Environmental Fates, Nutrient Demands, and Efficient Nitrogen Fertility Programs to Maximize Corn Grain Yield Pioneer Seeds How to Grow Passion Flower Vine Growing In The Garden Budget Friendly Dollar Tree Vertical Planter The Best Time to Plant Grass Seed in Rochester, NY When cilantro goes to seed, the seeds can be planted to grow a new crop of cilantro or you can use them as a spice! Cilantro seeds are actually what we call Coriander when theyre used as a spice.