When does the iris bloom?
Iris, known as the "Rainbow Goddess," is favored by gardening enthusiasts for its unique butterfly-shaped petals and rich colors. As a perennial herb, its flowering management and maintenance directly affect the flowering quality. This article will analyze the flowering season to full-cycle maintenance strategies, and take you to systematically grasp the essence of iris cultivation. Analysis of the seasonal characteristics of the Iris flowering period Typical flowering period and variety differences Iris natural flowering period is concentrated from April to June. Early spring varieties such as German Iris can bloom at the end of March, while Siberian Iris can last until early summer. The difference in florescence between different varieties can reach 2-3 weeks, and bulbous species such as Iris hollanis mostly entering full bloom in late April. Environmental factors affect temperature and light, which are the core factors: flowering is most prosperous when the average daily temperature is 15-20℃. Due to the later warming up in spring in the northern region, the flowering period is usually 10-15 days later than in the south. In high-altitude areas, flowers can be bloomed 2 weeks earlier through film mulching technology. Guidelines for full-cycle maintenance of iris during flowering period Intelligent control of temperature and light to maintain a golden temperature band of 17±2℃ during flowering period, and use sunshade nets to adjust the light intensity to 20,000 - 30,000 lux. Ensure 3 hours of direct light in the morning, and use a sunscreen net with 50% light blocking rate to protect petals at noon. Precise water management implements the "see dry and see wet" irrigation method to maintain soil moisture at 40-60%. A drip irrigation system is used to supply 0.5-1L/plant per day, combined with morning and evening leaf spraying, and the air humidity is controlled within the range of 65%-75%. Nutrient supply continues to increase the application of phosphorus and potassium fertilizers (N:P:K=1:2:3) during the flower bud differentiation period, and use slow-release fertilizer after buds appear. Spraying 0.2% boric acid solution on the leaves every 10 days can extend the flowering period of a single flower by 3-5 days.
Through scientific environmental control and fine maintenance, the flowering period of a single iris plant can be extended to 25-30 days. It is recommended to establish a maintenance log to record temperature, humidity and fertilization data, and dynamically adjust the management plan based on plant performance, so that this "flying flower" can bloom with the most brilliant vitality.