Depends on what species of Heuchera you are looking at. Most will do well in full sun but can handle light shade in hot inland areas. Some will grow in all zones a few will only grow in zones 15-24. Some are compact plants with flowers on the end of longish stems. Some grow in clumps up to 4 feet wide with stems of 2 feet. Which one are you looking at and we can narrow it down for you.