The portulaca, also known as the moss rose, is a low-growing flower that is usually grown as an annual. In full sun locations, it may reseed itself, giving it somewhat perennial tendencies, and the ...

they thrive in warm temperatures above 60 degrees and can be grown as perennials in zones 10 to 12. For those in climates that experience frost, they can be treated as annuals. "Portulaca plants ...