When does the chrysanthemums bloom?
As one of the top ten famous traditional flowers in China, Chrysanthemum has always been the focus of horticulture enthusiasts for its unique flowering characteristics and maintenance skills. This article will take you to comprehensively understand the flowering rules of chrysanthemum and its flowering control methods through detailed graphic analysis. Detailed explanation of the flowering time of chrysanthemums. Autumn chrysanthemum varieties account for the mainstream of the market. They generally bud in mid-to-late September and enter the full flowering period from October to November. Traditional varieties such as golden chrysanthemum and black chrysanthemum in Beijing mostly bloom before and after the frost, forming a spectacular scene of "the city is full of golden armor." The special variety of flowering summer chrysanthemum (May chrysanthemum) has the characteristics of double flowering and opens in May and September of the lunar calendar respectively; cold chrysanthemum (winter chrysanthemum) has strong cold resistance and its flowering period can last until January of the following year. New varieties such as Dutch chrysanthemums and cut chrysanthemums introduced in recent years can achieve annual flowering through facility cultivation. Four Elements Photoperiod Control Technology for Chrysanthemum Flowering Period Control Chrysanthemum is a typical short-day plant. It requires 14 consecutive hours of darkness every day to differentiate into flower buds. Professional cultivation uses a double-layer shading curtain system and a smart light controller to advance the flowering period by 45-55 days. For home maintenance, black plastic bags can be used to strictly block the light from 17:00 every day to 8:00 the next day. Nutritional management strategy Topdressing potassium dihydrogen phosphate (concentration of 0.2%) during the bud stage can increase the flower diameter, and the best effect is 3 sprays at an interval of 10 days. Note that the ratio of nitrogen, phosphorus and potassium should be controlled at 1:2:3. Excessive application of nitrogen fertilizer will lead to the phenomenon of "luxuriant leaves and sparse flowers." The water stress flower promotion method maintains the substrate moisture content of 40%-50% during the flower bud differentiation period, and creates moderate drought stress through the water control method of "seeing dry and seeing wet". Combined with foliar spray to maintain air humidity above 70%, it can stimulate rapid differentiation of flower buds. Plant shaping key points Carry out the first picking 15 days after planting, retaining 4-6 true leaves. The "three-level bud thinning method" is implemented during the budding period: the main bud is retained and the side buds are gradually removed in three times to ensure nutrient concentration (G-Y). It is recommended to retain 3-5 flower buds per branch for potted chrysanthemums.
Mastering the flowering rules of chrysanthemums requires combining variety characteristics and cultivation techniques. Through precise control of light, warm water and fertilizer, you can not only enjoy the natural landscape of "autumn chrysanthemums proud of frost", but also achieve the cultivation goal of "enjoying chrysanthemums all year round." It is recommended that growers establish a maintenance log to record the phenological period of each variety and gradually form a personalized flowering control plan.