What is the best potting mix for succulents and cactus?

The best potting mix for succulents and cactus is one that provides excellent drainage and aeration while also retaining some moisture. It’s important to create a well-balanced mix that mimics the natural environment of these plants, which typically grow in sandy or rocky soil with good drainage.

To create a DIY potting mix for succulents, you will need three main ingredients: sand, soil, and a mineral additive such as perlite or pumice. These components work together to create a well-draining and nutrient-rich medium for your plants.

First, let’s talk about the sand. You’ll want to use coarse sand or builder’s sand, which is gritty and allows water to flow through easily. Avoid using fine sand or beach sand, as it tends to compact and can lead to poor drainage. Using about two cups of sand ensures that there’s enough to promote drainage without making the mix too heavy.

Next, the soil component is crucial. A good choice is a well-draining, sandy soil mix that is low in organic matter. You can use a commercial cactus mix or create your own by mixing equal parts of regular potting soil and coarse sand. Avoid using heavy garden soils or soils that contain a lot of organic matter, as they tend to hold onto moisture and can cause root rot in succulents. Aim for about three cups of soil in your mix.

Lastly, the mineral additive is essential for improving aeration and preventing compaction. Perlite and pumice are great options for this purpose. Perlite is a volcanic glass that is lightweight and retains some moisture, while pumice is a porous volcanic rock that provides excellent drainage. You can choose either one based on availability and personal preference. Add about one-and-a-half cups of perlite or pumice to your mix.

Mix the sand, soil, and perlite or pumice thoroughly in a large container or bucket. It’s a good idea to wear gloves and a mask while doing this to protect yourself from dust and potential allergens. Once the ingredients are well combined, your DIY potting mix for succulents and cactus is ready to use.

When repotting your succulents or cacti, make sure to choose a pot with drainage holes and fill it with the potting mix, leaving enough space for the roots to spread. Gently place the plant in the pot and fill in any gaps with more potting mix, lightly pressing it down around the base of the plant.

Remember to water your succulents and cacti sparingly, allowing the soil to dry out between waterings. This potting mix will help prevent excess moisture and promote healthy root growth, which is crucial for the well-being of these plants.

The best potting mix for succulents and cactus is one that provides good drainage, aeration, and the right balance of moisture. By following the DIY recipe of mixing sand, soil, and perlite or pumice in a 2:2:1 ratio, you can create a well-draining and nutrient-rich medium that mimics the natural environment of these plants. Remember to adjust the quantities based on your specific needs and the size of the pots you are using. Happy gardening!

Photo of author

Caroline Bates

Caroline is a Miami-based landscaper who specializes in drought-tolerant landscapes. She is the mother of two young children and also enjoys writing for GreenPacks.org in her spare time. Caroline takes great pride in her work, and loves being able to share her knowledge with others through her writing.