Every grower has a slightly different holding system. Following is a description of a typical post and cable line system to hold plants.
Use ¼” high tensile cable, especially when holding containers of 30 gallon or larger. Use 4” by 6” treated posts that are 8’ long. Using an auger, bury the posts into the ground 3 feet. The posts are placed 50’ apart for support. The entire run of the cable, however, could be over 400’. Ground anchors, similar to what is used to anchor a mobile home, anchor the cable to the ground on each end. A turnbuckle is placed at the mid-point of the cable line. The turnbuckle is used to tighten and loosen the cable line as needed. If the Tree Collars are placed every 5’, this 400’ line will hold 80 trees.