How can I tell if my inside geraniums need water or have too much water? Sun exposure?

I have mine in a window that gets very little sun in the winter. I water all my plants about 1–11/2 weeks tho sometimes a little longer, whoops! I just cut mine back if they get too leggy. I would bet you are watering too much.

This is an extremely helpful article, giving three diffferent ways to winter geraniums.

I haven’t had much luck bringing basil in over the winter, but have moved one of the plants into a sub-irregation planter made out of a 2 liter soft drink bottle, like this. I made a ball out of a 6” piece of fabric and tied it together with a 1” x 15” strip of fabric. I put the ends of the fabric through the neck of the soft drink bottle. Then I water the basil through the dirt, until the water reservoir has about 1” of water in it. The fabric strip acts as a wick to draw the fabric up into the soil, keeping it uniformly moist. I rewater when all the water is gone from the reservoir. So far, so good. I’ve not been able to cut basil, but I am getting new leaves along the stem, close to the soil.

I have successfully overwintered geraniums. I bring them in, give them a severe hair cut and then put in a room that is flooded with sunlight when the sun is out. Even on cloudy days there is reflected light. I might add a little Miracle Gro once during the winter.

I water only when the soil is dry to the touch. I have had very good luck.

Here is an example.

Flowering plants in winter

Beautiful lily!!