Article in English: Cilantro thrives in spring and fall weather, so these two seasons are the best for planting it. Avoid planting cilantro in the summer, as the heat will cause your plants to flower prematurely. This will end your harvesting cycle of cilantro and leave you with bitter-tasting leaves. Whether you grow cilantro indoors or outdoors, plants will need at least some direct sunlight to grow. They also need some shade, however, to keep from overheating. Too much sun and warmth will cause the plants to go to seed, ending their harvest. If you are planting cilantro in small quantities, purchase a potting soil with a neutral pH falling between 6.0 and 8.0. If you are planting cilantro in your garden, test the soil first with a soil pH test kit. If you need to neutralize your soil, rake compost into it before planting cilantro. It is best to plant cilantro straight from seed, as seedlings are delicate and don’t fare well when they are transplanted. Sow the seeds approximately 0.4 inches (1.0 cm) into good quality soil. Seeds can be planted outdoors in rows or indoors in a medium-sized container.  Plants will take approximately 2-3 weeks to germinate. Avoid overwatering cilantro plants, which can overwhelm them. Give plants about 1 inch (2.5 cm) of water per week, or just enough to keep the soil moist at all times. Watch the soil and give the plants more water if it looks dry.

Summary in Vietnamese:
Trồng rau mùi vào mùa xuân hoặc đầu mùa thu. Chọn nơi có bóng râm một phần để trồng rau mùi. Trồng rau mùi trên đất có độ pH từ 6.0 đến 8.0. Trồng bằng hạt thay vì bằng cây con. Giữ đất ấm.