We all have old buckets and plastic tubs lying around, so instead of letting them sit in some dusty corner, why not do something productive with them? Just wash out each container thoroughly; then cut holes in the bottom for drainage. Large buckets and tubs make great homes for plants because they can hold so much soil. Therefore, you can plant multiple smaller plants or single larger specimens that need a bit more room, like dwarf citrus trees. However, even if you have multiple drainage holes (and you should in a container this size), it can still be difficult for all the water to escape when the tub or bucket is lying flat on the ground. To prevent oversaturation and root rot, use wooden planks to elevate the container a few inches off the ground.