![]() ![]() They are ideal for growing in pots sunken into fishponds. They will even grow and bloom in standing water. Louisiana Iris will always produce best if given lots of water. These Iris respond well to deep watering rather than a mere “sprinkling.” Drip irrigation can be very effective. Once established they will grow and bloom in a normal perennial bed or border. Upon being planted, young rhizomes need to be kept constantly moist for at least one week. While Louisiana Iris will tolerate moderately dry conditions for short periods of time, they should never be allowed to dry out completely. ~The above culture information adapted from The Society for Louisiana Iris website The offsets represent vegetative reproduction and are identical in every respect to the parent rhizome. Good growth and offset formation are, therefore, necessary each season for consistent bloom. Each rhizome blooms only once, then the offsets bloom the next year. ![]() Iris grow in the direction they face at least two offsets generally form each year, one on each side of the rhizome. Planted in a triangular format (about 12 inches apart), they can be left 3 to 4 years and will form nice clumps. Do not allow the newly planted beds to dry out water every few days until the plants are established. Replant as soon as possible, preferably the same day. If existing beds are to be divided and replanted, dig out all the Iris and rework the beds, adding organic materials and a commercial fertilizer. Transplanting immediately after blooming is not recommended. The best time to plant and divide Louisiana Iris is mid-to-late August and September. ~Culture information adapted from The Society for Louisiana Irises ![]() Such beds should be at least six inches deep. Louisiana Iris grow quite well in beds that have been lined with plastic. These Iris will also grow well in a soil with high organic matter content, as long as it is moist they suffer considerably when growing in sandy soils unless copious amounts of organic matter are added. Indeed, clay soils retain moisture over a long period, which Louisianas love. Louisiana Iris evolved in the lowlands of the southern Mississippi delta, and thus they tolerate heavy clay soils. The best advice is to avoid both pH extremes. The old belief that these irises preferred a highly acidic soil has been disproved. ![]() Louisiana Iris tolerate a wide range of soil types and acidity levels. If you have a low area in your garden where water stands for long periods, you probably have a good place to grow Louisiana irises-assuming you have adequate sunlight. In hot climates, and in the desert southwest, afternoon shade would be good. They bloom best with six to eight hours of sunlight per day. Like most Iris, Louisianas need sunlight in order to prosper. In colder regions of North America they should be planted early enough in the autumn so the roots can get established before the onset of cold weather. In warmer climes these tough Iris can be planted at just about any time, assuming you provide adequate water and protection from the hot sun. After planting keep them moist, not allowing the rhizomes to dry out. Use a general fertilizer such as 10-20-10. Keep the tops of the rhizomes one inch below soil level. When you receive your rhizomes, soak them in water overnight before planting. ![]()
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