The reason for the cacti and agave’s turning yellow during the summer, is a result of a sunburn due to the brutal temperatures we have here in Arizona. However there is always a solution to everything! Shade cloth can be used to protect the plants from getting sunburnt. Another suggestion is to consider planting a shrub or perennial on the west side of the plant or just about anything that provides shade to relieve some of the sun’s intensity on the plant! Proper location is essential for all plants in the desert.
