Covent Garden Gypsophila Seeds (Baby’s Breath). Beautiful sprays of white, airy flowers about 2 cm (3/4″) across form on these 60-90 cm (2-3′) high multi-stemmed plants. The first time you grow Baby’s Breath you may find it a bit persnickety. Try it a couple of times to get used to its ways and you will come to love this very useful cut flower. Baby's Breath is a heirloom flower that has also been known through the years as Chalk Plant (a reference to the plants love of alkaline soil).