Can the tap water just turned on be used to water flowers? Detailed explanation of watering techniques for various flowers.

Is tap water suitable for watering plants?For most people, tap water can be used to water plants, as well as some small experiences in green plant maintenance that involve watering techniques and detailed explanations, as follows:Do not water gardenias with tap water right away.Gardenias may turn yellow over time. If the leaves are dark with brown rot spots, it might be due to excessive watering or a stuffy, poorly ventilated environment. However, if the leaves are dull and yellow with dark veins, it might be because the water is too alkaline.Image: Yellowing due to excessive wateringImage: Soil alkalization causing yellowingLook at the scale in your kettle; the more scale there is, the more alkaline the water. Using tap water to water gardenias right away can cause the soil to rapidly alkalize, especially if watered every day. The plant may turn yellow within a week.It is recommended to let tap water sit for 1-2 days before watering gardenias, or use cool boiled water, rainwater, aquarium water, or condensation from air conditioners, all of which are better than tap water. If necessary, you can dilute sulfuric iron once a month to slow down the alkalization process.Is tap water suitable for watering plants?Do not water Chinese roses at noon.Chinese roses love sunlight and are generally placed in sunny areas for cultivation. It is important to note that when temperatures exceed 28 degrees Celsius, especially in the middle of the day (11:00-16:00), it's best not to water them. This is known as "noon water," which can kill the plant.Because from 11 am to 4 pm in the summer, the temperature is high, and everything is scorching hot. If you water at this time, the hot and cold contrast can severely shock the plant's roots, leading to poor respiration, difficulty in absorbing water, and even root rot in severe cases.Water Chinese roses in the morning or evening, before 10 am or after 6 pm. These times may vary depending on the location, but it's best to water during cooler periods. If you have to water at noon, let the water sit in the sun first, then slowly sprinkle it around the plant to cool it down before gradually watering or drip-irrigating.