What is the best kind of wood to use when building a wood fence?

You need: 4x4s for posts Concrete to set the posts in Gravel to put in the bottom of the holes before you put in the concrete 2x4s to attach the pickets 16d nails to attach the 2x4s to the 4x4s Pickets Either 4d hot dipped galvanized ringshank nails or 1-5/8" deck screws to attach the pickets to the 2x4s Outdoor stain or paint if you want to change the color of the fence Waterproofer to keep the fence in good shape Calculating the amount of materials needed: 4x4s: Divide the length of the fence by 8. Add one at the end of the run, and one for each walk gate. (For double drive gates, you don't need to add one.) Concrete: Two bags per post Gravel: One bag per two posts 2x4s: Multiply the 4x4s by three. Always put three runs of 2x4s up: one a foot from the ground, one three feet from the ground and one five feet from the ground. For each double drive gate, add two more 2x4s per panel to make crossbracing. For each walk gate, add one 2x4 for crossbracing. Pickets: Multiply the length of the fence by 12, then divide by 5.5, and finally add an additional 10 percent. These come in bundles of 320, so if you're close to that get a full bundle because it's easier to handle. Nails: One pound of 16d per six fenceposts. One pound of picket fasteners per 20 feet of fence length. Walk gate hardware: Every home center in America carries a "gate kit" that contains the hinges, latch and bolts. Get one of those; they cost about $12.95. Drive gate hardware: Do NOT get two "gate kits" because the hinges aren't strong enough. You will need: six 8" heavy-duty tee hinges, galvanized finish
one latch
one 18" cane bolt
one 6" x 3/4" galvanized pipe nipple
24 5/16" x 3" lag screws
24 5/16" x 2" lag screws
one spray can automotive primer
one can gloss black spray paint