Water Young Plants Deeply
While mature cornflowers are drought-tolerant, young seedlings need consistent moisture to get established. Water deeply once or twice a week, depending on rainfall and soil type, especially during the first few weeks after germination.
Once the roots are deep, the plants will handle dry spells with ease. I mulch lightly with straw to help retain moisture and prevent weed competition. Keep in mind that overwatering can lead to fungal issues, especially in heavy clay soil—so make sure that water drains well. A happy, hydrated young cornflower becomes a thriving, flower-filled adult!