Tap water often has added chemicals as it’s treated and recycled for human consumption. Carbon dioxide, when it combines with other minerals in the atmosphere, imparts to rainwater an acidic pH. Rainwater has a higher level of oxygen and is free from harmful minerals and additives found in tap water, according to Texas A&M University. Most plant roots like acid water as it makes the minerals more available at the resulting lower pH (lower pH means more acid). I had somewhat better luck outdoors in the garden, but little did I know that the potted plants were really suffering from the salt, chemical, and mineral buildup of tap water. Rainwater captures the dust carried on air currents and delivers it to the soil. Shawna Kennedy has been writing and editing professionally since 2004. Rainwater frees nutrients and minerals in the soil the plant needs to survive. Passive systems to conserve and collect water in your soil are also helpful. It might not come as a surprise that there's no water plants love better than rainwater. Frequent exposure to acid rain kills plants. Rainwater is slightly acidic—naturally! 1. Plants typically absorb most of their nitrates from the soil. Thank you BlueBarrel!". Read More... Upcycle a used 55-gallon plastic barrel into a back-yard compost tumbler! Plants have very unique ways of gathering moisture from the air and delivering it to their root zones. As the soil absorbs rainwater, a film forms around soil particles, according to Bellevue College. City water, on the other hand, is treated to be alkaline to protect metal pipes from corroding, and can have a pH level upwards of 8.5. Several factors, such as heat, the sun and type of plant, determines the transpiration rate and the amount of water each plant needs. The acidic nature of this rainwater dissolves and removes the nutrients in the soil and increases minerals that are harmful to plants. Environmental Protection Agency: What is Acid Rain. ", "We love our system and BlueBarrel’s staff and instructions made it so simple that my son and I completed the project in no time with absolutely no plumbing skills whatsoever! Inventory is limited in some regions.]. [BlueBarrel is still fully operational. She's published numerous articles online and two of her edited manuscripts have been contracted and published by Random House. Actual rainwater has acidic qualities; whereas, tap water is somewhat chalky in nature. While the water is very clean and should run clear, it has been exposed to anything on your roof. Read on to learn about rainwater for gardens! You can use rainwater in watering cans to water plants by hand. Related Post: The Many Benefits of Houseplants, Related Post: Capturing Rainwater for Household Use. I thought it was just my imagination. Clemson University: Why Plants Need Water, Michigan State University: Water and Plant Growth, Bellevue College: Plant Nutrients and Soil, Texas A&M Rainwater Harvesting-Rainwater Basics, Environmental Protection Agency: Effect of Acid Rain – Forests. Read on for a full review of their BlueBarrel installation project. "I have been sharing my joy over my BlueBarrel System. Rain! Stored rainwater contains some organic matter. Read More... Our downspout diverter automatically directs system overflow down through the existing downspout, but there’s so much more you can do with that precious excess rainwater including: transporting, infiltrating, and storing it. Filters are essential and can be installed at various points in your rainwater … Sign up to receive a 10% Welcome Discount! As I look out my office windows this morning at the flower garden, the plants look greener, perkier. At this time of year, your rain barrels are probably full! Why is rainwater such a preferred water source? Offer expires November 30; valid while supplies last. In fact, lots of growers will not use unsterilized tap water at all, because they just feel it doesn’t bring a good level of quality for plants. The experts agree...all water is not created equal. Carbon dioxide is also brought down to Earth to the benefit of plants when it rains. Imagine your thirsty plants doused in droplets fallen fresh from the sky, their leaves expertly channeling the bounty down stalks and into the soil—right to the root zone where it is needed most. Greywater (once-used household water from a laundry machine, shower, or bathroom sink) will start with the same pH as your tap water, but can have a pH as high as 10.5 once it gets to the garden depending on the types of soaps and detergents that are in it. Read More... Elsa and Tyler of Flora Noble Plant Studio share their DIY experience setting up a 2-barrel rain catchment system in Milwaukee, Oregon. Rainwater is 100% soft water. Plants are autotrophs or obtain all the nutrients they need from the environment around them. 2. But in colder climates, we have a few expert recommendations for winterizing rain barrels. Roots then absorb these particles in a process called diffusion. ‘Normal' rainwater acidity can be very beneficial for plants (though "acid rain" tends to have a bit too much to be good for growing things). A gravity fed drip line allows me to apply rainwater directly to my in-ground garden with no effort at all. 3. A rain barrel hosts a beneficial biology to keep the water alive - literally. Nitrates, which are made up of nitrogen and oxygen, are formulated by nature for maximum uptake by your plants. The cells then convert the sugar into energy, which the plant uses to produce leaves, flowers and fruit. As an added bonus, plants are then able to absorb more water, which reduces their overall need for irrigation. This dust contains important minerals and microorganisms that contribute to the breakdown of organic compounds into plant nutrients. This plant list provides a good starting point to help you become familiar with some native plants that are good for rain gardens. And where do those nitrates come from? As more water is lost, the plant will fail and eventually die. And what a difference it makes. Is rain water better for plants than ground water? All rights reserved. Rainwater is generally an excellent source of irrigation for plants. Rainwater contains nitrate - the most bio-available form of nitrogen. In addition, the plant uses water alongside photosynthesis to make sugar. Acid rain is common after volcanic eruptions or when excessive amounts of sulfur dioxide or nitrogen oxides are released into the air from fossil fuel combustion, according to the U.S. Environmental Protection Agency. Copyright © 2020 BlueBarrel, LLC. It’s not an old-wives' tale; rainwater really is better for growing plants than water from a hose.
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