There are a few rules to keep in mind when choosing the right potting mix for propagation and they apply to all houseplants, including the Alocasia Dragon Scale. Firstly, you want to always use new potting mix rather than using old mix from other plants. This is because potting mix can contain bacteria or pests that you don’t even know are there. So making sure that you’re using new potting mix can avoid cross-contamination between your plants. New cuttings and plants are especially sensitive to infections or pest infestations so you need to be extra careful here.
The other thing you need to do is choose a high-quality mix. Your new Alocasia Dragon Scale plant will need the right balance of nutrients to help with root growth so make sure you use a good mix.