Some sources say there are 23 species of hydrangea, others claim there are 49 and still others say there are as many as 80!However many there are, only six types are commonly grown in American gardens. Provide winter protection in zone 5, as flowers are produced on old wood. 'Unique' is a particularly hardy panicle hydrangea that adapts well to training as a tree form. If bacterial or viral diseases strike, the affected plant parts should be removed and destroyed. The flowers on Panicle Hydrangeas typically start off green, changing to white, then fading to pink. With over 70 species in their genus and over 600 cultivars, the variety in Hydrangeas is enormous. Because the plants bloom on old wood, panicle hydrangeas like 'Gatsby Pink' require a garden in zone 5 or warmer to prevent winter damage that affects future growth. As well as being beautiful, these flowers give off a very pleasant scent. For added interest, look for the variegated climbing hydrangea 'Miranda' (H. petiolaris subsp. Kyushu bears these flowers from late summer into early fall. Hydrangea serrata 'Blue Deckle' is a dwarf lacecap type that will thrive in the dappled sunlight of tall deciduous trees in zone 6 and warmer gardens. If your Bigleaf Hydrangeas have struggled to flower due to the climate or particularly tough winters, this is a good alternative Hydrangea. This variety can reach 4 - 6 feet in height and can spread up to 8 feet. It is available in both single-flower form and double-flower form, where petals appear to be layered. The flowers are white when the plant first bears them but later turn pinkish-purple with age. This is a cultivar of H. macrophylla, which is also known as bigleaf hydrangea. This is the most common Hydrangea sold in garden centers and seen in home gardens. It needs shelter from the wind, so planting it near the side of a house or close to a fence may be a good idea. Even in short periods of soggy soil, this plant will develop root rot, so be wary of overwatering. All Hydrangea Varieties Hydrangeas offer varied and extravagant blooms throughout summer and into fall, when many shrubs have completed their show. Their flowers can be purple, blue, or pink, and they thrive in hardiness zone 6. While most hydrangeas do best in shade, varieties of Hydrangea paniculata prefer sunny spots. As the flowers reach fall and have aged, they move on from pink to a red and then, deep burgundy color. For more details, see our, Limelight Hydrangea (Hydrangea paniculata 'Limelight'), 'Cityline Mars' Hydrangea (Hydrangea macrophylla 'CitylineMars'), 'Zinfin Doll' Hydrangea (Hydrangea paniculata 'Zinfin Doll'), 'BloomStruck' Hydrangea (Hydrangea macrophylla Endless Summer 'BloomStruck'), 'Blue Deckle' Hydrangea (Hydrangea serrata 'Blue Deckle'), 'Eldorado' Hydrangea (Hydrangea macrophylla 'Eldorado'), 'You and Me Together' Hydrangea (Hydrangea macrophylla 'You and Me Together'), 'Madame Emile Mouillere' Hydrangea (Hydrangea macrophylla 'Madame Emile Mouillere'), 'Miss Saori' Hydrangea (Hydrangea macrophylla 'Miss Saori'), 'Unique' Hydrangea (Hydrangea paniculata ‘Unique’), 12 Common Species of Magnolia Trees and Shrubs, 10 Best Shrubs That Flower in Early Summer, 14 Recommended Lily Varieties for Your Garden, 40 Species of Pines From Around the World, 15 Varieties of Roses to Consider for Your Garden, How to Prune Different Kinds of Hydrangeas, 29 Shrubs That Grow in Full or Partial Shade, 6 Varieties of Dogwood to Use In Your Landscape. Hydrangea macrophylla, colloquially referred to as bigleaf hydrangeas are the most common. Unlike most Hydrangeas, this variety is drought tolerant, making it ideal for forgetful gardeners or those who like low-maintenance plants. They typically start out as a pale green when they first bloom, then develop into a luscious creamy white color. Be wary in hot climates, as these Hydrangeas prefer to be in some shade during intense heat, so a position that allows them protection from the sun during the heat of the afternoon would be ideal. Anyone who inherits a climbing hydrangea specimen is lucky. There are bigleaf (mopheads, lacecaps), smooth, panicle, climbing, and oakleaf types to choose from. The flowers on this plant have an exceptionally long blooming period, most likely outlasting other flowers in your garden. You can prune away dead wood as new growth appears in spring, but be careful not to mistakenly cut away any flower buds, as older varieties bloom on old wood. If your garden is saturated with blue and pink, maybe it is time to spice up the landscape with a little red shrub such as the 'Eldorado' bigleaf hydrangea cultivar. The name of this plant really says it all. They require well-draining soil to help prevent root rot and like to have consistently moist soil. Once its phase of vigorous growth begins, you will need to prune it regularly to prevent it from becoming overgrown. As with most flowering plants, there will be a greater abundance of blooms if the Hydrangea is in a position of full sun, and shaded climbing Hydrangeas may suffer from a lack of flowers. The dwarf plant is the perfect addition to your patio garden. Also called French hydrangeas, florist's hydrangeas, & hortensia. Some cultivars of this Hydrangea have pink flowers, but they do not change color like some other types of Hydrangea. In containers or in the ground, few plants give gardeners the same bang for their buck as the hydrangea. The large flowers bloom in clusters spanning up to twelve inches on sturdy stems that hold the blooms in an upright position. You can also prune the plant in early spring before it begins it shows new growth. Plants flower on new wood. There are 3 different types of hydrangea macrophylla; mophead, lacecap and mountain hydrangeas. This plant is cold-hardy and can survive in temperatures as low as 5° F, making it suitable for many different climates. The Kyushu variety of hydrangea is a panicle hydrangea just like Peegee, meaning that the plant produces flower blossoms in panicles, which are cone-like clusters. Symptoms include stomach distress and sometimes bloody diarrhea. Flowers come in a vast range of sizes, shapes, and colors, with something to suit every gardeners taste and style. Though it would prefer well-draining soil, it can survive in most soil conditions and requires less moisture than you would typically expect of a Hydrangea. This variety of Hydrangea features clusters of flowers known as multiple florets, which give the look of double blooms. It can grow in full sun so long as you keep up with watering it quite heavily to maintain moist soil. Climbing Hydrangeas are also referred to as Japanese Hydrangeas and Creeping Hydrangeas. The flowers will be white in the summer, fading to a pale pink towards the end of the flowering season. Plants bloom on new wood, making this a very hardy selection in cold areas. Heavily pruning this plant risks it being unable to recover. This plant thrives in rich soil with plenty of organic matter. petiolaris 'Miranda'), which features creamy yellow leaf margins in addition to 10-inch flower heads. You can opt-out at any time. Panicle hydrangea In Japan, the correct name for the tea is ‘amacha,’ while in Korea, they call it ‘sugukcha.’. Morning sun will be tolerated by this plant, providing the soil is kept consistently moist. These are the biggest flowers of any Hydrangea and are the jewel in the crown of many gardens. But if the plant is allowed to grow in tree form, it may … It tolerates cold well and is well-suited to climates in which temperatures drop too low to grow Bigleaf Hydrangeas. The University of Texas at Austin, Wildflower Center.