aThe African marigold,along with other plants,are well known for companion planting,as they give off chemicals from their roots or aerial parts that keep pests away and protect neighbouring plants. 万寿菊,与其他植物一起,为伴侣是知名的种植,因为他们释放化学制品从保持虫去并且保护邻居植物的他们的根或...