Indoors, use warm water mixed with a dab of mild soap to clean the leaves of potted plants. If the surrounding temperature increases mildly above the tolerance level, some plants shed their leaves to cut down on the release of water. If the temperature reaches a certain temperature such as -7 degrees grass will freeze, but not die. Viz, Water, and Sunlight. Simple boiling water serves as alternative to pulling weeds. If a plant were take in water of a different temperature, the enzymes may … Students used rye plants to test the effects of hot water. I would say that it does, particularly if it's an extreme temperature. Additionally, higher temperatures and a lack of oxygen can cause an increase in harmful moulds (such as Pythium) and bacteria, and all the problems that associated with those. The first causality of hot weather is the loss of moisture from the plant as well as from the soil. When applied to soil, hot water can kill beneficial microorganisms essential to plant growth and damage shallow root systems. I would also like to know what tricks or techniques you have applied to combat this situation. The vegetative phase continues until the plant reaches a genetically determined maximum leaf number. If the temperature raised above 90 deg F, you might not receive the actual size of the tomato that you thought you will get. The NSRC concludes that plants may grow faster when watered with warm water, provided the water is not hot enough to damage root systems. It is important to understand how these factors affect plant growth and development. However, too much water can result in root rot. Mulch will also help in preventing outside heat reaching the soil and keep the soil cool. By creating an account you agree to the Hunker, Texas A&M AgriLife Extension: House Plants, Thrifty Fun: Killing Weeds with Hot Water, North Carolina State University: Watering Houseplants. Under controlled variables – including water amount, soil type, size of pot, seed type and sunlight exposure – Swang and his students watered three rye grass seeds with three different temperatures of water. Today I want to discuss another such important factor, temperature or heat. Some research, however, indicates that warmer – not boiling – water may have some beneficial effects on plant growth, even if those effects are minimal. At lower temperatures, the pump mechanism will not work as effectively, while at higher temperatures the plant is less able to take up oxygen from the water. Students used water at 36 degrees Celsius, 43 degrees Celsius and 55 degrees Celsius. The plant cycle is divided in vegetative and reproductive phrases. I hope most of you still have not faced this condition, but if you had, I believe this article might have been able to solve some of your questions.