For that reason you need to put your National Drug Code (NDC) into a Universal Product Code (UPC) barcode in the United States. A UPC-A barcode symbol contains a GS1 GTIN-12 data structure. Here is what you need to do to convert your NDC into a GS1 GTIN-12:
How to Harvest Cilantro. 1  Cilantro leaves can be cut at any time during their growth period, but waiting until the plant is about 6 inches tall will give you optimum leaves.  Cut the outer leaves first, allowing the smaller leaves that are closer to the stalk to continue to grow and mature.
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. From the time of sowing seed, cilantro leaves can begin to be harvested in about 3 to 4 weeks. Cilantro seeds can be harvested in about 45 days. Cilantro has been used for many centuries in the cooking of Mexico, India, Africa, Spain, Russia, China, many areas of Asia - especially Thailand, and the Middle East. It is thought to be native to North Africa or the Middle East.