USDA Zone? The plants are hardy to Zone 3, and it can grow 4-5 feet tall and 3-5 feet wide. Hydrangeas are woody shrubs with bright beautiful heads of flowers. Poliuszko / Getty Images Green flowers are the little black dresses of the gardening world: they flatter all situations. 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. 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. Hydrangea paniculata 'ILVOBO' PP #22,782; CPBR #4910. In fall, they blush a soft pink before turning brown for winter. 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. Always above -10 degrees F – Protect Hydrangea aspera and certain selections of Hydrangea macrophylla. First, consider how much sunlight it needs. The plant is hardy to Zone 4. '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. This extra-hardy hydrangea thrives in Zones 3-9 in part shade. Be the first to review this product. These cold-hardy, drought-tolerant hydrangeas are exceptionally low-maintenance and yield gorgeous blossoms perfect for cutting and drying. 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). Blooms Large white flowers in summer to fall Light Full sun Size 3 to 4 ft. tall and wide Hardiness Cold hardy USDA zones 3 to 9 It’s covered all summer long with loads of the large white flowers you see in the photo, on stiff stems. The panicle hydrangea can tolerate cold zones better than all the others, according to Ohio State University. The chartreuse flowers of 'Limelight' hydrangeas age to a mellow pink as the season progresses. 'Annabelle' is an old-school standby, while 'Incrediball' is less prone to flop. While it can take cold temps, it is not very drought tolerant, especially if it's in a spot that gets afternoon sun. The most common type of hydrangea is a Bigleaf, or French hydrangea (Hydrangea macrophylla). Hydrangeas have been a fixture of the garden since the concept of gardening was invented, and for good reason. SKU. While they are hardy plants they are very sensitive to loss of moisture. Bobo® Hardy Hydrangea. To prevent problems in the winter, choosing the right type of hydrangea is essential. 8095. 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. This is our collection of everything and anything you could want or need to know about hydrangeas. It produces huge, symmetrical blooms up to 8 inches in diameter in June and July. Consider compact hydrangea Bobo. These amazing plant provide beautiful flowers across much of North America, making them a staple anywhere beauty is appreciated. 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. 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