What to Do When茉莉花 Leaf Turns Yellow
Jasmine leaves turning yellow is a common issue in the maintenance process, which not only affects the ornamental value but also serves as a distress signal from the plant. This article systematically analyzes the 5 key causes and provides actionable solutions to help gardeners quickly diagnose the problem and restore the jasmine's lush green.
Essential Points for Water Management
Diagnosis Features of Waterlogging and Root Rot
Faded and dull young leaves accompanied by withered new branches, and the potting soil remains moist for more than 3 days require immediate cessation of watering and loosening of the soil. It is recommended to use a ceramic pot with 30% perlite improved substrate. When severe waterlogging occurs, use a bamboo skewer to puncture air holes in the soil layer.
Remediation Plan for Yellow Leaves Due to Water Deficiency
When old leaves fall from top to bottom, use the immersion method to water: soak the pot in a bucket of water until no bubbles appear, then drain and cover with a plastic bag to maintain humidity for 2 days. For daily maintenance, insert a hygrometer to keep the soil moisture at 40-60%.
Balance Rule for Nutrient Supply
Process for Treating Fertilizer Burn and Yellowing
When new leaves appear with brown spots, immediately flush the roots with clean water for 3 consecutive times and prune the damaged leaves. Switch to a water-soluble fertilizer containing humic acid (diluted 2000 times), applying twice a month to repair the roots while supplementing trace elements.
Guide for Identifying Deficiency Symptoms
Uniform yellowing of leaves with green veins indicates iron deficiency yellowing. Use chelated iron (EDTA-Fe) solution for foliar application, combined with ferrous sulfate solution (1000 times diluted) for root watering, once a week for 3 weeks for effectiveness.
Key Techniques for Environmental Regulation
Soil pH Adjustment
Test the soil pH value monthly, and when it is higher than 6.5, adjust with lemon acid water (1g per 2L). When repotting, use a mixture of peat soil: pine needle soil: river sand = 5:3:2, adding 5% sulfur powder to maintain an acidic environment.
Accurate Control of Light and Temperature
Ensure 6 hours of direct sunlight in spring and autumn, and filter 50% of sunlight with a shade net from 10:00 to 15:00 in summer. Maintain a nighttime temperature of ≥8°C in winter, using a double-layer insulation shed plus supplemental lighting to prevent yellowing due to low temperatures.
By systematically checking the four elements of water, nutrients, soil, and light, and combining seasonal maintenance strategies, the yellowing issue of jasmine can be completely resolved. It is recommended to establish a maintenance log, recording the watering and fertilizing times and the plant's responses, to gradually master the precise maintenance rhythm and keep the jasmine green throughout the year.