Although the Dianella does well when planted in shady locations, it does best when it receives full or partial sun for most of the day. It requires consistently moist soil during its first growing season. This helps it establish the strong, deep root system that allows it to tolerate drought conditions later in its life. In its second and subsequent seasons, water it only during periods of extreme drought. The ideal time to fertilize Dianella is just before it produces new spring growth. To avoid burning it, don�t place the fertilizer too near the base of the plant or allow it to drop on the foliage. Use the hose to wash away any fertilizer granules that land on the leaves.