Garden troughs can contain large woodland landscapes, others are small and whimsical, and some even hold miniature rock gardens. Each has a distinct personality, which is part of the appeal of troughs. Because you can change the soil mix, you can grow plants in a trough that you couldn't grow in your garden otherwise. You can make troughs from hypertufa, which is a mix of portland cement, perlite, and peat moss. The grouping of troughs above contains mostly shade lovers.