The Dangers of Using Orange Peel to Water Plants
In recent years, it has been popular in the home gardening community to use orange peel to create natural fertilizing water. However, this seemingly eco-friendly method of watering plants actually has many hidden dangers. This article scientifically analyzes the characteristics of fermented orange peel liquid and systematically explains its impact on different plants, helping gardening enthusiasts avoid common mistakes.
Double Impact of Fermented Orange Peel Liquid on Plants
Overnutrition Leading to Root Burning
Fresh orange peel contains 2.3% citric acid and various volatile oils. After 30 days of fermentation, tests show that the nutrient content in the fermented liquid can reach 1200ppm, far exceeding the standard for regular liquid fertilizers. Experimental data indicates that using it undiluted directly can cause the soil EC value to surge by 3 times, leading to the dehydration and death of fine roots.
Special Mechanism of Acid-Base Regulation
PH test strips show that the PH value of the finished fermented liquid stabilizes between 4.5-5.2. Continuous application can increase the rate of soil acidification by 40%. This characteristic is beneficial for acid-loving plants like blueberries and gardenias but can disrupt the ionic balance of alkaline plants like flowering quinces.
Plant Spectrum Suitable for Orange Peel Fertilizing Water
List of Acidic Plants
• Rhododendron family: Western azalea, Azalea kurume• Camellia family: Camellia japonica, Camellia yunnanensis• Rutaceae family: Kumquat, Fingered citron• Special categories: Hydrangea (can change flower color by adjusting acidity)
Classification of Plants Not Suitable for Use
In addition to the wisteria and cacti mentioned in the original text, new additions include:• Caryophyllaceae family: Carnation, American pink• Cruciferous family: Ornamental kale• Specific succulents: Lithops, EcheveriaThese plants may experience calcium absorption difficulties in acidic environments, leading to leaf deformation.
Four Elements of Scientific Application
Control of Fermentation Period
In winter, the fermentation period needs to be extended to 45 days, while in summer, 25 days is sufficient. The end of fermentation can be determined by observing the complete disappearance of bubbles on the liquid surface.
Application Time Window
Apply during consecutive sunny mornings from 9 to 11 am, avoiding use during the rainy season when the soil is too wet. For plants like roses that bloom multiple times, stop using it before the bud differentiation stage.
Concentration Gradient Plan
Seedling stage (1:20) → Growth stage (1:15) → Flowering stage (stop using). Coordinate with EC pen testing to maintain the soil conductivity between 1.2-1.8 mS/cm.
Emergency Treatment Measures
If accidentally applied to alkaline plants, immediately flush with 5% lime water to neutralize, and increase light exposure by 30% for 3 consecutive days to promote metabolism.
Mastering the scientific use of orange peel fertilizing water can not only achieve the use of kitchen waste but also avoid plant damage. It is recommended that gardeners establish a plant acid-base preference profile and regularly test with PH test strips to truly bring out the value of natural fertilizers.