It was discovered in the Thalai Kundah region of the Nilgiri Mountains, India and appears to be endemic to that area.

[1] Pogostemon rajendranii grows up to 10-15 cm tall.

Its stems have distinctive pinkish hairs that turn golden-yellow when dry.

As a lithophyte, it grows on dry rock crevices.

Going by its exclusive discovery in Thalai Kundah, which is at an altitude of 2209m, it is currently thought to prefer the distinctive Tropical Montane Forests and Montane Tropical Climate of that region.