Hi Dale, unfortunately mine isn’t so green in the RV either! I wonder if it has to do with the greater temperature fluctuations? In fact, I don’t have the greenest thumb in general even though I try and want to. My mom is an amazing gardener and plant parent but I didn’t get those genes or traits.
What kind of plants have you not had success with? You may want to try an aloe plant and something else hearty and made for indoor enjoyment.