Planting next to a wall/fence
I just noticed that now that my landlord has trimmed a large fir tree in my back yard, there is now a spot with enough sunlight to grow a few tomato plants. They would be in a fairly narrow raised bed with reasonably deep soil, right on the south side of a tall wooden plank fence. The spot will get at least 8 hours of sunlight every day in the summer time, I estimate.
I am wondering if there are any shenanigans involving this fence that I can use to benefit the plants. Would hanging reflective material on it give the plants a significant amount of extra sunlight? Or would putting something black there keep them warmer? It doesn't often get much warmer than 90*f in the hottest part of summer around here, and the nights tend to be cool. When I plant tomatoes out around 5/1 it is borderline "too cold" for them at night. Could a wooden fence retain enough heat to be useful at night?