Do you need to fertilize the orchids that have just emerged?
Orchids are representatives of elegant flowers, and their nutrient management from the formation to full bloom stage directly affects the flowering quality. Mastering fertilization strategies at different growth stages can not only avoid fertilizer damage but also improve flowering performance. This article analyzes the key points of orchid maintenance through three critical periods to help flower friends achieve precise fertilization. Key points for nutritional management of orchid growth cycle fertilization judgment standards during flower arrow extraction period When transparent crystalline tissue (commonly known as "crystal head") appears on the top of new orchid buds, it marks the beginning of flower arrow formation. Three observations are needed at this time: 1. Leaf fullness: Oily and shiny leaves indicate sufficient nutrient reserves 2. Pseudobulb status: The diameter of the plump and expanded pseudobulb should reach more than 1.5cm 3. Root health: If the proportion of silver-gray air roots exceeds 80%, fertilization can be suspended if the above conditions are met. On the contrary, it is recommended to spray 0.02% potassium dihydrogen phosphate solution every 15 days to stimulate flower bud differentiation with a temperature difference of 10℃ at night. Nutritional supply plan during the bud development period, focus on monitoring the development progress after the bud is formed: ·Healthy bud should grow by 2-3mm every week·The bud coat should be full and spindle shape, which is a normal shape. If the bud tip dries or stagnates growth, use "Sandwich Top dressing method": 1. Spread 0.5cm fermented pine phosphorus grains on the surface 2. Mixed bark and 5% bone meal in the middle layer 3. Placing a ceramsite drainage layer at the bottom and spraying brassinolide (concentration 0.01ppm) once a week can effectively promote the expansion of flower buds. Principles for scientific fertilizer control in full flowering period should be established during the blooming period: ·No root irrigation: avoid salt accumulation and damage to new crystal roots·No solid fertilizers: prevent substrate heating and causing buds to disappear. Do not spray foliar fertilizers: Avoid the risk of petal burns under special circumstances: place a slow-release nutritional bar containing humic acid 20cm away from the plant to slowly release nutrients through air humidity. Precautions for full-cycle maintenance of orchids Implement the "Four-Look Fertilization Method" to improve the success rate of maintenance: 1. Look at the variety: Spring orchid requires 30% less fertilizer than Cymbidium 2. Look at the season: The fertilizer concentration in spring and autumn is 50% lower than that in summer 3. Look at the plant material: The fertilization frequency of water moss substrate should be 40% less than that of bark substrate. Look at the environment: Stop all topdressing when the humidity is lower than 60%, establish a maintenance log, record the date, type and plant response of each fertilization, and gradually form a personalized fertilization plan.
Scientific fertilization is the core technology of orchid maintenance. By observing plant morphological changes and formulating dynamic fertilization strategies can not only avoid fertilizer damage but also improve flowering quality. It is suggested that flower friends establish periodic observation records, adjust conservation programs in combination with environmental parameters, and finally achieve the conservation goal of annual flowering of orchids.