Here they are grown in a medium made up mostly of leaf grow, the local soil and wood chips. If you want really big plants, select varieties which are known to put on size. Many of the traditional seed grown types top out at about a foot no matter how generously you treat them. Some of the clonally propagated sorts easily go up to three feet. And the 'Kong' series is a must if you like huge foliage.
Generations of gardeners knew these plants as coleus. They are currently placed in the genus Solenostemon.
This year there are about a half dozen big pots of them grouped on the deck. They are at their best in late summer, and it is certainly easier to enjoy them after the weather has cooled down a bit.