If your Adenia volkensii is showing signs of yellowing leaves, don't worry — you probably just need to adjust your watering technique. It's most likely due to a few too many or not enough water. If you're overwatering, that can sometimes happen. It's easy to overdo it and end up with roots that can't breathe! On the other hand, if you're not giving them enough water, they might be feeling a little stressed and lacking the nutrients they need to stay healthy.