The older leaves shed in winter, with newer mahogany-colored leaves replacing them. Be prepared to do a little research, because there are a number of potential problems to consider when trying to account for why azaleas fail to bloom; you will learn about them below. Encore Azalea is the best azalea you'll ever plant. This versatile shrub can be used in many aspects of the landscape. Encore Azaleas have 31 varieties of bloom colors and sizes to choose from and thrive equally well in high filtered shade or sunny locations - unlike any other azalea in the world. Stewartstonian azalea: Plant Type: Broadleaf evergreen shrub: Mature Size: 4 to 5 feet tall, similar spread: Sun Exposure: Full sun to part shade: Soil Type: Fertile, evenly moist, well-drained soil: Soil pH: 5.0 to 5.5 (acidic) Bloom Time: April or May: Flower Color: Orange-red: Hardiness Zones: 5 … For a formal sheared hedge planting 2 to 3 feet apart is recommended. These plants don't grow well if subjected to prolonged temperatures over 90 degrees Fahrenheit, and may die out if winter temps fall below about minus-5 degrees. A medium-sized (4 to 5 feet) low-spreading shrub, it has deep-green glossy leaves that may turn a chocolate-reddish color by late fall in regions with cold winters. This is a relatively low maintenance shrub, and should only be pruned after flowering to avoid removing any of the current season's flowers. Add limestone or lime to soils to raise the pH. Growth habit varies from 2’ to 8’ with equal spread depending on the variety. This is a four-season shrub that offers more than most azaleas and rhododendrons. Acidify soils as needed (plants generally like soil pH in the range of 5.0 to 5.5). Fertilize this plant annually with compost. Make sure the shrub's soil gets consistent moisture—a total of roughly 1 inch per week, preferably in at least two separate waterings. Join our friendly community that shares tips and ideas for gardens, along with seeds and plants. Azalea 'Stewartstonian' Azalea ZONE 5 50% OFF Exceptionally vivid, brick-red flowers appear in early June and are showcased beautifully against the small but … This plant is exceedingly fussy about its soil and will fail to thrive if the pH and basic soil nutrients aren't to its liking. Glossy foliage is evergreen. Prefers a moist, well drained, acid soil. Azaleas are among the most popular spring flowers in North American landscaping and should be given a location where you can easily take in their beauty as you go about your daily chores in spring. Shiny green leaves turn wine red in Autumn. Fungicidal sprays and powders may prevent or cure some fungal diseases. JPCA5F11WC. David Beaulieu is a garden writer with nearly 20 years experience writing about landscaping and over 10 years experience working in nurseries. Growth habit varies from 2’ to 8’ with equal spread depending on the variety. Azaleas typically don't react well to extremely dry environments. The best time to plant azaleas is in late spring or early fall. Deciduous varieties flower more profusely in full sun. 'Stewartsonian' has attractive evergreen foliage that makes it a good choice in almost any four-season application, from woodland borders to foundation planting. A type that many gardeners especially like is the Stewartstonian azalea. Some of the leaf fungal problems are largely cosmetic and rarely kill the plant, but root rots, vascular diseases, and some cankers may require that you remove and destroy affected branches or even the entire plant. Fertilize in the spring after blooming with a food for acid loving plants. Enrich the ground (and improve its drainage at the same time) by mixing in generous amounts of decomposed organic matter. They thrive when shielded from hot summer sun and given moist but well-drained, acidic soil. Plant this azalea in a part-shade location in the southern part of its range. Developed in Stewartstown, PA by Joseph Gable for its cold hardness and later flowering time. In colder northern regions, it will do well in full sun. A thread in the PlantFiles Pictures forum, titled Azalea 'Stewartstonian' PLANTFILES When a natural hedge is prefered space 4 to 5 feet apart. Insects that may plague azaleas include aphids, borers, lace bugs, caterpillars, leafhoppers, mealybugs, nematodes, scale, thrips, whitefly, and mites. 2 Gal. 7 Types of Azaleas and Rhododendrons to Consider for Your Landscape, 10 Types of Azaleas for the Flower Garden, 15 Recommended Flowering Shrubs for Your Home, Acidic Soil: What It Is, How You Can Change It, 'Arnold Promise' Witch Hazel Plant Profile. Like nearly all shrubs, azaleas are best planted in the spring, but fall is also an acceptable time—and it can be the most economical time, as garden centers are sometimes closing out stock at this time of year. Evergreen azaleas do well in partial shade with some wind protection. Stewartstonian Azalea is an open multi-stemmed deciduous shrub with a more or less rounded form. All require slightly acid loamy soil with adequate drainage. These are shrubs that flower on old wood, so they should be pruned after the flowering period has concluded; this gives the plant time to develop the growth that will create next spring's flowers. Makes a classy hedge or specimen plant in any landscape. The Azalea is among the showiest of all shrubs when in flower. Mr. Michael Dirr list this Azalea as Stewartstown in his 'Manual of Woody Landscape Plants'. Azaleas can be planted in full sun or partial shade; however, it is best not to plant them where temperatures get too hot. Before you begin to move your azalea, you should find a new site for it and dig a hole there. 'Stewartsonian' is an evergreen azaleas, a member of the Gable hybrid group, developed by the late Joseph Gable of Stewartson, Pennsylvania. Stewartstonian Azalea Growing and Maintenance Tips. Severe infestations should first be addressed with insecticidal soaps and oils before you turn to more toxic chemical pesticides. Healthy azaleas can be remarkably problem-free in the right environment.

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