Rhododendrons might have the synonym "heaths" (the general family) or specifically "azaleas" (two subgenera of rhododendrons).
A synonym for azalea is rhododendron. However, the reverse is not true. All azaleas are rhododendrons, but not all rhododendrons are azaleas.
Well you just did. But: I planted rhododendrons.
Peter Alfred Cox has written: 'The smaller rhododendrons' -- subject(s): Rhododendrons 'The cultivation of rhododendrons' -- subject(s): Rhododendrons 'Rhododendrons' -- subject(s): Rhododendrons 'Cox's guide to choosing rhododendrons' -- subject(s): Rhododendrons
Rhododendrons and azaleas are closely related. Rhododendrons have 10 or more stamens per lobe. Azaleas have only five. Most rhododendron are evergreen and azaleas are deciduous.
Robert L. Ticknor has written: 'Chemical weed control in rhododendrons' -- subject(s): Weed control, Rhododendrons
Rhododendrons are difficult to propogate from cuttings, they are usaually done by layering or grafting. If you want to try cuttings July is around the best time.
Rhododendrons are the national symbol of Nepal. Being a weaker type of plant, Rhododendrons die easily and is usually symbolized as death or decay in Northlandic religions.
They require an acid soil.
An acetylandromedol is a specific grayanotoxin, a toxin found in plants such as rhododendrons.
May and June, depending on the elevation
Because they contain tetracyclic polyol acetylandromedol
Rhododendrons help protect the soil, but they are not heavy feeders and do not change the soil much. Their leaves help build up the richness of the soil after they fall off. Rhododendrons have very shallow roots, so the leaf litter on the ground is important to protect these shallow roots from heat, cold, sun, drought, and sudden temperature changes. That is why in cultivation, they do best when they are mulched.