You can also make your own succulent soil, which will allow you to have more control over drainage. You should choose a little more for your cacti. Although it is not suitable for filler material the large shreds can be used to improve the drainage of your mixture. It is important to water the plant less during winter dormancy. Root rot can be caused by excessive moisture. You should wait until the plant begins to show signs that it is wilting before watering it in winter. It is best to wait until the soil has dried completely before trying to remove it from the pot.