Container grown wildflowers need to be planted at the correct time to give the best chance of successful establishment. Ideally planting should take place during calm, dry weather when the soil can be worked, between late September and early April, when rains are likely to aid establishment. If planting takes place during the summer months, then it must be looked after carefully to ensure establishment. These plants, smaller than most container grown bedding plants, will grow and establish vigorously if planted at the right time but will very rapidly die on dry, windy sites in early summer.