Simply keep the soil moist not wet and feed every couple of weeks and take off the dead flowers.
Minerals
There are quite a few different kinds of popular red and pink flowers that can be found in potted pots. Geraniums and petunias are both very popular flowers found in pots.
Geraniums(Pelargoniums) are perennials therefore given the right conditions will flower constantly.
If there is enough dirt on the roof, anything can grow there! What types of flowers you can grow on your roof depends on where you live. Good choices for potted plants grown on a roof top in most climates include geraniums (these are really called pelargoniums, but most people call them "seed geraniums"), petunias, pansies, lobelia, nicotania, miniature sunflowers, nasturtium and marigolds.
Uh...Geraniums?
I love to decorate my balcony with colorful geraniums in the summer.
The plural of geranium is geraniums. As in "the geraniums look lovely".
Still Life with Geraniums was created in 1905.
Potted history
Terra cotta containers are nice pots for Geraniums because they are inexpensive. Geraniums grow quickly and you will be changing to bigger post soon.
Mayella Ewell grew red geraniums in her yard. These flowers were a symbol of her desire to create beauty in an otherwise rough and impoverished environment.
Potted Shrimp was created in 1970.