Cucumbers are one of my favorites to grown in a container. Cucumbers need support so you need to get a trellis or tomato cage for them to grow in. Usually it says they do well in full sun but I do a lot better with them in at least partial shade.
How to prevent powdery mildew on your cucumber plants? Powdery mildew is a problem I have always encountered when growing cucumbers in containers. The best way to minimize powdery mildew is to avoid getting the leaves wet when you water, and to water in the morning as opposed to night time. This ensures the leaves have time to dry off.