Avoid low-lying areas where water can accumulate, as rhododendrons are susceptible to root rot. Check for adequate space. Rhododendrons can spread out, so give them room to grow without crowding ...

Rhododendrons prefer soil that is loamy, well-draining, and acidic (<6.0) and with a high content of organic matter. Amend or avoid areas with heavy clay soils that can lead to root rot.