What to Do When the Leaves of the Desert Rose Turn Yellow and Fall Off
The desert rose is loved for its unique shape and vibrant flowers, but the issue of yellowing and falling leaves often困扰s enthusiasts. This article systematically analyzes the four major core maintenance misunderstandings and provides practical solutions based on 20 years of gardening experience.
Temperature Regulation: Preventing Frost in Desert Roses
Regional Difference Management Method
Areas north of 30 degrees north latitude need to be moved indoors by mid-October, using a double-layer glass and floor heating pad combination for insulation; the Yangtze River Valley can use transparent insulation covers for outdoor overwintering. If frostbite has occurred, immediately cut off the blackened stems and water with warm water at 25°C to revive the roots.
Light Optimization: Enhancing Photosynthesis Efficiency
Selection of Supplemental Lighting Equipment
If there is less than 4 hours of direct sunlight per day, artificial light sources should be supplemented. It is recommended to use full-spectrum plant lights, placed 50 cm away from the plant for 6 hours of supplemental lighting each day. In spring and autumn, you can rotate the pot to ensure even light exposure on all sides and prevent crown bias.
Water and Fertilizer Management: Dry and Wet Cycle Control Method
Irrigation Golden Formula
Use the "weight-checking method": water thoroughly when the pot is 1/3 lighter in spring, and 1/4 lighter in summer. Fertilization should follow the "three dos and three don'ts" principle: use slow-release fertilizer, use phosphorus-potassium fertilizer, use trace elements; do not use raw fertilizer, do not use concentrated fertilizer, and do not use foliar fertilizer.
Disease and Pest Control: Biological Control System
Ecological Control Combination
Regularly spray neem oil plus Bacillus subtilis solution to establish a protective layer. If scale insects are found, they can be physically removed with 75% alcohol cotton swabs, while root rot requires replacing the substrate with a new mix of peat soil and volcanic rock, 7:3.
By establishing a four-dimensional protection system for temperature, light, water and fertilizer, and disease and pest control, combined with regular observation log records, the desert rose can recover its glossy leaves and bloom again with the splendor of the flower of the desert.