There are two main types of peonies to grow — herbaceous peonies and tree peonies. But if you want a little of both, you can select intersectional peonies, a hybrid cross between herbaceous and tree peonies. Peonies grow in U.S. Department of Agriculture plant hardiness zones 3 through 10, depending on the species.Click to see full answer. Similarly, it is asked, what zone can peonies grow in?Peonies can be grown in USDA zones 3-8 (they can also be grown in zone 9 with a little extra effort) and need a winter chill to bloom. It’s not an exact science, but a rule of thumb is that the daily low temperature in winter needs to fall below 40 F for at least six weeks, says Gagan. how long does it take for peonies to grow? Set them in place in early spring so stems can grow through the grid. Peonies rarely bloom the first year after planting. It often takes three years before you see an abundant display of flowers. But once the plants do start blooming, you can look forward to a lifetime of beautiful flowers. People also ask, where do peonies grow the best? Peonies like full sun, and though they can manage with half a day, they bloom best in a sunny spot. Provide shelter from strong winds. Plant away from trees or shrubs as peonies don’t like to compete for food and moisture. Grow peonies in deep, fertile, humus-rich, moist soil that drains well.Can you grow peonies in Las Vegas?The earliest that you can plant peonies in Las Vegas is February. However, you really should wait until March if you don’t want to take any chances. The last month that you can plant peonies and expect a good harvest is probably September. You can get started a little bit earlier by starting your peonies indoors.