Nasturtiums in Central Texas Nasturtiums are a cool-season annual in Central Texas and are easily grown from seed in pots or seeded directly in the garden. Native to the mountain regions of Central Mexico, Argentina and Chile, they thrive in cool temperatures, but do not tolerate freeze or frost. The plants will fade when it gets hot, so planting when it is cool is mandatory. Nasturtiums are easy to grow from seed,  and are a fun project for late winter gardens.       Nasturtium seeds are large and have [...]