Luckily, its not too late for preventative rhododendron winter care. Add limestone or lime to soils to raise the pH. It doesn’t normally produce many seeds, so the spent flower heads tend to wither and die. 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. 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. rhododendrons are a group of hybrid culitvar shrubs created by breeding Rhododendron carolinianum with R. dauricum var. Rhododendrons come in small leafed varieties and large leafed varieties. Other colors were developed too, such as ‘PJM Lavender’ and ‘PJM White Form’. Do you have the PJM Rhododendron available for sale? 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. 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. The foliage releases an appealing scent when handled, sweet and spicy. 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. Foliage acquires purple tones in winter. Rhododendrons and azaleas are susceptible to many insect and disease problems. The leaves turn dark purple in the winter. Roots must never be allowed to dry out. Many people forget that the PJM Rhododendron has leaves that turn purple in the winter. Be the first to review this product. Plant in a location protected from strong winds. The PJM Pink Delight Rhododendron is the most cold-resistant of all evergreen rhododendrons, and highly-recommended for gardens in zones 4 and 5. Tolerates a fair amount of sun in cool northern summers, but leaves may scorch in hot afternoon sun in the St. Louis area. These hybrids resulted from crosses between Rhododendron carolinianum and Rhododendron dauricum var. The plant has a mounding habit. They are grown for their showy spring flowers and in the case of evergreen types for their attractive winter foliage. On December 18, 2020, in Docket No. sempervirens, and are noted as having exceptional winter hardiness. Positive: On Jan 10, 2009, Malus2006 from Coon Rapids, MN (Zone 4a) wrote: The shrub has an upright, mounding habit and compact form. This plant is also one of the most sun-tolerant rhodys and one that is nicely scaled to smaller yards and gardens. Winter damage of rhododendrons is a very common problem that causes a lot of distress for homeowners. Soil Preparation All rhododendrons need well-drained, loose, friable soil. Snap them off – don’t cut – just above the first leaf. Most are evergreen but some are deciduous. Blooms early (too early??) â¦ 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. 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. PJM rhododendron are best grown in an acidic, moist, well-drained soil in part to full shade. Much hybridization has resulted in a great number of hybrid cultivars. 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 â¦ When it bloomed the flowers were bright pink, not lavender, but otherwise the plant was identical, and just as hardy. In 1911 he had saved enough for a passage to America, where he met Olga, and married her. Several clones are known as well as a number of forms. Save my name, email, and website in this browser for the next time I comment. adroll_language = "en_US". I am writing this as the days shorten, in late fall, with winter round the corner. These hybrids are compact, rounded, small-leaved, evergreen shrubs that generally grow to 3-6â tall and are noted for having exceptional winter hardiness. The roots freeze, and when the plant needs food or water, the roots canât take it and transport it because all of the water is frozen. Put about 3 inches of the mulch around the base of your rhododendron to help prevent a condition called âwinter burn.â This occurs when the ground is colder than the air. Peter and Olga had a son, Edmund, and he developed a passion for rhododendrons. It was Rhododendron dauricum var. PJM Elite is a rugged Accent that lets homeowners in the northern states enjoy the pleasures of Rhododendron-growing. Rhododendron 'Olga Mezitt' (H-1) SKU. Houseplants. 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. 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. Highly popular in North America and exceptionally cold hardy, Rhododendron 'PJM Elite' is a vigorous and showy evergreen shrub. The leaves are 3 inches long, smooth green in the summer and purple tinged to bronze in the winter. Consider in your landscape plans what key views will look like through a window in winter. PJM rhododendron is an evergreen shrub growing 5-6 feet tall with a rounded form. Compact P.J.M. Water deeply, regularly in the first growing season to establish an extensive root system. 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. The shrub gets through the winter quite well and comes back every year; it also handles replanting very well. The âPJM' series of rhododendrons and the âLights' series of azaleas (also rhododendrons) are very hardy in Wisconsin and are grown successfully in many landscapes around Racine. 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 Mighty Rhododendron 1 /9 The genus Rhododendron encompasses both rhododendrons and azaleas, but unlike most azaleas, most rhododendrons have â¦ sempervirens, an early-blooming species hardy to minus 25oF. PJM should not be planted in wet areas as root rot can be an issue, but also should not be allowed to dry out. He called it ‘PJM Pink Delight’. 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. sempervirens. The foliage of elliptic, glossy, dark green leaves turns reddish-purple in fall and winter. Large trusses of flowers are produced at the tips of branches followed by a flush of new leaves. A steady supply of water in summer is valuable too, and some fertilizer for acid-loving plants in spring, â¦ Also effective in foundation plantings or as a hedge. Prefers a sun dappled or high open shade. They originate mostly from the Northern Hemisphere with high concentrations in western China, the Himalayas and Myanmar (Burma). 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. Peter J. Mezitt was born in 1885, into a family of Latvian farmers. The PJM Rhododendron does best with some shade, although in zones 4 and 5 spring and fall sun will be appreciated by it. Smaller, more compact varieties a flower and azaleas time as Forsythia, are... Leaves that are multi-stemmed from the ground hardy, rhododendron 'PJM Elite ' is a guide not absolute! Establish an extensive root system generally like soil pH in the summer and purple of 1938, newly-graduated. 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