Overwatering can be an equally effective killer of young roots, but with a well-drained soil this is harder to accomplish.
Young plants and seedlings need to maintain adequate moisture to prevent any of their few new roots from drying up and not recovering. Overwatering can be an equally effective killer of young roots, but with a well-drained soil this is harder to accomplish. We need to think of plants as living creatures that need tending, especially young plants. Once plants are established they are very resilient to various extremes. Regular watering from a sprinkler, drip hose, or by hand will result in healthy productive plants.