Baby’s Breath Seeds (Natural Form) 6500. Baby’s Breath (Gypsophila) produces beautiful billowy mists of tiny white flowers from July through August. Excellent as a fresh cut flower or as a background in dried bouquets. Stately plants grow to 90 cm (36") tall, prefer neutral to somewhat alkaline soils. Plants will benefit from an application of gypsum to the soil every spring - this helps to maintain a plant favourablle soil pH.