Cliff faces and rock-strewn hillsides in Mexico are home to golden sedum (S. adolphi), among the world’s fastest-growing succulents. Up to eight inches tall, plants bear rosettes of fleshy ...

But do ground covers actually work to keep weeds out? Yes, some do. Stringy stonecrop (Sedum sarmentosum) and biting stonecrop (Sedum acre) are two varieties of goldmoss that make a great choice.