I found this unique wood pallet fence and planter at a friend's house in California.
A raised bed garden, built with pallets, was constructed at the corner of the porch. The fence attached to it rambled downhill around the yard.
The pallet was deconstructed as the fence is about a half-pallet tall. The top half has a bottom nailed in. Soil was added and vegetables and flowers were planted. Good soil was put in the bottom rail of the fence and more veggies were planted.
Vegetables suited for the top row of the fence would be lettuce, spinach and other greens, radishes, and green onions. Taller plants such as collard greens, peas and beans would be great for the lower row.
This fence appears to be built of double sided pallets. (See photos below.)
This photo was on pintrest. What a wonderful idea!
These unique building blocks come in different configurations. The one-sided stack to the right is made with three heavy posts, probably 4 X 4 inches, as the base. Crosswise to that are nailed three 1 X 4 boards,one on each end and one in the middle. Then lengthwise again are five boards. The dimensions of the complete pallet are about 39X48 inches.
The left pallet is different. The support bars are thinner. Narrower, thinner boards are nailed to both sides, perpendicular to the base.
Whatever the configuration of your find, you can cut and rearrange the pallets to suit your plan.