Here are the ones planted along our side fence (for scale, that's a 6 ft fence.) These were 15 gallon and have been there about 2.5 years. First winter, we had a rare snow. The next summer, our sprinkler system was out, as the main line was severed by the pool dig. Last summer was a drought with City of Katy asking for voluntary water conservation. This summer has been alternating periods of heavy rain and no rain. The Eagleston Hollies took it all. Supposed to be OK in USDA zones 6a through 9b. We're in the northern part of 9a.