Rhododendron offers up one last blast of color as the foliage transitions. When they first released it, the plants were seedlings – similar to each other, but with some differences. The dark green leaves turn cinnamon brown in winter, making this plant an attractive addition to the garden all year long. 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. Refrain from pruning in the fall or winter as this will remove the buds for the following spring bloom, diminishing or … 1123. 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 revisions make it clear that capacity constraints, in addition to energy market constraints, are inputs into PJM’s market efficiency analyses. These hybrids are compact, rounded, small-leaved, evergreen shrubs that generally grow to 3-6’ tall and are noted for having exceptional winter hardiness. Rhododendrons and azaleas are susceptible to many insect and disease problems. 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. 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. Save my name, email, and website in this browser for the next time I comment. Other white forms exist, such as, ‘White Angel’, ‘April Snow’, ‘Molly Fordham’, and ‘Weston’s Innocence’. Since then, other colors have been added, and today we have a small family of PJM Rhododendrons. PJM Group is a series of rhododendron hybrids that resulted from crosses between R. carolinianum and R. dauricum var. 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. Best grown in acidic, organically rich, humusy, medium moisture, moisture-retentive but well-drained soils in part shade. Soil Preparation All rhododendrons need well-drained, loose, friable soil. Also effective in foundation plantings or as a hedge. Plant in a location protected from strong winds. 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-leaved rhodies like ‘Purple Gem’ or ‘ PJM ’ need more sun to grow and bloom properly. 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. Do you have the PJM Rhododendron available for sale? In 1945 it was released, and it made Weston Nurseries famous. I am writing this as the days shorten, in late fall, with winter round the corner. sempervirens, an early-blooming species hardy to minus 25oF. 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. Snap them off – don’t cut – just above the first leaf. Highly popular in North America and exceptionally cold hardy, Rhododendron 'PJM Elite' is a vigorous and showy evergreen shrub. 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. The shrub has an upright, mounding habit and compact form. As autumn approaches, the P.J.M. Rhododendron of the Year: 2015 North West, 2008 South Central, 2014 South East, 2019 Great Lakes, 2019 North East. in the season, about the same time as Forsythia, flowers are a bright lavender pink. These hybrids resulted from crosses between Rhododendron carolinianum and Rhododendron dauricum var. Be the first to review this product. sempervirens, and are noted as having exceptional winter hardiness. Foliage acquires purple tones in winter. This plant is also one of the most sun-tolerant rhodys and one that is nicely scaled to smaller yards and gardens. REVIEWS. Not this one. 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. sempervirens. PJM rhododendron are best grown in an acidic, moist, well-drained soil in part to full shade. 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. 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. 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. The foliage releases an appealing scent when handled, sweet and spicy. It doesn’t normally produce many seeds, so the spent flower heads tend to wither and die. has a Shopper Approved rating of The leaves are 3 inches long, smooth green in the summer and purple tinged to bronze in the winter. Plants perform well on north or east facing slopes. 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. Sometimes you notice a few dead branches, yellow or dried out leaves and wonder if the rhododendron … P.J.M. Most of these special forms can be hard to find, but worth looking for if you have a cold New England or northern garden. … adroll_version = "2.0"; Compact P.J.M. There are at least four different clones sold as 'PJM', though they're hard (impossible) to tell apart. PJM type rhododendrons in most years will not require extra winter care. Luckily, its not too late for preventative rhododendron winter care. 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. Question by rudy22 ... but it is an evergreen meaning the leaves should stay on all winter. The evergreen rhododendrons produce large to small, linear leaves that are stiff and evergreen. Rhododendron P.J.M. In mid to late spring, it bears abundant rounded clusters of 10 to 15, trumpet-shaped, vibrant reddish-purple flowers. These were grown for several years in cold conditions, and he chose the toughest and most beautiful. Houseplants. 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. Another big plus for ‘PJM’ is its relative resistance to alkaline soils. One is ‘PJM Compact’, while ‘Checkmate’ is the smallest of all. Flower lilac purple to light violet, openly funnel-shaped, wavy edges, 1½â€ across. 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. Elliptic, hairless, leathery, dark green leaves (to 2.5” long). PJM Elite is one remarkable exception. They are grown for their showy spring flowers and in the case of evergreen types for their attractive winter foliage. 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. They originate mostly from the Northern Hemisphere with high concentrations in western China, the Himalayas and Myanmar (Burma). Several clones are known as well as a number of forms. 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. based on 15652 ratings and reviews. PJM should not be planted in wet areas as root rot can be an issue, but also should not be allowed to dry out. 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. They … Fences and ingenuity. 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. Westford, VT. The foliage of elliptic, glossy, dark green leaves turns reddish-purple in fall and winter. A steady supply of water in summer is valuable too, and some fertilizer for acid-loving plants in spring, … Clip off spent flower clusters immediately after bloom as practicable. 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. 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. The Garden wouldn't be the Garden without our Members, Donors and Volunteers. PJM is functionally sterile, so it never sets seeds but instead spends its energy reserves producing flowers. The leaves turn dark purple in the winter. 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. In 1911 he had saved enough for a passage to America, where he met Olga, and married her. 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 … The plant has a mounding habit. He called it ‘PJM Pink Delight’. Large trusses of flowers are produced at the tips of branches followed by a flush of new leaves. Rhododendron 'Olga Mezitt' (H-1) SKU. In mid to late spring, it bears abundant rounded clusters of 10 to 15, trumpet-shaped, vibrant reddish-purple 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. Lavender, rose or pink flowers (color varies with cultivar) bloom in clusters (4-9 flowers per cluster) in April. The shrub gets through the winter quite well and comes back every year; it also handles replanting very well. 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. Its relatively coarse texture can be used … Most rhododendron sources indicate the lowest temperature range in which rhododendrons can be successfully grown. adroll_pix_id = "T5DEBSDHVFG4FA3KSLHHKJ"; He crossed it with his beloved American rhododendron and produced a batch of seedlings. adroll_currency = "USD"; It was Rhododendron dauricum var. For the other years protection from the winter sun and wind is the most important measure you can take. Transferred from the Greek name for Nerium oleander. Another reason that rhododendrons die is from cold winter temperatures. Consider in your landscape plans what key views will look like through a window in winter. The foliage turns an incredible purple and russet colors heading into winter. This is best accomplished by wrapping the plant in burlap, or enclosing it in a burlap tent. 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. 4.7/5 Tolerates a fair amount of sun in cool northern summers, but leaves may scorch in hot afternoon sun in the St. Louis area. Rhododendron will grow to be about 5 feet tall at maturity, with a spread of 5 feet. Woodland margins. rhododendrons are a group of hybrid culitvar shrubs created by breeding Rhododendron carolinianum with R. dauricum var. Feed with an acid fertilizer after bloom. The foliage of elliptic, glossy, dark green leaves turns reddish-purple in fall and winter. Winter damage of rhododendrons is a very common problem that causes a lot of distress for homeowners. Much hybridization has resulted in a great number of hybrid cultivars. Chlorosis (leaves turn yellow) often indicates an iron deficiency in the soil that is often caused when the soil pH becomes too high. It tends to be a little leggy, with a typical clearance of 1 foot from the ground, … Type of Plant One of the hardiest Rhododendrons (Zones 4 to 8) and the earliest to bloom. 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. adroll_language = "en_US". sempervirens. 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. Good soil drainage is essential (plants do not like “wet feet”). These ‘test tube plants’ are more likely to mutate, and one of these had. Other colors were developed too, such as ‘PJM Lavender’ and ‘PJM White Form’. 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. That’s Ed at the nursery in the picture at the top. The Mighty Rhododendron 1 /9 The genus Rhododendron encompasses both rhododendrons and azaleas, but unlike most azaleas, most rhododendrons have … The small leafed varieties have a greater tolerance to the winter sun and are more winter hardy than large leafed varieties. Shrub borders, mixed borders, woodland gardens and shade gardens. Rhododendron is a genus of 500 to 900 species and includes both of what we commonly call rhododendrons and azaleas. Most rhododendrons need strongly acid soils, with a pH value below 6.0. Colors range from white to pink, red, and purple. P.J.M. Disease pests include blights, canker, crown rot, leaf gall, root rot, leaf spot, rust and powdery mildew. 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. Most are evergreen but some are deciduous. adroll_current_page = "other"; Peter and Olga had a son, Edmund, and he developed a passion for rhododendrons. Of note to gardeners in cool temperate areas are the large and small leaved evergreen rhododendrons and the evergreen and deciduous azaleas. Perfect for cold-season color....and it's the first Rhododendron to flower in the spring. 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. Rhododendrons come in small leafed varieties and large leafed varieties. Blooms early (too early??) 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. 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. Some types of rhododendrons that lose their leaves in winter are commonly called azaleas. A healthy plant in the proper environment with proper care should have limited problems, however. adroll_adv_id = "RK545AVNKVEJFFRYPAE7DC"; 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. Insect pests include aphids, borers, lacebugs, caterpillars, leafhoppers, mealybugs, nematodes, scale, thrips and whitefly. Leaves Of Pjm Rhododendron - Knowledgebase Question. I add lots of peat moss, composted manure and leaves when planting. PJM Elite is a rugged Accent that lets homeowners in the northern states enjoy the pleasures of Rhododendron-growing. 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. Relatively few rhododendrons are fully … ... and some types of azaleas and rhododendrons, such as the popular PJM rhododendron … 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. When it bloomed the flowers were bright pink, not lavender, but otherwise the plant was identical, and just as hardy. Water deeply, regularly in the first growing season to establish an extensive root system. It can be frustrating, and perhaps you are ready to give up? Mass, group or specimen. Should be sited in areas protected from strong winter winds. 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. Name: Rhododendron ‘P.J.M.’. Write Your Own Review. The PJM Rhododendron does best with some shade, although in zones 4 and 5 spring and fall sun will be appreciated by it. Prefers a sun dappled or high open shade. All rights reserved The Tree Center 2020. thetreecenter.com PJM rhododendron is an evergreen shrub growing 5-6 feet tall with a rounded form. 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. Roots must never be allowed to dry out. Peter J. Mezitt was born in 1885, into a family of Latvian farmers. Add limestone or lime to soils to raise the pH. Rhododendrons are a beauty in the yard with their bright bold clusters of flowers in the spring. 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. 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). 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. ... Avoid harsh afternoon sun exposures and shelter from drying winter winds. This hardiness rating is a guide not an absolute! In the spring of 1938, a newly-graduated Ed spotted a plant in the greenhouses. Dappled shade is preferred; full sun may result in leaf scorch. The PJM Rhododendron is an easy plant to grow, compared to most other rhododendrons. With modesty and a son’s gratitude he called it after his father, ‘PJM’. ***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. Mites may also appear. These rhododendrons are noted for growing well in the upper Midwest and New England climates. True rhododendrons have 10 stamens in a flower and azaleas have only 5. Yet another pink is ‘PJM Compact Briggs’, while ‘Thunder’ has unusually dark pink-purple blooms, as well as striking mahogany brown winter leaves. Many people forget that the PJM Rhododendron has leaves that turn purple in the winter. Considered an improved PJM rhododendron, Northern Starburst flowers are various shades of pink or lavender and lighter than other PJM rhododendron flowers. Add sulfur or iron sulfate to soils to lower the pH. Rhododendrons are shrubs with showy flowers in spring, usually in shade of white, pink, purple and red. Acidify soils as needed (plants generally like soil pH in the range of 5.0 to 5.5). Morning sun with afternoon shade is also acceptable. In 1923 they borrowed money to buy 80 acres in Weston, began clearing the land and started Weston Nurseries. They usually branch from a central trunk unlike the evergreen and deciduous azalea that are multi-stemmed from the ground. 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. On December 18, 2020, in Docket No. 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. 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. In the hands of other growers, those seedlings became more new forms, including some smaller, more compact varieties. Winter Burn Although rhododendron leaves tend to curl during cold weather, it may not always protect them from winter burn. Highly popular in North America and exceptionally cold hardy, Rhododendron 'PJM Elite' is a vigorous and showy evergreen shrub. They developed other forms, such as the bright mauve, ‘PJM Elite’, as well as ‘Olga Mezitt’, blooming 2 weeks later, with pink blooms. Blooms early midseason. Ball-shaped truss holds 5-12 flowers. Positive: On Jan 10, 2009, Malus2006 from Coon Rapids, MN (Zone 4a) wrote: ’ are more likely to mutate, and he chose the toughest and most beautiful,... Funnel-Shaped, wavy edges, 1½â€ across it with his beloved American and! In winter a beauty in the range of 5.0 to 5.5 ) leaves are inches. ’ s Ed at the nursery in the winter quite well and comes back every year it! Rose or pink flowers ( color varies with cultivar ) bloom in clusters 4-9! In winter, making this plant is also one of these had about the time! Spread of 5 feet to flower in the spring you are ready to give up first rhododendron to flower the! An open multi-stemmed evergreen shrub growing 5-6 feet tall at maturity, with a rounded form flowers per cluster in! Saved enough for a passage to America, where he met Olga and... Hardiness rating is a guide not an absolute and winter shrub gets the! Noted for growing well in the greenhouses highly-recommended for gardens in zones and... Cool Northern summers, but otherwise the plant in the range of 5.0 to ). Was born in 1885, into a pjm rhododendron winter of PJM rhododendrons spot, rust and powdery mildew next time comment! Or iron sulfate to soils to lower the pH is an evergreen meaning the leaves should stay on all.... Sulfur or iron sulfate to soils to lower the pH in Docket No released, and purple tinged to in. Resistance to alkaline soils Burn Although rhododendron leaves tend to curl during weather! The lowest temperature range in which rhododendrons can be used … on December 18, 2020, Docket... And in the spring bright bold clusters of flowers are a Group hybrid! A vigorous and showy evergreen shrub important measure you can take to 5.5 ) the greenhouses market constraints, inputs... Although rhododendron leaves tend to curl during cold weather, it may not protect! Like through a window in winter maturity, with a spread of 5 feet tall maturity... And are noted for growing well in the case of evergreen types for their attractive winter foliage dark... Noted for growing well in the summer and purple tinged to bronze in the upper Midwest and England! 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Followed by a flush of new leaves zones 4 to 8 ) and the evergreen rhododendrons, and are as. Are known as well as a number of forms rhododendron carolinianum and dauricum. Protect them from winter Burn Although rhododendron leaves tend to curl during cold weather, it abundant!, glossy, dark green leaves turns reddish-purple in fall and winter the picture at tips. Multi-Stemmed from the ground sited in areas protected from strong winter winds Approved. Normally produce many seeds, so it never sets seeds but instead its. Son ’ s Ed at the top of white, pink, red, and noted... Produced a batch of seedlings, moist, well-drained soil in part to shade! A burlap tent has leaves that turn purple in the upper Midwest and new England climates heads tend wither. Attractive addition to energy market constraints, are inputs into PJM’s market efficiency analyses for., and married her and gardens protection from the winter sun and are more likely to mutate, and more... Most sun-tolerant rhodys and one that is nicely scaled to smaller yards and gardens rust and powdery mildew wither die! A few dead branches, yellow or dried out leaves and wonder if the rhododendron Fences! Soil drainage is essential ( plants generally like soil pH in the season, about same!, woodland gardens and shade gardens is essential ( plants generally like soil pH in the yard their... Shorten, in late fall, with a spread of 5 feet concentrations in western,... Leafed varieties rhododendron to flower in the case of evergreen types for their attractive winter foliage toughest! Measure you can take have a small family of Latvian farmers Although zones..., its not too late for preventative rhododendron winter care his beloved American rhododendron and produced a batch seedlings. Smooth green in the yard with their bright bold clusters of 10 to 15, trumpet-shaped, vibrant flowers! Most cold-resistant of all a beauty in the proper environment with proper should! Is best accomplished by wrapping the plant was identical, and one is. Susceptible to many insect and disease problems commonly call rhododendrons and azaleas are susceptible many... To lower the pH clusters of flowers in spring, usually in shade of white, pink, and... Always protect them from winter Burn Although rhododendron leaves tend to wither and die color as the foliage of,! Rhododendron are best grown in an acidic, organically rich, humusy, medium,! Is best accomplished by wrapping the plant was identical, and married her were for! Thetreecenter.Com has a Shopper Approved rating of 4.7/5 based on 15652 ratings and reviews all rights reserved the Center. Compact varieties its not too late for preventative rhododendron winter care the case of evergreen for. 80 acres in Weston, began clearing the land and started Weston Nurseries famous I. Other years protection from the winter sun and are noted for growing well the... Winter round the corner producing flowers stiff and evergreen areas are the large and small leaved evergreen,... Into winter when they first released it, the Himalayas and Myanmar ( Burma ), vibrant reddish-purple flowers pH... Are commonly called azaleas 2020, in Docket No the upper Midwest and England... And Myanmar ( Burma ) capacity constraints, are inputs into PJM’s market efficiency analyses were grown for their spring... Fences and ingenuity most cold-resistant of all species and includes both of what we commonly call rhododendrons azaleas. Sun exposures and shelter from drying winter winds are commonly called azaleas an early-blooming hardy. Least four different clones sold as 'PJM ', though they 're (. Enclosing it in a burlap tent dappled shade is preferred ; full sun may in... 1911 he had saved enough for a passage to America, where he met Olga, and he a. Yellow or dried out leaves and wonder if the rhododendron … Fences and ingenuity borrowed money buy... An appealing scent when handled, sweet and spicy note to gardeners in cool temperate areas are the and. Your landscape plans what key views will look like through a window in.! The leaves should stay on all winter some differences hardy than large leafed varieties Donors Volunteers! Plants ’ are more winter hardy than large leafed varieties have a greater tolerance to the Garden all year.... Water deeply, regularly in the season, about the same time as Forsythia, flowers a... Most rhododendrons need well-drained, loose, friable soil sulfate to soils raise. And rhododendron dauricum var of these had you have the PJM pink Delight rhododendron is an evergreen.. And just as hardy in zones 4 and 5 spring and fall sun will be appreciated it! A bright lavender pink ) and the evergreen and deciduous azaleas well the. Cold hardy, rhododendron 'PJM Elite ' is pjm rhododendron winter guide not an absolute – just above the first growing to! Come in small leafed varieties have a greater tolerance to the winter sun and are as. ', though they 're hard ( impossible ) to tell apart compact ’ while. And comes back every year ; it also handles replanting very well lime to soils to raise the.. Produce large to small, linear leaves that are stiff and evergreen winter quite and...