Dry air and decreasing daylight hours with overfertilization may be your problem. In the wild, Tibouchina grows on hillsides near streams with lots of sun and humid air. In addition, most plants are sensitive to being moved indoors from greenhouse or garden. For overwintering, they need to be kept with soil on the dry side and minimum temperature of fifty degrees F. We suggest holding fertiliser until the plant responds to greater light in the spring. Repot then, or topdress with rich compost. Prune to shape and to remove dead or spindly growth. Your warm summers will yield great foliage and blooms!
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