Hardiness: USDA Zone 4a: to -34.4 °C (-30 °F) USDA Zone 4b: to -31.6 °C (-25 °F) USDA Zone 5a: to -28.8 °C (-20 °F) USDA Zone 5b: to -26.1 °C (-15 °F) USDA Zone 6a: to -23.3 °C (-10 °F) USDA Zone 6b: to -20.5 °C (-5 °F) USDA Zone 7a: to -17.7 °C (0 °F) USDA Zone 7b: to -14.9 °C (5 °F) USDA Zone 8a: to -12.2 °C (10 °F) USDA Zone 8b: to -9.4 °C (15 °F) USDA Zone 9a: to -6.6 °C (20 °F) USDA Zone 9b: to -3.8 °C (25 °F) USDA Zone 10a: to -1.1 °C (30 °F) USDA Zone 10b: to 1.7 °C (35 °F) USDA Zone 11: above 4.5 °C (40 °F)
On Apr 2, 2012, wakingdream from Allentown, PA wrote:
I purchased this plant at a nursery one year ago, not in bloom. When I pulled it out of the pot, the strangled root system was a shocker. There was almost no soil to be seen, just roots. I sliced right down the middle with my gardening knife and planted both pieces near each other, adding a ton of my own compost to the planting holes. It recovered and bloomed well. It is now emerging from its winter dormancy. I look forward to the vivid blue-purple spires. Zone 6 southeast PA
On Nov 22, 2010, Michael_Ronayne from Nutley, NJ (Zone 6b) wrote:
In Northern New Jersey Veronica spicata 'Royal Candles' (PP18932) is highly attractive to whitefly infestation but don’t appear to be harmed by the whiteflies. However, nearby plants such as Hibiscus mutabilis, and possibly other Hibiscus, are damaged by the whiteflies. Depending on locality be prepared to deal with whiteflies. The plant itself is very pretty and grows well; it is the uninvited dinner guests which are the problem.
On Feb 7, 2007, Bellisgirl from Spokane, WA wrote:
I love this Veronica! Ive had mine for over five years now. I have divided it several times and now have four large healty plants. Flowers are a gorgeous deep blue-purple; will rebloom frequently if deadheaded.
This plant has been said to grow in the following regions:
, Benton, Arkansas Palo Alto, California Sacramento, California San Jose, California Seymour, Connecticut Century, Florida Stone Mountain, Georgia Chicago, Illinois Lake In The Hills, Illinois Machesney Park, Illinois Plainfield, Illinois Washington, Illinois Wilmette, Illinois Coalville, Iowa Hebron, Kentucky Stockton Springs, Maine Beverly, Massachusetts Tyngsborough, Massachusetts Belleville, Michigan Dearborn Heights, Michigan Pinconning, Michigan Nutley, New Jersey White House Station, New Jersey , New York Warwick, New York Broadway, North Carolina Cajah's Mountain, North Carolina Belfield, North Dakota New Miami, Ohio Ravenna, Ohio Oklahoma City, Oklahoma Deschutes River Woods, Oregon Molalla, Oregon Allentown, Pennsylvania Ashley, Pennsylvania Baden, Pennsylvania Butler, Pennsylvania Ephrata, Pennsylvania Philadelphia, Pennsylvania Conway, South Carolina North Augusta, South Carolina Aberdeen, South Dakota Algood, Tennessee Knoxville, Tennessee Murfreesboro, Tennessee Copper Canyon, Texas Lubbock, Texas Mansfield, Texas Farr West, Utah Lexington, Virginia Short Pump, Virginia Springfield, Virginia Woodford, Virginia Town And Country, Washington