I am pretty new to keeping plants, and I have a Euphorbia Milii as a houseplant now sitting in a terracotta pot. I planted it in cactus soil, and I generally water it well, waiting for the soil to dry out. I test this by poking my finger into the soil a couple of inches. There is about an inch of volcanic gravel at the bottom, and only one drainage hole. The plant is about 10 inches tall, and hasn't grown in the year I've had it.
Basically, since I got it, it's been steadily losing leaves. It also doesn't seem to be growing any new ones, and so the result is a sparse - looking plant. The weird thing is that it's continuously blossoming, and I see more flowers on the way.
This is nice and all, but I really would like the plant to grow, and look a little fuller.
Does anyone know what might cause such a plant to grow not leaves, but flowers only, and not increase in size? The pot seems a little large for the plant, but I figure it doesn't really matter as long as the soil drains well. After doing some reading on the matter, I think I should ditch the gravel and put in some more soil, and possibly drill some more holes in the pot. Do these sound like a good idea?