The two prettiest varieties of Gypsophilia (and the most common) are G.Paniculata and G.Elegans, both of which are lovely.
These are really light airy fluffy plants that are best used as infilling in the gaps between other plants. As you can see from the picture, they don’t really have a shape, it’s more an explosion of fluff, so to get the best out of them, they need to grow around and through other plants, that way you get the pretty fluff without seeing the spiderweb of stems all over the place that lies beneath.
Gypsophilia are really shallow rooted plants, so are very easy to pull up accidentally, they also hate damp soggy soil and will quickly die if left in soggy soils. After they have flowered, you can cut down the spent flower talks and shake the seeds back onto the ground or you can become a real gardener and take the seeds and sow them in little pots ready for planting out next year!
Or you can see how we use them in our designs: