12-16 Days to maturity. Ocimum basilcum. Green Basil Microgreen Seeds. Use basil microgreens in place of regular basil in any recipe for extra intense basil flavor. Micro basil pesto is amazing. Basil microgreens are most easily grown in soil, but may also be grown on a hydroponic growing medium. Keep in mind, basil is mucilaginous and will appear with a gel coat once the seeds come in contact with water. ~19,000 seeds/oz.