Rhododendron - Search results

Botanical name: Rhododendron arborescens

Common name: Smooth Azalea

Family: Ericaceae

USDA Plant Hardiness Zone Map

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Botanical name: Rhododendron austrinum

Common names: Florida Azalea, Orange Azalea

Family: Ericaceae

Origin: Florida

Rhododendron austrinum, or the Florida Azalea, is native to Florida and parts of the southeastern United States. It usually grows as a single large shrub, typically 5-10ft tall, or a small shrub, 2-5ft tall. This evergreen plant can also be used for bonsai as it has attractive glossy foliage and stunning yellow, orange flowers, which are very fragrant and attractive to butterflies and hummingbirds.

Rhododendron austrinum is best grown in USDA Zone 9-11, in an area of full sun exposure with regular water. It can also tolerate partial shade, but the blooming will be minimized for this condition. When grown in cooler regions, such as Northern climates, growing the Rhododendron austrinum in a protected area and in a pot is highly recommended. to increase its chances of survival, place the pot in a sunny area, such as a sheltered porch or a heated greenhouse, and water frequently. A well-draining potting soil should be used.

When exiting dormancy, Rhododendron austrinum requires higher levels of water than usual. To prevent flower bud aborting in cooler climates, place a protective layer of mulch around the plant in the fall and refrain from pruning plants.

In summary, Rhododendron austrinum, or the Florida Azalea is an evergreen shrub with attractive glossy foliage and stunning yellow, orange flowers, which are very fragrant and attractive to butterflies and hummingbirds. It grows best in full sun, with regular water, in USDA Zone 9-11, especially when grown in a pot in cooler regions. When exiting dormancy, Rhododendron austrinum needs higher levels of water and a protective layer of mulch needs to be placed around the plant in the fall to prevent flower bud aborting.

Botanical name: Rhododendron canescens

Common names: Wild Honeysuckle, Piedmont Azalea, Hoary Azalea

Family: Ericaceae

Origin: EN America

Rhododendron canescens is a hardy shrub that deserves wider landscape use. The 4 to 5 foot plant makes a spectacular spring show since the flowers open before the leaves have expanded. Rose pink to white flowers clusters in early spring; delicate sweet fragrance.

Botanical name: Rhododendron forrestii

Common name: Azalea

Family: Ericaceae

Rhododendron forrestii (Azalea) is a small plant that can grow up to 5 feet tall. It requires regular watering and grows best in full sun conditions. The foliage is almost hidden by the glowing red, crimson, and vinous flowers that bloom in abundance when the weather warms up. This plant is cold hardy in USDA Zone 7-9.

To plant Rhododendron forrestii, it is best to wait until spring. Water regularly in the first season and apply a light, slow-release fertilizer. An ideal soil for this plant should be slightly acidic and well drained.

In cold regions, Rhododendron forrestii can be grown in containers and overwintered indoor. When planting in containers, ensure that the container chosen has drainage holes at the base to prevent waterlogging. Once planted, keep the soil moist by watering and feeding during the growing season. When containerizing, it is important to use a well-drained potting soil mix.

Elisabeth Hobbie is variety with short, glossy dark green leaves and loose clusters of bright crimson-scarlet, bell-shaped flowers that are 2 inches in width. It blooms from early spring.

Botanical name: Rhododendron hippophaeoides

Common name: Hippophaeoides Rhododendron

Family: Ericaceae

Origin: China

Botanical name: Rhododendron impeditum

Common name: Dwarf Rhododendron

Family: Ericaceae

Botanical name: Rhododendron kiusianum

Common name: Kyushu azalea

Family: Ericaceae

Origin: Japan

Botanical name: Rhododendron laetum

Common name: Vireya Rhododendron

Family: Ericaceae

Origin: Nev Guinea

Rhododendron laetum X zoelleri has large 1-1/2" to 2" salmon-yellow flowers with orange tips in trusses of 6-10. Like all Vireyas it can bloom year round since they are subtropical. Heaviest bloom is in early spring and mid-autumn. They can be grown with regular rhododendrum conditions but also can be grown as epiphytes, either in hanging baskets or mounted on cork. They are cold sensitive and only tolerate light frosts. They also do not like sustained hot temperatures as they generally come from higher altitudes.This adaptability makes the Vireya Rhododendron an ideal subject for cultivation in a temperate climate - the basic requirements of a frost-free growing area and sharply draining compost reflecting their natural environment. They need good air circulation as they can be prone to mildew under stale air conditions.

Botanical name: Rhododendron lochiae

Common name: Australian Rhododendron

Family: Ericaceae

Origin: Queensland (Australia)

Rhododendron lochiae (Australian Rhododendron) is a small shrub that is native to cold climates, reaching a height of 2-5 ft. It can grown in USDA zones 7-9. The plant is best grown in a cold frame, conservatory, or greenhouse in order to maintain temperatures above freezing in the winter. Good drainage is necessary to avoid excess wetness in these sheltered environments. When grown outside in cold regions, the plant should be placed in a sheltered, sunny spot with protection from cold winds. It can withstand temperatures as low as 25°F when planted in the open garden. To keep the plant healthy, water it regularly and feed it with a balanced fertilizer. After flowering, lightly prune the shrub to maintain its shape.

Rhododendron lochiae can also be grown in put. It is not recommended to repot the plant in the winter, but it can be done in the spring. In the summer, prune and pinch the new shoots to promote better shape. It is attractive to butterflies and hummingbirds and is known for its deep red, crimson, and vinous flowers that grow in clusters of up to six.

Botanical name: Rhododendron luteum

Common names: Yellow azalea, Honeysuckle Azalea

Family: Ericaceae

Origin: Southeastern Europe