I bought a beautiful jasmine (officale?) from Walmart a few weeks ago that had buds on it and a couple of flowers have bloomed. However, several buds have dried out. I've been good about watering this plant, but does it need a ton of water?? My porch is SW facing, so it is getting a fair bit of sun. Also, are the blooms supposed to last for multiple days? Because they haven't... I'm new to both jasmines and container gardening. Any advice would be appreciated!