yellow flag

Yellow Flag plants need to be watered regularly throughout the growing season. The best way to water them is thoroughly and at ground level. During the growing season, which typically lasts from April through September, Yellow Flag plants need to be watered deeply every week or 2. Water slowly and deeply - make sure the water penetrates the soil all the way to the roots. During the hottest months, Yellow Flag plants may require more frequent deep waterings. It is important to water yellow flag plants consistently, as they are prone to damage from both dryness and overwatering.

Yellow flag (Iris pseudacorus 'Sun Cascade') plants prefer full sun and at least 6 or more hours of sunlight every day in order to thrive. When grown in full sun, the foliage of yellow flag plants will be greener and sturdier than those grown in partial shade. Additionally, the yellow blooms of the plant will be fuller and more abundant when exposed to plenty of sunshine. When the weather is hot, however, yellow flag plants need some afternoon shade to prevent burning of the leaves.

Yellow Flag Iris, otherwise known as Iris pseudacorus 'Sun Cascade', should be pruned after blooming is complete, usually in late summer (August/September). Pruning helps to keep the iris tidy, and prevents overcrowding. Start by cutting back any dead or diseased foliage first, then prune away any weak or thin growth down to the base. Any plants that have flowered and are overcrowded can be divided by digging up the plant and separating its rhizomes. Once the pruning is complete, apply a slow-release fertilizer to help promote new growth.