leaning flowers

I love the colors of the Nicotiana flowers- ranging from white tinged with pink through violet, darker purple and mauve. But they all reach away from me, out through the balcony railings.

I don't know if they're reaching for sun, or just falling over. Maybe the containers are too small, they couldn't grow big enough root system to support the stems and got top-heavy? or perhaps I don't water them enough- I keep the soil saturated, but just one day without watering and the broad leaves start to shrivel.

I still like them, I just wish they would face me.