The reason why the leaf tips of Clivia are yellow and dry
As a good indoor leaf viewing product, dry and yellowing of clivia leaf tips is a common problem during the maintenance process. This not only affects the ornamental value, but also sends a distress signal from the plant. This article will help you systematically grasp the causes and treatment plans of yellow leaves through four core maintenance dimensions. 1. Imbalance of water management 1.1 Seasonal differences in watering amount It is necessary to keep the substrate moist during the spring and autumn growing period. It is recommended to use immersion basin method to replenish water (the water level reaches 1/3 of the basin height). During the winter hibernation period, the water should be controlled to a state of "dry and wet", and then watered thoroughly when the soil hygrometer shows ≤30%. 1.2 The use of ceramsite bedding + pine needle soil (accounting for 40%) to prevent and control stagnant water and root rot can improve the permeability of the substrate. When the leaf tips are found to be soft and drooping, the rotten roots should be removed immediately, soaked in potassium permanganate 1:2000 solution for 30 minutes, and then replaced with new soil. 2. Abnormal nutrient supply 2.1 Identification of fertilizer damage characteristics When the leaves appear with ringed spots or the leaf tips are scorched, it is mostly due to excessive nitrogen fertilizer. Emergency treatment requires watering clear water (water temperature 25℃) for three consecutive days, and the amount of water each time is twice the volume of the basin. 2.2 Scientific fertilization cycle Apply 1000 times diluted orchids special fertilizer (N-P-K=20-20-20) every month during the growth period, and stop fertilization in winter. Supplementing chelated iron fertilizer when new leaves are unfolded can prevent iron-deficient yellowing. 3. Key points of light control: Clivia is suitable for scattering light at 5000-8000lux, and a sunshade net is needed in summer (50% shading rate). When sunburn spots appear on the leaves, they should be moved to the north-facing window sill in time and restored with leaf spray in the morning and evening. 4. Comprehensive disease control 4.1 (T-J) Brown dots appeared on leaf tips at the early stage of disease diagnosis, and expanded into concentric ring spots in the later stage. Remove the diseased leaves immediately and apply plant ash to the wounds. 4.2 The chemical control plan alternately uses 25% prochloraz emulsifiable concentrate (diluted 1500 times) and 80% mancozeb (diluted 800 times), sprayed once a week for 3 consecutive weeks. Cooperate with the installation of circulation fans to maintain air circulation (wind speed ≤1m/s).
By systematically regulating the four major elements of water, fertilizer, heat and heat, and regularly rotating the basin (rotating 180° every 15 days) to maintain plant type symmetry, your Clivia will surely be able to regain the healthy state of straight sword leaves and shining oily green.