Why do azaleas and gardenias always have yellow leaves?
Are you curious about the gardening experience related to the yellowing of azalea and gardenia leaves? Here is a detailed introduction below.
The most troublesome aspect of growing potted gardenias and azaleas is the alkalization of the potting soil, which causes yellow leaves and may even lead to wilting. Today, I will share several simple methods with you to turn your alkaline soil back to acidic, allowing your azaleas and gardenias to grow flower buds.
1. Lemon Acid Water
Soaking lemon slices in water sounds sour, and many people can't get used to the taste, but using this method to water plants can also adjust the pH level of the potting soil.
Place lemon slices in clear water to soak and then expose them to direct sunlight outside to ferment.
After soaking, dilute the lemon acid water with water and use it to water the plants, which can neutralize the soil's alkalinity and keep the potting soil slightly acidic.
2. Lemon Acid
If you find soaking lemons in water troublesome, you can use lemon acid instead. Buy some lemon acid and add a little bit each time you water the plants.
Why do azaleas and gardenias always have yellow leaves?
If you're not sure about the amount, you can buy some pH test strips to ensure the pH value of the diluted lemon acid water remains around 5.5 for use.
Lemon acid water can also adjust the pH level of the potting soil.
3. Fruit Acid Water
When you often eat fruit at home, there will be some fruit peels or spoiled fruit that you can collect, ferment with rice washing water, and use to water plants, which can also effectively adjust the soil pH.
4. Sulfur Powder
The best way to maintain acidic soil for growing acid-loving flowers is to use long-acting acidic fertilizers, such as sulfur powder.
Before planting, mix sulfur powder into the soil and stir evenly. Usually, 1-2 grams of sulfur powder per liter of soil is enough.