Please Help with Agave problem
My beautiful agave has ugly yellowish spots on it. I transplanted it last year and it has more than doubled in size but it has these spots on it. It is in front of a large window that get full sun in the morning. I was about to take it outside to acclimate it to my back porch which only gets partial morning sun.
A few days ago, I fed it with half strength organic fertilizer thinking it may not be getting nutrients from the potting medium which is 2/3 cactus medium and 1/3 potting soil. I had the parent agave to this plant for about 20 years and have never seen this before. I will post another picture that has different looking spots on a smaller plant that came from the same parent plant. Could it be from cold - too close to a window? Nutrition deficiency? Disease? What is it and how should I treat it?