If you’d like a pre-mixed option, a peat-based mix is generally the best option. These both work well (via Amazon): Fox Farm ...

Don Kinzler writes: "Premoistening mix is important because the ingredients in the growing mixes are dry and they’re often difficult to rewet." ...

My ZZ plants do best in potting mix that holds moisture yet also drains ... Ideally, you want something light, aerated in ...