Bulb gardening in the southwestern and southern United States presents challenges unknown in cooler climates. Bulbs that turn Holland into a kaleidoscope of color droop and fade in our mild winters, hot summers, and uncertain rainfall. Yet hundreds of native and naturalized species of bulbs thrive in these same conditions and offer as many colors, shapes, and fragrances as even the most demanding gardener desires. These are the bulbs that Thad Howard...