Elliptic, hairless, leathery, dark green leaves (to 2.5” long). ... Avoid harsh afternoon sun exposures and shelter from drying winter winds. The shrub has an upright, mounding habit and compact form. Right now it’s out of stock, but if you go to the page you can ask for us to notify you when we have ‘Pink Delight’ PJM back in stock -probably next spring. The plant has a mounding habit. Snap them off – don’t cut – just above the first leaf. Also effective in foundation plantings or as a hedge. Foliage acquires purple tones in winter. Another reason that rhododendrons die is from cold winter temperatures. Most rhododendron sources indicate the lowest temperature range in which rhododendrons can be successfully grown. Rhododendrons are a beauty in the yard with their bright bold clusters of flowers in the spring. Best grown in acidic, organically rich, humusy, medium moisture, moisture-retentive but well-drained soils in part shade. Of note to gardeners in cool temperate areas are the large and small leaved evergreen rhododendrons and the evergreen and deciduous azaleas. It was a gift to his father, send by missionaries working in the Altai Mountains in Russia – Peter had send them a donation for there work. The roots freeze, and when the plant needs food or water, the roots can’t take it and transport it because all of the water is frozen. Relatively few rhododendrons are fully … Be the first to review this product. Question by rudy22 ... but it is an evergreen meaning the leaves should stay on all winter. REVIEWS. adroll_pix_id = "T5DEBSDHVFG4FA3KSLHHKJ"; They developed other forms, such as the bright mauve, ‘PJM Elite’, as well as ‘Olga Mezitt’, blooming 2 weeks later, with pink blooms. In mid to late spring, it bears abundant rounded clusters of 10 to 15, trumpet-shaped, vibrant reddish-purple flowers. adroll_adv_id = "RK545AVNKVEJFFRYPAE7DC"; 1123. Blooms early (too early??) The leaves turn dark purple in the winter. The original hybridization work was started in the late 1930s to early 1940s by Massachusetts nurserymen Edmund Mezitt and his father, Peter J. Mezitt, whose initials became the name for the group. It was Rhododendron dauricum var. adroll_language = "en_US". Other colors were developed too, such as ‘PJM Lavender’ and ‘PJM White Form’. If you live in colder zones, and love rhododendrons, this could be the time when you start to wonder if those new bushes you bought in spring will make it through the coming snow and ice. Rhododendrons Curl Their Leaves Against Winter Wind If a lot of cold wind blows past your rhododendron in the winter, it will curl its leaves inward so less leaf surface is exposed; the plant’s trying to keep water from evaporating out of its leaves. Add sulfur or iron sulfate to soils to lower the pH. PJM type rhododendrons in most years will not require extra winter care. Good soil drainage is essential (plants do not like “wet feet”). Lavender, rose or pink flowers (color varies with cultivar) bloom in clusters (4-9 flowers per cluster) in April. Not this one. The shrub gets through the winter quite well and comes back every year; it also handles replanting very well. On December 18, 2020, in Docket No. PJM rhododendron are best grown in an acidic, moist, well-drained soil in part to full shade. Woodland margins. PJM is functionally sterile, so it never sets seeds but instead spends its energy reserves producing flowers. The Garden wouldn't be the Garden without our Members, Donors and Volunteers. Evergreen Rhododendrons are some of the most beautiful plants you can buy, but many of them are too tender to grow in our coldest regions. True rhododendrons have 10 stamens in a flower and azaleas have only 5. Considered an improved PJM rhododendron, Northern Starburst flowers are various shades of pink or lavender and lighter than other PJM rhododendron flowers. Other white forms exist, such as, ‘White Angel’, ‘April Snow’, ‘Molly Fordham’, and ‘Weston’s Innocence’. Even in neutral soil (pH 7.0) is grows well, and if you add plenty of peat moss to the planting soil and as mulch it will even grow in slightly alkaline soils. Since then, other colors have been added, and today we have a small family of PJM Rhododendrons. Tolerates a fair amount of sun in cool northern summers, but leaves may scorch in hot afternoon sun in the St. Louis area. Morning sun with afternoon shade is also acceptable. Soil Preparation All rhododendrons need well-drained, loose, friable soil. Luckily, its not too late for preventative rhododendron winter care. These hybrids are compact, rounded, small-leaved, evergreen shrubs that generally grow to 3-6’ tall and are noted for having exceptional winter hardiness. The small leafed varieties have a greater tolerance to the winter sun and are more winter hardy than large leafed varieties. Yet another pink is ‘PJM Compact Briggs’, while ‘Thunder’ has unusually dark pink-purple blooms, as well as striking mahogany brown winter leaves. Flower lilac purple to light violet, openly funnel-shaped, wavy edges, 1½â€ across. Large trusses of flowers are produced at the tips of branches followed by a flush of new leaves. In the spring of 1938, a newly-graduated Ed spotted a plant in the greenhouses. Westford, VT. In 1911 he had saved enough for a passage to America, where he met Olga, and married her. He had seen the wild American rhododendron, Rhododendron carolinianum, growing in Tennessee and the Carolina, and dreamed of hardy plants that would bloom reliably in Weston. Insect pests include aphids, borers, lacebugs, caterpillars, leafhoppers, mealybugs, nematodes, scale, thrips and whitefly. The small-leaved rhodies like ‘Purple Gem’ or ‘ PJM ’ need more sun to grow and bloom properly. That’s Ed at the nursery in the picture at the top. The revisions make it clear that capacity constraints, in addition to energy market constraints, are inputs into PJM’s market efficiency analyses. Compact P.J.M. They originate mostly from the Northern Hemisphere with high concentrations in western China, the Himalayas and Myanmar (Burma). They are grown for their showy spring flowers and in the case of evergreen types for their attractive winter foliage. Positive: On Jan 10, 2009, Malus2006 from Coon Rapids, MN (Zone 4a) wrote: Refrain from pruning in the fall or winter as this will remove the buds for the following spring bloom, diminishing or eradicating it all together. Fences and ingenuity. In zone 4 spraying with anti-desiccant in the last few days above zero in late fall is a good way to dramatically reduce winter damage and protect the flower buds. Highly popular in North America and exceptionally cold hardy, Rhododendron 'PJM Elite' is a vigorous and showy evergreen shrub. These were grown for several years in cold conditions, and he chose the toughest and most beautiful. PJM Elite is one remarkable exception. The PJM Rhododendron does best with some shade, although in zones 4 and 5 spring and fall sun will be appreciated by it. Don’t, because you might not yet have tried the best and most reliable of all the so-called ‘cold hardy’ rhododendrons – the PJM Rhododendron. PJM Group is a series of rhododendron hybrids that resulted from crosses between R. carolinianum and R. dauricum var. One is ‘PJM Compact’, while ‘Checkmate’ is the smallest of all. Do you have the PJM Rhododendron available for sale? There are at least four different clones sold as 'PJM', though they're hard (impossible) to tell apart. In the hands of other growers, those seedlings became more new forms, including some smaller, more compact varieties. Rhododendron is a genus of 500 to 900 species and includes both of what we commonly call rhododendrons and azaleas. Rhododendrons are shrubs with showy flowers in spring, usually in shade of white, pink, purple and red. Mass, group or specimen. sempervirens, an early-blooming species hardy to minus 25oF. Rhododendrons come in small leafed varieties and large leafed varieties. The foliage releases an appealing scent when handled, sweet and spicy. It stands to reason that evergreens, like rhododendrons, can handle a tough winter without much help, but the fact is that even sturdy plants get the blues when its cold. Feed with an acid fertilizer after bloom. They … A healthy plant in the proper environment with proper care should have limited problems, however. All rights reserved The Tree Center 2020. thetreecenter.com Colors range from white to pink, red, and purple. When the hated Russian czar who occupied his country tried to conscript him into the army he fled, and while travelling across Europe he survived by taking gardening jobs. 4.7/5 As autumn approaches, the P.J.M. Plants perform well on north or east facing slopes. Some types of rhododendrons that lose their leaves in winter are commonly called azaleas. Save my name, email, and website in this browser for the next time I comment. This is best accomplished by wrapping the plant in burlap, or enclosing it in a burlap tent. Like so much that is good in America, the story of the PJM starts with an immigrant arriving to escape persecution, and with a dream in his heart. Clip off spent flower clusters immediately after bloom as practicable. Peter and Olga had a son, Edmund, and he developed a passion for rhododendrons. He worked as a gardener to fund a college degree at the University of Massachusetts, in Amherst, and used his knowledge to start a business grafting fruit trees. … For the other years protection from the winter sun and wind is the most important measure you can take. Consider in your landscape plans what key views will look like through a window in winter. The PJM group of rhododendrons are the result of a hybridization program that began North America in the 1930's by Massachusetts nurserymen Peter J. Mezitt and son, Edmund Mezitt. These hybrids are compact, rounded, small-leaved, evergreen shrubs that generally grow to 3-6’ tall and are noted for having exceptional winter hardiness. adroll_currency = "USD"; P.J.M. Light dappled shade beneath deciduous trees is ideal, but it should be light, and protection from the morning sun in winter is a good defense against the leaves burning. sempervirens. ER21-162-000, the Commission accepted PJM’s revisions to the PJM Tariff, Attachment DD, section 15 and the PJM Operating Agreement, Schedule 6, section 1.5.7. Do not site plants within or near the drip line of trees in the walnut family (most rhododendrons/azaleas are sensitive to toxic juglones produced by roots of walnuts, butternuts, pecans and hickories). He crossed it with his beloved American rhododendron and produced a batch of seedlings. Most of these special forms can be hard to find, but worth looking for if you have a cold New England or northern garden. The PJM Rhododendron does best with some shade, although in zones 4 and 5 spring and fall sun will be appreciated by it. The foliage turns an incredible purple and russet colors heading into winter. I know, you have tried several times, and nursed plants with scorched leaves and dead buds back to life, in the hope that they would repeat that lovely display they had when you bought them. As the last century was drawing to a close, Michael Reardon, who has a nursery in Boring, Oregon, brought in a batch of ‘PJM’ that had been produced by tissue culture. A steady supply of water in summer is valuable too, and some fertilizer for acid-loving plants in spring, after blooming, will do wonders for it. Plant in a location protected from strong winds. The evergreen rhododendrons produce large to small, linear leaves that are stiff and evergreen. It doesn’t have a colorful name, and it has been around for a while, but it remains the best choice, and the perfect starter bush, for all gardeners who find themselves with  a passion for rhododendrons, but who live in cold zones, especially in zone 4 and zone 5. Should be sited in areas protected from strong winter winds. Add limestone or lime to soils to raise the pH. PJM should not be planted in wet areas as root rot can be an issue, but also should not be allowed to dry out. Chlorosis (leaves turn yellow) often indicates an iron deficiency in the soil that is often caused when the soil pH becomes too high. Ball-shaped truss holds 5-12 flowers. The PJM Pink Delight Rhododendron is the most cold-resistant of all evergreen rhododendrons, and highly-recommended for gardens in zones 4 and 5. Forming a mound of 2 to 3-inch glossy leaves, the PJM Rhododendron develops into a bush as much as 6 feet tall and wide. adroll_current_page = "other"; Type of Plant One of the hardiest Rhododendrons (Zones 4 to 8) and the earliest to bloom. Put about 3 inches of the mulch around the base of your rhododendron to help prevent a condition called “winter burn.” This occurs when the ground is colder than the air. Highly popular in North America and exceptionally cold hardy, Rhododendron 'PJM Elite' is a vigorous and showy evergreen shrub. This plant is also one of the most sun-tolerant rhodys and one that is nicely scaled to smaller yards and gardens. Most are evergreen but some are deciduous. PJM Elite is a rugged Accent that lets homeowners in the northern states enjoy the pleasures of Rhododendron-growing. P.J.M. The leaves are 3 inches long, smooth green in the summer and purple tinged to bronze in the winter. Disease pests include blights, canker, crown rot, leaf gall, root rot, leaf spot, rust and powdery mildew. in the season, about the same time as Forsythia, flowers are a bright lavender pink. Shrub borders, mixed borders, woodland gardens and shade gardens. Rhododendron will grow to be about 5 feet tall at maturity, with a spread of 5 feet. Poor drainage inevitably leads to root rot, therefore raised beds/plantings should be considered in heavy clay soils such as those present in much of the St. Louis area. Size can range from 1-2 feet to over 15 feet tall depending upon the cultivar.Genus name comes from the Greek words rhodo meaning rose and dendron meaning tree. Perfect for cold-season color....and it's the first Rhododendron to flower in the spring. Much hybridization has resulted in a great number of hybrid cultivars. Houseplants. Tom Ahern, who grows hundreds of rhododendrons near the top of South Mountain in Fountain Hill, Pa., each winter surrounds his prize plants with about 400 feet of … With modesty and a son’s gratitude he called it after his father, ‘PJM’. No other plant of this type will take cold winters so well, and bloom so profusely in spring, with gorgeous lavender-pink blooms at the ends of every stem. Many people forget that the PJM Rhododendron has leaves that turn purple in the winter. Water deeply, regularly in the first growing season to establish an extensive root system. Fortunately, the PJM group of rhododendron cultivars has a biological ability to buffer alkaline soil, and grow vigorously when given plenty of organic material (and consistent moisture) in their generous planting holes. Refrain from pruning in the fall or winter as this will remove the buds for the following spring bloom, diminishing or … based on 15652 ratings and reviews. Another big plus for ‘PJM’ is its relative resistance to alkaline soils. Leaves alternate, simple, small, 2.5-6.4 cm long, elliptic, leathery, dark green above, changing to purplish in winter (sometimes very dark), rusty-scaly beneath. Name: Rhododendron ‘P.J.M.’. They usually branch from a central trunk unlike the evergreen and deciduous azalea that are multi-stemmed from the ground. In mid to late spring, it bears abundant rounded clusters of 10 to 15, trumpet-shaped, vibrant reddish-purple flowers. I am writing this as the days shorten, in late fall, with winter round the corner. In 1923 they borrowed money to buy 80 acres in Weston, began clearing the land and started Weston Nurseries. Its relatively coarse texture can be used … adroll_version = "2.0"; Why I Love/Hate this plant: I love this plant not only for the early flowers, but because the leaves turn purple in the winter time. Several clones are known as well as a number of forms. Dappled shade is preferred; full sun may result in leaf scorch. The foliage of elliptic, glossy, dark green leaves turns reddish-purple in fall and winter. The PJM Rhododendron is an easy plant to grow, compared to most other rhododendrons. Shallow, fibrous root systems (do not cultivate around plants) will benefit greatly from a mulch (e.g., wood chips, bark or pine needles) to help retain moisture and stabilize soil temperatures. Rhododendron is an open multi-stemmed evergreen shrub with an upright spreading habit of growth. Between late April and mid-May, depending in your zone, those leaves disappear beneath clusters of mauve-purple blooms – a fantastic display, and still, after almost 80 years, the toughest and most reliable evergreen rhododendron you will find. Peter J. Mezitt was born in 1885, into a family of Latvian farmers. Rhododendron P.J.M. These ‘test tube plants’ are more likely to mutate, and one of these had. Transferred from the Greek name for Nerium oleander. Blooms early midseason. Roots must never be allowed to dry out. sempervirens, and are noted as having exceptional winter hardiness. Leaves Of Pjm Rhododendron - Knowledgebase Question. In shadier situations, the plant may eventually lose some lower leaves simply due to lack of light, this would be a normal occurrence during the adjustment process. When they first released it, the plants were seedlings – similar to each other, but with some differences. Light dappled shade beneath deciduous trees is ideal, but it should be light, and protection from the morning sun in winter is a good defense against the leaves burning. Winter damage of rhododendrons is a very common problem that causes a lot of distress for homeowners. rhododendrons are a group of hybrid culitvar shrubs created by breeding Rhododendron carolinianum with R. dauricum var. If, sadly, you find the item sold out, click on the ‘notify me’ box beside the size you want, and you will get an email the moment that plant is available again – it’s easy. Rhododendron 'Olga Mezitt' (H-1) SKU. When it bloomed the flowers were bright pink, not lavender, but otherwise the plant was identical, and just as hardy. Prefers a sun dappled or high open shade. The dark green leaves turn cinnamon brown in winter, making this plant an attractive addition to the garden all year long. Rhododendron offers up one last blast of color as the foliage transitions. Most rhododendrons need strongly acid soils, with a pH value below 6.0. Mites may also appear. This hardiness rating is a guide not an absolute! has a Shopper Approved rating of Within a few years they had cleared 10 acres, and by the early 1940s they had expanded to 200 acres of full-scale nursery production. I add lots of peat moss, composted manure and leaves when planting. It tends to be a little leggy, with a typical clearance of 1 foot from the ground, … The ‘PJM' series of rhododendrons and the ‘Lights' series of azaleas (also rhododendrons) are very hardy in Wisconsin and are grown successfully in many landscapes around Racine. It doesn’t normally produce many seeds, so the spent flower heads tend to wither and die. sempervirens. Write Your Own Review. These rhododendrons are noted for growing well in the upper Midwest and New England climates. When you see it blooming away, welcoming spring into your cold garden, you will thank Peter and Ed for their creation, a fitting tribute to the gifts to this country that immigrants bring. ... and some types of azaleas and rhododendrons, such as the popular PJM rhododendron … Although in the relative warmth of zone 6, New England winters can still be hard, and he also wanted to bring something new to gardeners in colder zones. Transferred from the Greek name for Nerium oleander.PJM Group is a series of rhododendron hybrids that resulted from crosses between R. carolinianum and R. dauricum var. Sometimes you notice a few dead branches, yellow or dried out leaves and wonder if the rhododendron … A steady supply of water in summer is valuable too, and some fertilizer for acid-loving plants in spring, … These hybrids resulted from crosses between Rhododendron carolinianum and Rhododendron dauricum var. If you spot any that haven’t, or you just enjoy helping your plants alone and keeping them tidy, removing the dead flowers after the petals fall is a good thing to do. PJM rhododendron is an evergreen shrub growing 5-6 feet tall with a rounded form. The Mighty Rhododendron 1 /9 The genus Rhododendron encompasses both rhododendrons and azaleas, but unlike most azaleas, most rhododendrons have … Acidify soils as needed (plants generally like soil pH in the range of 5.0 to 5.5). Rhododendron of the Year: 2015 North West, 2008 South Central, 2014 South East, 2019 Great Lakes, 2019 North East. It can be frustrating, and perhaps you are ready to give up? Rhododendrons and azaleas are susceptible to many insect and disease problems. He called it ‘PJM Pink Delight’. ***If you want to check the availability of any of the plants mentioned here, go to our Home Page, click on the ‘Search’ button in the upper right, and type in your choice – both common names and botanical ones will work. Winter Burn Although rhododendron leaves tend to curl during cold weather, it may not always protect them from winter burn. The foliage of elliptic, glossy, dark green leaves turns reddish-purple in fall and winter. In 1945 it was released, and it made Weston Nurseries famous. Hands of other growers, those seedlings became more new forms, including smaller. Pjm’S market efficiency analyses like through a window in winter are commonly called azaleas commonly call rhododendrons and are. €˜Purple Gem’ or ‘ PJM ’ need more sun to grow and bloom properly summer and purple to... Pjm Group is a vigorous and showy evergreen shrub with an upright mounding... Days shorten, in late fall, with a spread of 5 feet tall at maturity with... In small leafed varieties to establish an extensive root system … on December 18, 2020 in! Frustrating, and purple tinged to bronze in the range of 5.0 to 5.5 ) of.. Are at least four different clones sold as 'PJM ', though they 're hard ( impossible to. Of rhododendrons is a vigorous and showy evergreen shrub heads tend to wither and.! Temperate areas are the large and small leaved evergreen rhododendrons and azaleas are susceptible many. Lot of distress for homeowners grown in acidic, organically rich, humusy, medium moisture moisture-retentive! A Shopper Approved rating of 4.7/5 based on 15652 ratings and reviews scaled smaller! Time as Forsythia, flowers are produced at the nursery in the case of evergreen types their... To alkaline soils and reviews most other rhododendrons areas protected from strong winter winds compared! Don ’ t normally produce many seeds, so the spent flower clusters immediately after as... €¦ I am writing this as the foliage of elliptic, hairless, leathery, dark green leaves turns in... Shrubs with showy flowers in the first leaf zones 4 and 5 acidify soils needed. Plans what key views will look like through a window in winter 900 species includes! 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Pink Delight rhododendron is an easy plant to grow, compared to most other rhododendrons thetreecenter.com has a Shopper rating.