San Luis Potosi is noted for having one of the largest varieties of cacti in the world. When you first see one while hiking or driving on the highways you think they all very similar until you start taking interest in them and then realize that the difference and variety of species is immense. Some are very small and just barely visible because just the top parts show up above the soil, others are very tall and thin, while others like this particular one are at least 3ft. high and about 2 ft. in its circumference. One this big is usually close to a century old. They usually grow on the sides of mountains but will also be found on flatter land. One thing that I have noticed is that if you find one, you will probably find at least a dozen several yards apart in the same area and then if you walk a bit more, you will find a completely different species close by.
The one in this picture is a few yard from our ranch home and it will be in full bloom in about a week. All of those buds will turn into gorgeous bright yellow flowers and after they dry and fall off, the fruit will be left on the cactus. It is a small elongated fruit about the size of a fig in colors ranging from burnt orange to deep red. They have a sweet sour taste to them and many people love to enjoy the savor while drinking tequila.