The Latest Complete Guide to Iris Cultivation Methods
Iris, also known as Alice, is a perennial herbaceous plant of the genus Iris in the family Iridaceae. Its flowers are large and beautiful, and its leaves are fresh and green, giving it high ornamental value. Many species are used for garden ornamentation; in landscaping they can be used to create flower beds, planted in wet furrow land, at poolside and lakeside, or arranged into a specialized iris garden, and can also be used as cut flowers and ground cover plants. Now let us take a look at the cultivation methods for iris!
Growth Habits of Iris
There are many varieties of iris, and their growth habits differ slightly, but they can be roughly divided into two categories. The first category of iris has thick and sturdy rhizomes and strong environmental adaptability, is drought-tolerant, and grows well under conditions of sufficient light, good drainage, and appropriate amounts of fertilizer and water, such as Iris germanica, Iris tectorum, and Iris pallida. The second category of iris prefers moisture and grows well in moist soil or shallow water, with Iris pseudacorus, Iris ensata, and Iris japonica being representatives of this category.
Variety Classification of Iris
1. Aquatic: Iris sanguinea, Iris ensata, and Iris laevigata are all moisture-loving iris flowers. These flowers are excellent materials for waterside greening and are often used in specialized gardens, flower beds, waterside arrangements, and cut flower cultivation.
2. Xerophytic: Iris lactea and Iris pseudacorus have extremely strong adaptability to soil and moisture and can withstand drought. These flowers are mostly used as ground cover and border plants.
3. Mesophytic: Iris tectorum, Iris japonica, Iris germanica, and Iris pallida prefer to grow in well-drained soil with moderate moisture. These flowers are very widely used and can be planted in specialized gardens, flower beds, flower borders, and as ground cover.
Cultivation Methods for Iris
1. Propagation: Iris is usually propagated by division or cuttings, and can also be propagated by seeds. Division propagation is mostly carried out during the dormant period in early winter or early spring, cutting propagation is mostly done in spring, and sowing is done immediately after the seeds are harvested.
2. Soil: Iris grows poorly in acidic soil, so when cultivating iris you should choose humus-rich clay loam, or an alkaline soil mixed with lime. Before planting, the soil should be thoroughly plowed, and decomposed compost with a small amount of bone meal, plant ash, etc. should be applied as base fertilizer. In addition, iris should not be planted too deep, and the rhizomes should be pressed firm.
3. Temperature: The optimal growth temperature for iris is 15-17°C, and it likes a sunny and moist environment. However, if the light is too intense, appropriate shading should be provided, and if the humidity is too high, it can be reduced by heating and ventilation.
4. Watering: After planting, iris should be given one thorough watering, and afterward watering can be done according to the dryness and moisture of the soil, generally with the soil slightly dry being preferable. Do not let the soil become waterlogged or remain overly wet for a long time, to avoid root rot or disease. To keep the plant looking attractive, the leaves can be washed.
5. Fertilizing: From spring sprouting and growth until before flowering, iris should be given 1-2 applications of decomposed dilute cake fertilizer water or compound flower fertilizer, and after the flowers fade it is best to apply liquid fertilizer once more.
6. Disease Prevention: The main disease that iris is prone to during cultivation is soft rot. If the plant is found to have soft rot, it should be dug up promptly, the rotted parts removed, and the planting site changed or the pot replaced for transplanting. The main pest of iris is the bean chafer; control is mainly carried out by manually catching adults and poisoning larvae. Between April and May, iris can be drenched with a 250-fold dilution of 25% wettable imiphos-methyl to prevent damage from underground pests. In winter, dead leaves should be cleaned up and branches destroyed, which can also reduce the occurrence of iris pests and diseases.