G.S. Long Company is an agricultural, chemical, and fertilizer retailer located in Yakima, Washington that has been family ow ... ned and operated since 1980. Our service area stretches across the Yakima Valley, Columbia Basin, Horse Heaven Hills, and Ellensburg. With our offices centrally located among these major growing districts we are able to provide our customer base with consulting services, crop protection, nutritional inputs, and product delivery. In addition to our Union Gap and Wenatchee locations, we also have an Oregon branch which services the tree fruit districts of the Hood River Valley. G.S. Long Company was founded on customer service and we pride ourselves in being a service orientated company. From field service to product delivery and everything in between we offer a great deal of service to our customers. In keeping with this tradition, we have been a proud member of the IAP Group since 1999. read more