For sowing and starting plants, we recommend using a low-nutrient substrate, such as our Plantura Organic Herb & Seedling Compost. Our seedling compost is a lot looser, which encourages root growth in young seedlings. Once the plants are a little bigger, you can transplant them into a more nutrient-rich compost like this enriched compost. You will be well on your way to an abundant and aromatic harvest if you use both Plantura Herb & Seedling Compost and Plantura Enriched Compost.