North American azaleas are deciduous and produce two types of buds.

[1] The flower color, fragrance, and number of stamens vary among species.

It can also be found in southern Tennessee, east Georgia, the panhandle of Florida, and eastern Mississippi.

They are sticky due to glandular and non-glandular hairs on the floral tubes.

The leaves are dull to slightly glossy, and dark to medium green.

It grows from Alabama to Pennsylvania, along the top of wet mountains and near fast moving streams.

The flowers can be up to 2 inches wide, white, and commonly have a yellow patch on them.

[1] Rhododendron atlanticum, the dwarf azalea, grows on the coastal plain from Georgia to Delaware.

The pinkish red glands form a line onto each petal tip.

It is found in the panhandle of Florida, and the southern regions of Georgia, Alabama, and Mississippi.

It has become a popular species in North America because it is easy to grow, is very colorful, and also early to bloom.

[1] Rhododendron calendulaceum is commonly called the flame azalea for its bright yellow, orange, or red color.

R. canescens grows in northeast North Carolina, north Tennessee, southeastern Kentucky, southern Illinois, eastern Oklahoma, southern Arkansas, the peninsula of Florida, and southeast Texas.

[2] Rhododendron colemanii is commonly called the Red Hills azalea.

This species can be confused with R. calendulaceum and R. flammeum due to the color of the flowers.

Rhododendron flammeum, also known as the Oconee azalea after the river in Georgia where was first discovered.

[1] With a species name of flammeum, it can be confused with the flame azalea (Rhododendron calendulaceum).

[1] Growing in the form of a shrub in dry woods, on slopes, ridges and stream bluffs, the Oconee blooms in the spring.

This azalea blooms in the spring in moist wooded areas along streams, thickets, and swamps.

This plant only grows in eleven counties on the border of Alabama and Georgia where creeks and ravines are present, blooming from July to September.

In addition to the coastal areas, the swamp azalea can be found inland in higher elevations.

[1] Rhododendron luteum is in the subgenus Pentanthera, but it is not a North American species.