Ive got a real small yard so ive had to place one of my raised beds against a retaining wall that is about 2 - 1/2 feet tall but the problem is that this wall is on the SOUTH side of the bed. I was originally thinking of adding a trellis to that whole south side of the bed since its kind of unaccessable anyway. but now im thinking it will shade all the plants. I really need to leave the north side of this bed completly open so i can access the bed. BTW I didnt mention the bed is 16ft long and 3ft wide. I chose to make it 3ft cause I dont really have great access to the bed from the retaining wall side. If i do put a trellis on this south side are there particular plants which wont shade out the others much? I do have 3 other beds - 1 4x16 and the others 4x8 im putting in that i will be putting in trellis on the south sides.