Water them enough just to get them established, and then keep them dry and well-drained as they grow. Blooming profusely in mid to late spring, sporadic additional flowering may occur throughout the summer. Seasonally, Nature Hills offers hand selected, high quality bare root trees, shrubs and perennials. Thrift makes an attractive addition to coastal gardens, which have similar conditions to its natural habitat. The Plant Sentry Compliance Officer works closely with NatureHills.com and each nursery or fulfillment center to ensure only compliant plants are sold to customers. All our plants are native British wildflowers grown in Peat free compost in our sustainable nursery.