Start Watering Your Houseplants With Slightly Acidic Water

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Are you looking for a way to give your plants a boost? One simple and effective solution is to try watering them with slightly acidic water.

If you are new to this blog my name is Ashley and I am a soil scientist. I am located in a Canadian Zone 3 and a USDA Zone 4. I write articles, make YouTube videos, Instagram & Facebook posts all designed for Canadians and Cold Climate gardeners using science-based methods. If you are looking for anything specific be sure to let me know in the comments down below.

But why is slightly acidic water beneficial for plants?

First, it’s important to understand that the pH of soil can impact a plant’s ability to absorb nutrients. Most plants thrive in slightly acidic soil, with a pH ranging from 6 to 7. And as it turns out, watering your plants with slightly acidic water can also have benefits for their growth and nutrient uptake.

If you are growing hydroponically or in LECA this is an absolute must for healthy growth.

Studies Showing The Benefits

One study found that maize plants grown with slightly acidic water had improved root development and overall growth compared to plants grown with neutral or alkaline water. These plants also had higher nutrient uptake, particularly of phosphorus and zinc.

Not All Plants Are Equal

However, it’s important to note that the optimal pH of water for plants can vary depending on the specific species. Some plants, such as blueberries, prefer more acidic conditions, while others, like lilacs, prefer more alkaline conditions. So it’s always a good idea to do some research on the specific needs of the plants you’re caring for before adjusting the pH of your watering routine.

How To Make Slightly Acidic Water For Houseplants

  1. Get lukewarm water
  2. Add fertilizers and/or humic acid
  3. Allow this to sit for 30 mins minimum to ensure everything is dissolved.
  4. Test your water pH
  5. Now adjust the water using pH up or down. You could also use baking soda and vinegar is you are in a bind. A little goes a LONG way.
  6. Test your water pH again and repeat 5-6 until it is a 6.5
  7. Now feel free to store this water or water your plants

In general, watering your plants with slightly acidic water can be a simple and effective way to support their growth and health. So next time you’re reaching for the watering can, consider giving your plants a boost with slightly acidic water. Your green thumb (and your plants) will thank you.