This is my bougainvillea plant that was outside this summer and bloomed very well, but since fall I have brought indoors but the leaves are falling and the stems look dry. First I thought the leaves were falling due over watering so I cut back, now the leaves look green but frail and still falling, even the small stem that caught root (in pic) had 2 leaves but they also fell off. Any advice will be appreciated. Thanks
Your Bougainvillea should be placed in a south facing window while indoors.This light intensity is less then it would receive outdoors but it should keep the going through the winter months.
Water your plant when the soil dries out slightly. Make sure the soil is well draining.
You can also place the pot under a grow light in addition to the sunlight.