The most common type of hydrangea is a Bigleaf, or French hydrangea (Hydrangea macrophylla). These cold-hardy, drought-tolerant hydrangeas are exceptionally low-maintenance and yield gorgeous blossoms perfect for cutting and drying. The plants are hardy to Zone 3, and it can grow 4-5 feet tall and 3-5 feet wide. The chartreuse flowers of 'Limelight' hydrangeas age to a mellow pink as the season progresses. Be sure to water it during dry spells and add a two- to four-inch-deep layer of mulch on the soil around its base to help slow down water evaporation. Hydrangea paniculata 'ILVOBO' PP #22,782; CPBR #4910. Oakleaf hydrangeas are native to the southeastern United States, so they tolerate hot, humid weather and aren't quite as cold hardy as other types of hydrangeas. It’s covered all summer long with loads of the large white flowers you see in the photo, on stiff stems. (Hydrangea arborescens) Selling points: Cold hardy and forgiving of dry shade, this tough North American native boasts white, sometimes pink, dome-like blooms starting in early summer and lasting into fall. Consider compact hydrangea Bobo. These are categorized in mophead (big puffy balls), lacecap (similar to mophead but with tiny buds in the center) and mountain (similar to lacecap, but extremely cold hardy with smaller blooms). Hydrangeas have been a fixture of the garden since the concept of gardening was invented, and for good reason. It produces huge, symmetrical blooms up to 8 inches in diameter in June and July. Be the first to review this product. While they are hardy plants they are very sensitive to loss of moisture. 8095. To prevent problems in the winter, choosing the right type of hydrangea is essential. First, consider how much sunlight it needs. While it can take cold temps, it is not very drought tolerant, especially if it's in a spot that gets afternoon sun. These two species are exceptionally cold tolerant (down to USDA zone 3) and heat tolderant (up to USDA zone 8b, 9a in some cases), so they thrive in all but the hottest parts of North America. Some hydrangeas are cold-hardier than others. The plant is hardy to Zone 4. This extra-hardy hydrangea thrives in Zones 3-9 in part shade. Limelight hydrangea trees are a stunning variety, with an enormous display of 10-inch, pale green blossoms each summer that transition to soft white, cream, and pink through fall. Hydrangea arborescens "Annabelle" is also known as a Snowball hydrangea (or smooth hydrangea). There are very few rules in gardening, but perhaps the most important one is to work within your zone. Bobo® Hardy Hydrangea. In fall, they blush a soft pink before turning brown for winter. Poliuszko / Getty Images Green flowers are the little black dresses of the gardening world: they flatter all situations. 'Snow Queen' has 4- to 12-inch-long white panicles that change to a rosy shade by fall, when they coordinate with the red-burgundy-purple color change of the leaves. This hydrangea is cold-hardy to USDA zone 3, which has an average minimum temperature of -35 degrees F. This zone extends to parts of Montana, Wisconsin, Minnesota and even parts of Alaska. These amazing plant provide beautiful flowers across much of North America, making them a staple anywhere beauty is appreciated. grow, most reliable hydrangeas: hardy hydrangeas, like smooth or native hydrangea (H. arborescens) and panicle or peegee hydrangea (H. paniculata). USDA Zone? Hydrangeas are woody shrubs with bright beautiful heads of flowers. Once established, all commonly grown hydrangea species are cold hardy in this temperature range. The panicle hydrangea can tolerate cold zones better than all the others, according to Ohio State University. 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