found that combining old tomato compost with fresh material and organic fertiliser has yielded excellent results. The plants have thrived and the compost has provided a good source of nutrients. Additionally, I have used the method of layering old compost in the bottom of large containers and filling the upper parts with fresh mix with success. This approach has allowed me to save on costs while still providing a suitable growing environment for my plants.

To summarize, there are multiple options for using old tomato compost. Mixing it with fresh material, adding organic fertiliser, and utilizing it in the bottoms of large containers are all effective ways to make the most of this resource. By reusing the compost, you can save on costs and provide your plants with the nutrients they need for healthy growth.