Can overnight tea be used to water plants?
Abstract: This article introduces the knowledge of home flower cultivation, whether overnight tea can be used to water plants, and shares the detailed content below.
The topic we are going to understand is a common question: Can overnight tea be used to water plants? This question actually has no scientific basis to explain the results, at least there is no authoritative explanation available yet. Whether overnight tea can be used to water plants, and whether it is beneficial or harmful to the plants, although there is no scientific verification, we can reason it out from common sense.
Let's first look at a material, an article from the Yangtze River Daily titled "5 Types of Common Tea Remain Unchanged Overnight: Overnight Tea Should Be Consumed in Moderation but Has Great Uses." The article scientifically tested green tea (maojian), black tea (jinjunmei), dark tea, jasmine tea, and tartary buckwheat tea. According to the test results, after 12 hours, the pH value of the tea water only had a minor change. The specific data is as follows:
PH Value Test
Green Tea Black Tea Dark Tea Jasmine Tea Tartary Buckwheat Tea
freshly brewed: 6.43 5.20 6.61 5.91 6.77
After 12 hours: 6.10 5.50 5.13 5.77 6.71
Test results: The pH value of each type of tea water is generally between 5.2 and 7.0, all of which are weakly acidic and have not reached the level of spoilage.
So based on this test result, we can conclude that tea water is weakly acidic, which is good news for plants that prefer weakly acidic soil, but bad news for plants that prefer alkaline soil.
In addition to the above experimental data, we have also seen some experiences of flower enthusiasts. Some have said that they have used overnight tea to water their plants and have not noticed any adverse effects.
In summary, we recommend that flower enthusiasts use overnight tea to water plants, but it's best to use only the tea water and not pour the tea leaves into the pot. Also, although overnight tea water can be used to water plants, it should be done according to the actual dryness of the potting soil and not ignore the moisture level, which could ultimately lead to waterlogging and root rot.
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