Outsidepride Tulsi Holy Basil Ocimum Tenuiflorum Medicinal Herb Plant Seed - 1000 Seeds Holy Basil grows as a tender perennial in USDA Zones: 9 - 11. This medicinal herb thrives in a full sun area. Ocimum tenuiflorum, also known as Tulsi Holy Basil reaches a height of 20 inches and is a highly aromatic plant with pink blooms from mid summer to early fall. This Basil is used as a culinary herb as well as medicinally with many benefits such as fighting fevers associated with malaria, dengue fever, colds and flu by making a tea from the leaves. Sow these heirloom seeds at 1 seed per inch in well-drained soil and keep the soil moist but not saturated until germination occurs in 7 - 14 days. Our seeds are always Non-GMO and packaged for the current year.