Question
I have a small Desert Rose plant that has been on my patio for about 6 months.  Recently I have noticed that the tips of the leaves are brown.  Almost like they have been burnt.  This is just on he tips, less than 1 cm, there is some yellowing near the tip.  The older leaves seem to be worse than the newer ones.  I think it is a nutrient deficiency but do not know for sure and if so what nutrient.  Any recommendations?  And while I am at it, should I bring it and my other succulents in this winter at the risk of them not getting enough sun?  I have some shriveled lithops(why are they shriveled?) and some cacti.  I live in Auburn, Alabama on the second floor of an apartment so I am afraid it will get too cold for them.  Do I just worry about freezing temperatures or should I worry about cool nights <45-50 degrees?

Thank you!

Answer
Hi Scottie... I can't answer your cacti problem as I do not grow them but it may tie into your desert rose problem, you are watering them too much.  Maybe once a week or if still damp as it is cooler out every two weeks.  Brown leaves is usually a sign of too much water.