The husk is hard, round and is light brown or grey in color. Before you plant them in the ground, you need to prepare the cilantro seeds to increase the chances that they will germinate. Soak the cilantro seeds in water for 24 to 48 hours.Click to see full answer. Keeping this in consideration, does cilantro need light to germinate?Cilantro needs full sun or light shade in southern zones since it bolts quickly in hot weather. It grows best in a well-drained, moist soil. Cilantro plants should be spaced about 6 to 8 inches apart. To harvest fresh cilantro all season, make successive sowings every 2 to 3 weeks starting in late spring.Secondly, how do you speed up seed germination? One easy way to make seeds germinate faster is to presoak them for 24 hours in a shallow container filled with hot tap water. Water will penetrate the seed coat and cause the embryos inside to plump up. Don’t soak them for longer than 24 hours because they could rot. Plant the seeds immediately in moist soil. Herein, how long do coriander seeds take to germinate? three weeks How do you grow coriander seeds at home?You can grow coriander in full sun and well-drained soil with a pH of 6.2 to 6.8. Sow the coriander seeds about half to one inch deep in the soil. Space the seeds at a gap of approximately 6 inches. Press the soil over the seeds and cover with the half-inch layer of fine mulch.