There are a few different ways to ensure that your Southwestern plants stay healthy and thrive. One of the best ways to do this is by ensuring that they get enough sunlight. Southwestern plants can't handle too much shade and should be placed in a sunny spot in the yard. They also need to be watered regularly, but make sure that you don't over water them because this can cause root rot. Your Southwestern plants will also need fertilizer every month or two, so make sure you have some on hand at all times.