Other factors which exacerbate the pest risk are inadequate pest control, plants collected from the wild, the continual flow of plant material into and out of facilities and soil movement from adjacent agricultural areas.

• 其他加剧有害生物风险的因素还包括病虫防治不足够，植物采自野外，植物频繁进出盆景场，附近农田的土壤运输等。