A native of Southeast Asia, elephant ear is hardy in U.S. Department of Agriculture (USDA) plant hardiness zones 8 through 11. In USDA zones 8 through 9, elephant ear usually dies to the ground, returning in spring once soil temperatures warm. In USDA zones 10 through 11, the plant is nearly an evergreen, according to the Floridata website. Partial shade is ideal for the plant, though with enough water it withstands full sunlight.
In your case my guess is your fence posts were taller than the fence, so your wood fence posts should be in the ground at least 3 feet. When it is time to install the fence post, be sure it is in line with the other posts and it is plumb.It is also important that the fence post is centered in the hole.Start to add the crushed gravel in 5-inch lifts.our fence posts have a tremendous amount of force against them each time the wind blows. You may not think a 5-foot-tall fence is high, but in terms of wind load, it is substantial. To get an idea of what I am talking about, lift a 4x8 sheet of plywood up and take it outdoors on a windy day.
Re: Setting fence posts in gravel rather than concrete and other fence tips and trick. You have a good plan, to avoid the concrete. Use backfill that can be tamped to set the post. Limestone gravel with fines can be tamped, but I find just tamping the soil back around the post is just as good.or us, it is required to dig the hole for the post with a flair or bell shape at the bottom and to set the posts in concrete. Also, you need to use pressure treated wood from one fo the big box stores or a lumber yard. Treating the posts with a spray will not last if the wood is in contact with the soil or concrete.