When does the hollyhock planted in spring bloom
Among the garden flowers, hollyhock is very popular for its tall and straight flower stems and gorgeous colors. This mallow plant needs to go through a complete growth cycle from sowing to blooming. Mastering its planting time and maintenance skills can allow plants up to three meters high to produce more spectacular flower ears. Growth cycle and flowering regularity of hollyhock The best time for spring sowing is early spring, the soil is thawed, and the grain rain solar term (March-April) is the best sowing time. At this time, the ground temperature is stable above 15℃, and the seed germination rate can reach 90%. Greenhouse seedlings can be adopted in the Yangtze River Basin in late February. Under normal maintenance of the flowering Timeline, spring-sown hollyhock buds appear in early June, and its full flowering period lasts until late August. Observation data in recent years show that due to the large temperature difference between day and night in the northern region, the flowering period is 10-15 days longer than that in the south. Nutritional management plan for key points in flowering control of hollyhock is applied every half month during the bud stage, phosphorus and potassium fertilizers (N-P-K=5-10-15) are used together with decomposed sheep manure to improve the soil. During the peak flowering period, use foliar spraying potassium dihydrogen phosphate (0.2% concentration) to avoid the risk of root burning. Temperature and humidity control to maintain the day temperature of 25-28℃/night temperature of 18-20℃ is most conducive to flower bud differentiation. Maintain 60% air humidity through morning and evening spraying, and combine with ceramsite paving to prevent water accumulation and rot roots. Light adjustment techniques require sufficient scattered light during the bud coloring period, and use a 50% sunshade net to protect it at noon. Potted plants can receive direct light for 3 hours in the morning and evening to promote bright colors. Answers to frequently asked questions on hollyhock maintenance In view of the decrease in flower quantity, it is recommended to prune old branches and apply winter fertilizer in late autumn. Biennial plants need to be divided into different branches to avoid root aging affecting flowering quality.
Through scientific management, hollyhock can not only achieve the expected flowering effect, but also achieve secondary flowering on National Day by adjusting the sowing time. Recording maintenance logs, combined with local climate fine-tuning management plans, can allow this "Dragon Boat Festival flower" to bloom in a more amazing summer glory.