Hi Makiko, et. al., Your description of browning leaves on Babiana sounds like it may be spider mites causing the problem. I have found that all Babiana are susceptible and B. rubrocyanea is particularly attractive to the little nasties. If the infection is bad, you may be able to see webbing between the leaf ribs, though you will have difficulty seeing the mites without magnification. If you squeeze a leaf gently between two fingers, an infected leaf will feel a bit "sandy" and leave a residue on your skin (the plant sap from inside their bodies). They especially like warm dry weather and outbreaks can occur very quickly. I spray Babiana twice each winter with an miticide (Tetrasan, a chitin synthesis inhibitor, has never harmed the plants). Unfortunately, all miticides are expensive and should be rotated frequently to prevent resistance. Also, some states may require a pesticide applicator's license before purchase. If you think spider mites are the problem, I can send you a small amount of Tetrasan to help for now. If anyone else wants to swap some doses for another miticide, I would be glad to increase my rotation variety. Sorry for my delayed response, I was gone all of January. monica