Coastal Azalea, Dwarf Azalea, Azalea atlantica, Midseason Azalea. Native to the south eastern coastal plains of the United States, Rhododendron atlanticum, commonly known as Coastal Azalea or Dwarf Azalea, is a delightfully fragrant, semi-dwarf, deciduous Azalea.
Flame Azalea Information A showy, deciduous shrub, flame azalea (Rhododendron calendulaceum) is native to the Appalachian Mountain region. This low-maintenance, fast-growing plant tops out around 5 feet tall and 7 feet wide at maturity and is a heavy bloomer when in the right conditions. Flame azalea is suitable for growing in U.S. Department of Agriculture plant hardiness zones 5a through 8a.
Often mistaken for one another, mountain laurel and rhododendron are flowering, evergreen shrubs that share more similarities than differences. These plants are often found growing side-by-side in wooded, mountainous areas throughout the eastern United State.
Azaleas are also rhododendrons. The group of plants commonly called azaleas are actually classified by botanists as belonging to the Genus Rhododendron and the name for each type of azalea has both the word “Rhododendron” and the species name, just as with other rhododendrons.
Purple Formosa Azalea is a larger sized evergreen azalea from the Southern Indica Family. Produces good numbers of 2 1/2" - 3" diameter rich light to medium purple / lavender colored blooms throughout the spring, and known to also produce smaller, shorter, sporadic "spurts" of blooms through the fall season as well.
Azaleas and Rhododendrons: What is the Difference? Deciduous Azaleas, Evergreen Azaleas, Lepidote Rhododendrons, Elepidote Rhododendrons Producing a blaze of color from early spring through the summer, and even into the fall, Azaleas and Rhododendrons are popular ornamental shrubs for gardens of all sizes.
Both species and hybrid rhododendrons (including azaleas) are used extensively as ornamental plants in landscaping in many parts of the world, including both temperate and subtemperate regions. Many species and cultivars are grown commercially for the nursery trade. Rhododendrons can be propagated by air layering or stem cuttings.
While Ghent, Knap Hill, Exbury and other related hybrids may have some native American blood in them, they are for the most part hybridized for the European climate. In the United States, particularly in the southeastern area where most American azaleas thrive, these hybrids in general eventually die.
Rhododendron molle (羊踯躅) is a rhododendron species native to China and Japan, where it grows at altitudes of sea level to 2500 meters. It is a shrub that grows to 0.5–2 m in height, with leaves that are oblong to oblong-lanceolate, 5–11 by 1.5–3.5 cm in size. Flowers are yellow with dark red flecks.
Exceptionally cold hardy and decorative, Rhododendron mucronulatum 'Cornell Pink' is also prized for its early spring blooms. This medium-sized deciduous shrub bears graceful clusters of 2 to 3, broadly funnel-shaped, clear pink flowers, up to 2 in. wide (5 cm), on bare branches from mid winter to early spring.
Rhododendron spp. (rhododendrons and azaleas) Andromedotoxins, or more commonly grayanotoxins, are found in the flowers, leaves, twigs, and stems of plants in the Ericaceae family. 1-4 More than 25 different grayanotoxin isoforms (e.g., grayanotoxin I, grayanotoxin II, etc.) exist depending on the species of plant. 1 Plants in this family are very poisonous to animals and humans.
Rhododendron viscosum, commonly known as swamp azalea, is a loose, upright-spreading, deciduous woody shrub that typically grows to 3-5' (less frequently to 8') tall. Branching opens up with age. It is one of 17 species of azalea which are native to the U.S.
Names: Occidentale means western; so Rhododendron occidentale, literally means, “western rose-tree.” It is sometimes called Pacific Azalea or California Azalea. Relationships: Azaleas are divided into two subgenera (deciduous and evergreen) in the very large genus of rhododendron (see Pacific Rhododendron).