Plants native to the Sonoran Desert require watering every 6 months. The following perennial plant, which I am not sure is native to the Sonoran Desert, was found to thrive in the Sonoran Desert solely off rain. What is this plant?

(not flowering yet) Shub #2

  • @pnuts That seems to have a different coloration. The plant in my picture has a change in color (greenish brown → darker brown) where the branches bifurcate.
    – Geremia
    Commented May 30, 2017 at 3:54
  • It's a very young plant (<2 years old). Perhaps the desert climate stressed/discolored it?
    – Geremia
    Commented May 30, 2017 at 4:01
  • @pnuts Yeah, this one is more knobby
    – Geremia
    Commented May 30, 2017 at 4:14

1 Answer 1


This appears to be Mexican Petunia (Ruellia simplex). Should eventually have small, blue/purple petunia-like trumpet shaped flowers. The plant I have pictured has not been grown in desert climates.

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