Rose Pests and Control Methods
Roses, with their bright and droplet-like appearance, have become the favorites of gardens, but the invasion of diseases and pests often makes rose lovers suffer. This article deeply analyzes three common pests and helps you protect the health of roses through scientific control methods.
Beetles: The Hidden Killers of Plant Roots and Leaves
Analysis of Dual Harm Characteristics
Beetles cause damage in both adult and larval stages: adults eat young leaves to form sawtooth-shaped gaps, and larvae lurk in the soil to eat roots. When there are more than 20 insects per plant, it will lead to a reduction in photosynthetic efficiency of leaves by over 40%.
Three-Level Control System
1. Physical Control: Hang vibration-type insect-killing lamps (every 5 meters apart), best to turn on at dusk2. Biological Control: Plant repelling plants such as mint and rosemary3. Chemical Control: Use pesticides containing chlorantraniliprole, reapply after 7 days
Spiny蛾: Leaf Damage Experts
Seasonal Outbreak Patterns
June to August is the peak period, with the optimal breeding temperature between 25-30°C. The毒毛 carried by the insects can cause redness and swelling of the human skin, and protective gloves are required for handling.
Golden Time Axis for Control
December: Scratch off the overwintering cocoons on the branchesMarch: Spray lime sulfur mixture to clean the gardenJune: Hang sex traps to monitor insect density
Aphids: Plant Juice Plunderers
Chain Reaction of Pest Damage
The honeydew secreted by aphids can trigger sooty mold, reducing the photosynthetic activity of leaves by 60%. When the insect density reaches 50 insects per leaf, an emergency control plan needs to be initiated.
Ecological Control Solution
By establishing a pest and disease monitoring log and combining physical, biological, and chemical comprehensive control strategies, the incidence of pests can be effectively controlled. It is recommended to check both sides of the leaves monthly, detect and handle early, and let roses continue to bloom with healthy beauty.