Certified GKH Gardening Expert
It may not be enough sun for the plants you are growing. You should select plants that need only part sun. Also, avoid splashing water on the leaves when you water, hold the hose down into the container. Allow the soil to dry out between waterings. If the plants droop, water sooner. The brown areas could signal a fungal infection or overwatering. Remove the damaged leaves and any that fall onto the soil to help prevent further spread of any fungi.