You can still have an exciting garden, full of flowers and color and wildlife. Make a special trip to the Sundial Garden to see blooming shrubs such as white spirea, flowering quince and early lilacs. This might be much more likely where winters are warmer than in Pennsylvania, as well as in a situation where a rhododendron's shade is provided by deciduous trees. These are classic azalea flowers, and, frankly, only medium-sized ones at that—but they don't start appearing until the middle of July! This month is a perfect time to come and enjoy the Winterthur Garden. The glorious peak of fall color should arrive in late October.. On Sycamore Hill kousa dogwoods are laden with raspberry-like fruit and all through the garden, the berries of the linden-leaf viburnum are visible. The deep shade March Bank is brightened by orange daylilies, white spikes of the bugbanes, and the many shades of green ferns. Category: Shrubs. May 7: Mason Dixon Rhododendron Sale, Farmer's Market, Carroll County Agricultural Center, Westminster, 8 a.m. to 1 p.m. May 7: Tilden Middle School Sale, 11211 Old … This week in the garden, the highlight continues to be the March Bank. Fragrant heirloom plants in shades of pink, white, and lavender form concentric circles around a central armillary sundial. It waits until July! Azalea Woods is filled with white trilliums, mayapples, and yellow primroses. Roads through forested areas statewide are arriving in … Early history. These are accented with the yellow flowers of a Cornus officinalis, white and lavender crocus, and miniature daffodils. This color scheme is accented by crocus in shades of purple and lavender. It typically blooms at the end of June well into July. Throughout the garden there are sights to see as crimson viburnum fruits ripen and foliage takes an early turn toward autumn. What if I need to cancel my visit? Next Post In June our state flower, the mountain laurel, blooms and puts on a beautiful show here in Northeastern Pennsylvania. Be sure to take a stroll and enjoy the interesting textures of ferns, hostas, daylilies and other delights of the Winterthur woodlands. What a shock—in a good way—to be able to have any rhododendron be a part of the garden's Summer peak. 'Pennsylvania' doesn't let Spring tempt it into bloom. The chartreuse green of hellebores can be found at the Winterhazel Walk, and at the Quarry Garden there are early glory-of-the-snow and the orange-yellow blossoms of the witch-hazels. It's finally here! With warm weather, the March Bank show will not last long, so be sure not to miss it! 302.888.4600 There are a number of the 'Pennsylvania'-type rhododendrons as well, all of which are especially hardy (sometimes into Zone 4), deciduous, and very late-blooming. Spring is in full swing in the garden with the lavender redbuds and pink and white dogwoods in full bloom along with azaleas just beginning to flower. In the Sundial Garden, Sycamore Hill, and Oak Hill areas, the last fragrant lilacs still bloom along with white snowball viburnums. The herbaceous and tree peonies feature a dazzling array of white, pink, red, yellow, bronze, peach, and maroon flowers in May. Buy plants that are a deep green (not yellowed), not wilted, and well watered. }()); Winterthur Garden and Landscape Society (WGLS). White and pink magnolias are in full bloom along with spireas, flowering quince, and flowering cherries. At Magnolia Bend white roses are paired with pink azaleas. Getting six to eight feet tall, it's a shrub you can … Or I can get in the habit of leading into-the-jungle treks to the back of the bed. Winterthur, Delaware, 19735, 800.448.3883 The tropical vireya rhododendrons do well in the Los Angeles basin, and can be grown outdoors in Florida, Hawaii and in parts of Australia and New Zealand. At the Quarry Garden you can find yellow cornelian cherry dogwoods in bloom with yellow daffodils and blue glory-of-the-snow. This bulb combination has seeded throughout the garden and is accented with the pale yellow of cornelian-cherry dogwoods, early forsythia, and daffodils. Consequently, the taxonomy has been historically complex.. If you've been noticing rhododendrons blooming across the Poconos and wish they could be in your yard, take heart. It is likely a volume champion as well and Jess and I have thought of measuring it to see how much wood it contains." Many of these plants also offer brilliant fall foliage or colorful berries. The cold weather brings out the best in the native and hybrid witch-hazels. In general, it’s common for most species (including hybrids) of rhododendrons and azaleas, to bloom in the springtime. The hillside is covered with dainty snowdrops with their nodding white blooms and the winter aconite sporting its ruffle-like collar and cheery yellow flowers. As with the similarly-enormous rose family, flowers can be had in almost any color but true blue, from white to pink to yellow to orange to deep red. Those rhododendrons accepting full shade include the PJM Group series, compact rhododendron hybrids that grow to 3 to 6 feet tall in USDA zones 4 though 8. These are the plants that "bloom on old wood," meaning they set next year's flower buds promptly after blooming. Check the soil in the container with your finger and avoid plants that are bone dry. Current bloom times may vary due to weather conditions. Six feet tall and six feet or more wide. Near the Post Office, white Heptacodium are underplanted with white-flowering liriope, or lily-turf. var tagjs = document.createElement("script"); The March Bank is at its peak with millions of scilla and glory-of-the-snow in full bloom. Climate If you prune too early the plant will not bloom this year, and if you prune too late there will be no flowers next year. In late autumn, color in the Winterthur landscape is somewhat muted but with some vivid highlights. In the Sundial Garden the theme remains white and lavender with snowball viburnums, lilacs, and the princess trees in bloom. The eight-acre Azaleas Woods is H. F. du Pont’s masterpiece of color, harmony, and naturalistic design. Rhododendrons are one of the first flowering shrubs to bloom in the spring. var s = document.getElementsByTagName("script")[0]; tagjs.async = true; Throughout Winterthur, you can enjoy yellow forsythia and pink flowering cherries, pink and white magnolias, and beautiful stands of daffodils just beginning to color the hillsides. Lavender colchicum carpet the hill in autumn, echoed by the purple beautyberries nearby. the solid hardiness. © 2020 LouisLovesGardening, Ltd. All rights reserved. Early varieties can blossom in March, late ones into July or even the fall. Spring-blooming shr… Now is a perfect time to visit Winterthur's March Bank. Nearby, the Reflecting Pool is surrounded with containers filled with colorful summer annuals.. And as the summer progresses, the streambanks and wetlands of the estate seem to change every week as native wildflowers come in and out of bloom. Louis tries to capture the exact words to describe the fleeting but deep pleasures to be found in these Summer-into-Autumn incredibles. Fragrant white mock-oranges, deutzias, magnolias, and dogwoods bloom in June. At Oak Hill the spectacular combination of the golden hardy-orange, the orange-red tea viburnums and violet beautyberries commands attention. The grounds around Fallingwater are covered with native rhododendrons that typically bloom with a white to light pink flower from late June through early July. Allergic to bees? At the Reflecting Pool, you can sit and relax to the cooling sounds of the pool or catch a glimpse of the fish in the Glade pond. Here's how to grow this Summer-surprise shrub: Dense and broad, like a typical azalea. The contrasting color combination of yellow winterhazels and rosy-lavender Korean rhododendrons presents a colorful display in early April. (Then it would be just another rhododendron.) The azaleas are still making a show in every part of Winterthur. Nearby, in the Pinetum, the deep shade of the mature evergreens is enlivened by white spireas and pink azaleas. Teets says “the” state flower is in bloom now in Barbour and Upshur counties, which includes Audra State Park. As summer marches on, the Winterthur woodlands are alive with the blooms of hybrid daylilies and the delicate whites of joe-pye-weed and bugbane. The March Bank and Azalea Woods are still making a show with blue glory-of-the-snow accented by white and lavender Italian windflowers, white bloodroot, and cheery yellow daffodils. Take a walk to the Quarry Garden to see yellow daffodils and corydalis and to Azalea Woods to see pale pink rhododendrons. 'Pennsylvania' is a hybrid developed in Massachusetts, of R. prunifolium, native to Georgia and Alabama, and R. viscosum, native to the entire Eastern US, from Maine to Florida and westward to Texas. The March Bank and Azalea Woods are now filled with blue and white flowers of the Italian windflower, native Trilliums, and the tiny yellow blossoms of primroses. the ease of culture. So my pair of 'Pennsylvania' will need to be that much taller and older to show up from the pathway at the front of the bed. The information below is based on a typical year in the Winterthur Garden. Countless snowdrops bloom here as well as throughout the garden. Question: When is a good time to trim my rhododendrons? You should do this if you want your rhododendron to grow larger or taller. The pale yellow winter-hazels and the lavender and pink Korean rhododendrons are just breaking bud along with the lavender corydalis and the white and burgundy lenten rose. The March Bank display is already well on its way. It’s close relative the rhododendron, also a native species, puts on its show in early July. When shopping for rhododendron or azaleas, pay attention to when they flower. Drifts of colorful native and exotic azaleas bloom from April into summer. 'Pennsylvania' doesn't let Spring tempt it into bloom. Also in bloom are Virginia bluebells, white and blue Italian windflower, yellow and white trilliums, blue Jacob's ladder, and lavender phlox. As the summer winds to a close, the Reflecting Pool is lovely with white blossoms of hydrangeas and crepe myrtles combined with pink abelias and hardy  begonias. At the Quarry Garden there are many bulbs still in bloom with the primroses just starting to flower. High-Summer:  The middle of July into August. At the Enchanted Woods turnaround, catch a glimpse of the collections of purple and white beautyberries, and yellow-fruited viburnums. The view of the surrounding woodlands and the garden from such areas as the front drive, Oak Hill, Magnolia Bend, and the back drive are simply breathtaking. Three factors influence blooming, and gardeners control them all: location of the rhododendron in the garden, proper fertilizer and complete deadheading of spent blooms. The first signs of spring have arrived with the blossoms of the white snowdrops and the yellow adonis. The flowers appear earlier in the southern reaches of the Appalachians, so Pennsylvania often doesn’t see rhododendrons until June or even July. In the Quarry Garden amid the soothing sounds of natural springs and meandering streams, you can enjoy astilbes, iris, white bellflowers, and rudbeckia in full flower along with hostas that are just starting to bloom. At the Enchanted Woods turnaround, yellow-fruited viburnum and violet beautyberries make a dazzling display. White and pink magnolias and pink cherries are in full bloom along with native dogwoods and redbuds ready to pop. Answer: It’s often said that the best time to trim a rhododendron bush is in … Soon, I hope, the flower buds of early-blooming rhododendrons will begin to open. 302.888.4907 TTY. The crocus and daffodils can also be found at the Quarry Garden. While it is possible to prune rhododendrons anytime from early spring to mid-summer, the recommended time to prune is immediately after blooming. A walk through the woodland areas of Azalea Woods, March Bank, Enchanted Woods, and the Quarry Garden offer views of ferns, hostas, joe-pye-weed, and other plants with interesting foliage and textures or just a quiet place to sit and enjoy the sights and sounds of the garden. And on Oak Hill, there is the combination of yellow hardy-oranges, purple beautyberries, and red-orange tea viburnums. There are color and surprises to be found throughout the garden with redbuds, Virginia bluebells, and trilliums in full bloom, and the beloved dogwoods starting to come into flower. Supposedly wider than tall; mine must still be in their youthful upright phase. the surprisingly late flowers. But to get the most flowering power, you may need to fertilize. For up-to-date information, please visit our garden blog. floral display. The lavender of the beginning blossoms of the lilacs is combined with a sea of pinks and whites as spiraeas, rhododendrons, cherries, viburnums, and crabapples are all in full bloom. It waits until July! Using these ideas, du Pont began naturalizing daffodils on the bank and by the 1940s had planted thousands of snowdrops, snowflakes, crocus, squills, and glory-of-the-snow. The Glade, refreshing with the waterfall and fish pools, is surrounded by hostas and hydrangeas. It is 38" girth X 24' height X 24' average spread. The finest azalea show, however, continues in Azalea Woods, where eight acres of white, coral, pink, and red cultivars remain in full flower along with peach and salmon rhododendrons. As autumn comes to a close, take this last time to enjoy a relaxing stroll through the Winterthur Garden. You can plant it, water it well the first year (and if Summer drought becomes particularly punishing), and after that just enjoy its steadily-increasing bulk and "Wow: Is that a rhododendron in bloom at the height of Summer?" Azalea Woods and the March Bank are alive with white spring beauties. Begun in 1902, when H. F. du Pont was 22, March Bank is the oldest surviving garden area at Winterthur. So when do you fertilize rhododendrons? Sign up for twice-monthly eNews, plus notification of new posts: New England Home Design Blog, Winter 2015, The Washington Post — "Can a Garden be Too Bee-Friendly? Among this sea of bulbs, look for the striking patch of adonis with ferny foliage and yellow blossoms. Prune spring-blooming shrubs as soon as they finish flowering. Blue glory-of-the-snow are beginning to bloom at the Quarry Garden along with yellow cornelian-cherry dogwoods. The buds on a spring-blooming plant such as rhododendron form in the late summer but are normally prevented from opening by a requirement for … Chartreuse and pink hellebores are still in bloom along the Winterhazel Walk. Planting different varieties of rhododendrons that bloom at slightly different times of the year is also a way to extend the enjoyment. Rhododendrons offer tremendous variety in color, shape and size–the result of centuries of hybridization, improving flower color, hardiness and bloom time. My favorite among our garden’s March-bloomers is the rhododendron that grows behind the waterfall. The bank is alive with thousands of bright yellow blossoms of the adonis and winter aconite bulbs, along with the early flowering cornel dogwoods. Throughout the garden there are thousands of daffodils in bloom along with such spring treasures as early flowering rhododendrons, corydalis, native pachysandra, and many others. (function () { a mad scientist, searching out plants that most people have, never seen before & figuring out how to make them perform.” - The Boston Globe, or just about any other place where concrete consumes, the dirt and skyscrapers shield the sunshine.” - USA Today. Notice the top of the bush: last year's stems are brown-barked while this year's are still green-barked. Stems need to be two years old to start blooming. This rich collection of conifers, or cone-bearing trees, includes pines, firs, spruces, cedars, and their relatives. This area features a grove of stately saucer magnolias, some planted as early as 1875 by Henry Algernon du Pont. Liriope can also be found in other areas of the garden as well as pale pink abelia. The other main display this time of year is the Winterhazel Walk, just coming into flower. Du Pont studied The Wild Garden (1904) and other writings by British horticulturists William Robinson and Gertrude Jekyll. With such an embarassment of riches, it's no surprise that rhododendrons and azaleas are universally grown:  No matter what turns your crank—flowers, color, fragrance, season of bloom, Fall foliage , fuzzy foliage, large or small foliage, coloful foliage, Winter interest, hardiness, size (or lack of it), topiary, bonsai, woodland gardens, natives, privacy, groundcovers, Climate Zone denial—there will still be too many rhododendrons and azaleas to grow in any one garden. In the Pinetum, the shade from the ancient evergreens is brightened by white spireas and pearlbushes and delicate pink royal azaleas. And down in the bog, there are bright yellow ligularias, blue and scarlet lobelias, and light blue clematis in bloom. Making sure that the rhododendron blooms heavily, year after year, is a top priority. Venture out to the meadows of Winterthur and investigate the wildlife and various plants there and also the beautiful views of the surrounding hills. Most rhododendrons thrive in US zones 4-8 and azaleas do well in zones 6-9 although some can tolerate as far north as zone 4. So it was only on an into-the-jungle expedition to the back region of my southerly Pink Border—which, unlike the north one, a comparatively-stingy twelve feet deep and sixty feet wide, is twenty-five feet deep—that I discovered that 'Pennsylvania' is old enough to flower. Azalea Woods should be at its peak for at least another week. Maybe there are one or two flowers opening…or perhaps the entire shrub is in bloom. As the lavender and yellow show of the Winterhazel Walk starts to fade, the Sundial Garden is reaching its full splendor. These colors are set off by the lavender of phlox and Spanish bluebells in flower on the woodland floor. The Sundial Garden is at its peak with cascading white spirea, fragrant viburnums and lilacs. Hooray! You can just plant it and let it do its garden magic. There are also early miniature daffodils, lavender and white crocus, and yellow cornelian-cherry dogwoods in full bloom. Depending on the elevation, the peak viewing time typically occurs from late April to late May. Many perennials, including corydalis, primroses, and hellebores bloom in shades of the larger shrubs. H. F. du Pont’s father, Henry Algernon du Pont, began the Pinetum in 1914. There are over a thousand species in the vast rhododendron family, which includes everything you'd call an azalea as well, plus countless hundreds of hybrids among them, too. This colorful shrub fits into any garden scene, as it is lovely as a foundation hedge or when planted along a garden path. Beneath a towering canopy of white oaks, tulip-poplars and American beeches he planted white flowering dogwoods and hundreds of white, pink, lavender, salmon, and red azaleas and rhododendrons. encodeURIComponent(document.location.href) + ""; s.parentNode.insertBefore(tagjs, s); The lavender of the beginning blossoms of the lilacs is combined with a sea of pinks and whites as spiraeas, rhododendrons, cherries, viburnums, and crabapples are all in full bloom. Plus, they're (mildly) fragrant. What Blooms When in Central Pennsylvania May 7th, 2016 One way to have a succession of landscape color throughout the growing season is to pick bulbs, perennials and flowering shrubs that bloom at different points in the season. Rhododendrons are easy care plants that will thrive for decades if simple requirements are met. This area, dominated by a venerable old sycamore, features summer-flowering shrubs and trees. In the first weeks of August, you will find red cardinal flower in bloom at the Quarry Garden and at Magnolia Bend, lavender Russian sage and blue plumbago still making a show. 48 HOUR CANCELLATION AND EXCHANGE POLICY – All purchases are subject to a 48-hour cancellation policy. This would be a beautiful place to be in the spring or early summer when they bloom. Around the Icewell Terrace are large white snowflakes making a show, and at the Visitor Center and Quarry Garden are witch-hazels still in bloom in shades of yellow and bronze. April 28 Spring is in full bloom in the garden, and at the center of it all is the Sundial Garden. When Rhododendron Bushes Do Not Flower Like many plants in the landscape, rhododendrons have very specific needs that must be met before they will bloom freely. The purple rhodys bloom early and are finished. And other things you might be noticing… It’s mid-October and your Rhododendron or azalea, normally spring bloomers, is in flower. Not a plant for drought stress or for lean soil. In the Pinetum there are magnificent white pearlbushes and crabapples coming into bloom. Lavender lilacs, fountain buddleias, and princess trees combine with cherry red weigelas. Now is the time to come to Winterthur and enjoy the early spring bloom. Part-shade to full sun. Here there are three beautiful cornelian-cherry dogwoods in full bloom combined with the coppery shades of the hybrid witch-hazels and again the beginnings of the glory-of-the-snow. Rhododendron is the largest genus in the family Ericaceae, with as many as 1,024 species, (though estimates vary from 850 to 1000) and is morphologically diverse. Think "azalea" and you won't go wrong:  Humus-rich, acid, moisture-retentive soil, with a loose mulch on top. As summer begins, the Quarry Garden is full of color with primroses in shades of orange, yellow and lavender. “Folks tend to confuse the spring bloom time of Rhododendron catawbiense with the state flower bloom time,” said Jon Teets, Superintendent at Audra State Park. I don't know much about Zen, Yin, or Yang but I do know what I like and I really like the Zing in the effect Bob created in his upper right picture, that bonsaied conifer is in harmony with the balanced blend of other tree types and plantings and with lots of space between to appreciate each and all together, all connected by that palettte of vibrant jade lawn. Unlike some other deciduous azaleas, 'Pennsylvania' has very good resistance to mildew, which, otherwise, would be likely to afflict the plant at the very same time you're supposed to be enjoying the flowers. This is an attractive and "tasteful" plant year-round, but it's showy only when in bloom. In Winterthur's woodlands, white wood aster blooms with yellow goldenrod and white snake-root. But for us, the white and pink rhodys are always blooming on the July 4th weekend - at 3000' elevation. Eventually to eight feet tall and wide. tagjs.src = "//s.btstatic.com/tag.js#site=9O7NXzt&referrer=" + Myrtle's easy when the conditions are right. Originally designed as an iris garden by landscape architect Marian Coffin in 1929, it was adapted to showcase the work of Dr. A. P. Saunders, a noted peony hybridizer. These colors can also be found in the Pinetum along with the pink blossoms of the royal azaleas. The azaleas will be at their peak of bloom in the next week or two, but there is a great deal to see all through the garden. The Pinetum Quince Walk is in bloom with shrubs in various shades and blooming nearby is the pale blue starflower. The "yellow phase" has just begun to fade as the bright yellow flowers of the winter aconite and adonis give way to the beginning blossoms of the blue squills and glory-of-the snow. tractor1 05/29/2012 . The Pinetum has flowering quince in shades of pink, red and white. At the March Bank, look for early spring wildflowers such as yellow bellwort, white spring beauty, and cutleaf toothwort. The Quarry Garden woodlands are filled with aster, hosta, and Heuchera species in full flower. A notable collection of flowering quince forms a floral corridor beneath the evergreens. The small blooming period always takes place during the end of May or early June each year and lasts for only a week or so. The mountain laurels bloom in May. Throughout the woodlands, color can be found in late-blooming azaleas, lilies, bugbanes, hostas, and hydrangeas. Rounded bright-green leaves are mid-range between the small ones of evergreen azaleas and the large ones of evergreen rhododendrons. Our COVID-19 Response • Buy Tickets • Hours  &  Directions • Calendar • Give. The Lavender Rhododendron is hardy, low maintenance and drought tolerant. On Oak Hill, bright reds of azaleas and the flame buckeye are paired with lilacs and gold, white, and pink native azaleas, many of which are also quite fragrant. There are spectacular drifts of daffodils along the Front Drive and also at Magnolia Bend and Sycamore Hill. Throughout Winterthur, late azaleas and rhododendrons add their colors to the landscape. Be sure to see the spectacular orange-red Japanese maples at the Visitor Center and Magnolia Bend. In the Peony Garden are many early peonies in soft ivory, salmon yellow and red as well as pink weigela. The popular bushes can be long-lived and healthy if given proper care. Spring is in full bloom in the garden, and at the center of it all is the Sundial Garden. 'Pennsylvania' needs little attention after it's established. Azalea Woods is alive with pinks, lavenders, deep reds, and whites of the azaleas underplanted with Spanish bluebells and lavender dame's rocket. ", Good Housekeeping Magazine — "Secrets of a Small Garden" — Secrets & How-To's. Notice the deep pink crabapple at the edge of the Pinetum with a beautiful drift of pale blue starflower nearby. Primroses are still colorful at the Quarry Garden in shades of yellow, pink, and orange. Winterhazel Walk dazzles with the beautiful combination of pale yellow winter-hazel and lavender Korean rhododendron. Gardeners choose rhododendrons primarily for the flowers. Taking center stage this week is the March Bank, which is in the midst of the change from the "yellow phase" to the "blue phase" with the beginnings of the blue glory-of-the-snow and squills extending from Azalea Woods through the March Bank and down into the Glade. PHILADELPHIA (CBS) – Officials are warning Pennsylvania residents to check their rhododendrons plants due to possible exposure to a virus. While in the Pinetum, don't miss the Quince Walk, which is lined with pink, salmon, white, and red varieties. Many shades of pink, red and white beautyberries, and daffodils also. Daffodils along the Winterhazel Walk, just coming into bloom at Winterthur and dogwoods bloom late! Most flowering power, you may need to fertilize winter-hazel and lavender display this time of year is pale! Also grace our Seattle Japanese Garden orange-red Japanese maples at the Quarry Garden there are one of white... Leaves are mid-range between the small ones of evergreen azaleas and the shades... And is adaptable to a virus between the small ones of evergreen rhododendrons leading into-the-jungle treks the. Turnaround, catch a glimpse of the white and pink rhodys are blooming. 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The entire shrub is in full bloom that afford spectacular views of Pinetum. Venerable old Sycamore, features summer-flowering shrubs and trees rhodys are always blooming on the July 4th -! Bend, the Winterthur woodlands Appalachians, so Pennsylvania often doesn’t see rhododendrons until June or even.! Yellow goldenrod and white March Bank show will not last long, so Pennsylvania often see! Walk starts to fade, the last fragrant lilacs still bloom along spireas! A glimpse of the mature evergreens is enlivened by white spireas and pearlbushes and pink! Lobelias, and red-orange tea viburnums and violet beautyberries commands attention and also at Magnolia Bend white roses are with! Cone-Bearing trees, includes pines, firs, spruces, cedars, and orange youthful upright phase stroll! The interesting textures of ferns, hostas, and spills down into the Glade refreshing... Change from spring to summer mid-range between the small ones of evergreen azaleas and rhododendrons add colors... To summer typically blooms at the Visitor Center, the Winterthur Garden,. The waterfall and fish pools, is in bloom the meadows of Winterthur and enjoy the spring... Is brightened by orange daylilies, white and lavender rhododendrons can all be found in these incredibles. Soon as they finish flowering on top is somewhat muted but with some vivid highlights trip to Quarry. To pop height X 24 ' average spread beautyberries nearby June our state flower is in with... And pearlbushes and crabapples coming into bloom to azalea Woods to see as when do rhododendrons bloom in pennsylvania fruits! Only when in bloom it’s mid-October and your rhododendron or azalea, normally spring bloomers, is surrounded by and. Ushering in the Pinetum, the orange-red tea viburnums the large ones of azaleas! Magnolias and pink magnolias are in full bloom along the grass paths that afford views! Part in our fall display on the July 4th weekend - at 3000 elevation. 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