Can You Water Carnivorous Plants With Spring Water?

Spring water is essentially groundwater that emerges to the surface naturally and is a perfectly good source of fresh water. The minerals in spring water make it excellent for people and hardy plants, but this isn’t the case for carnivorous plants. 

You cannot water carnivorous plants with spring water because spring water typically has more minerals than these plants can handle. Instead, water your carnivorous plants with collected rainwater or pure distilled water. You can also treat your water to reduce the salts and make it less alkaline. 

This article will examine what happens when you water carnivorous plants with spring water and the right kind of water for these plants. It will also explain how to treat water to use it to water carnivorous plants, so read on. 

What Happens When You Use Spring Water on Carnivorous Plants

Carnivorous plants are native to soils that are acidic and poor in essential mineral nutrients like calcium and magnesium, which is likely why they adapted to become carnivorous

Their adaptation to such conditions makes them extremely sensitive to the salts present in spring water which can also increase the alkalinity of the soil. Therefore, it is very easy for these plants to become overwhelmed by excess minerals

If you water your carnivorous plants with spring water, the minerals will build up in the soil over time. The mineral concentration leads to magnesium and calcium toxicity in plants, which affects their health and may even lead to death

Here are a few visible symptoms of mineral toxicity in your carnivorous plants:

  • Visible ‘burning’ on the foliage. Burning refers to brown and black spots or edges present on the leaves of plants. Excess mineral concentration leads to dehydration in carnivorous plants, which presents as burnt spots or edges. 
  • Stunted growth. There are many reasons why a plant may stop growing. Foliage or stems that start growth but wither away or remain small may be caused due to salt buildup in the soil. Excess salts block the pores in the roots and taint the nutrients in the soil, preventing the plant from receiving the nutrients it needs to grow. 
  • Root rot. Often caught last, root rot may indicate anything from excess watering to mineral toxicity. If you’ve been watering your carnivorous plant with mineral-rich water, then the root rot is likely due to salt buildup. The visible burning on the leaves results from roots rotting in the soil. 

These symptoms will continue to spread and kill your carnivorous plant if left unaddressed. 

Spring water isn’t the only culprit causing mineral toxicity in your carnivorous plants. The mineral levels in tap water are above the recommended percentage in most counties in the USA. It is also more commonly used by home gardeners to water their plants. 

Bottled water also contains concentrations of minerals that are perfectly healthy for human beings but toxic to sensitive carnivorous plants like venus flytraps. 

The Right Water for Carnivorous Plants

Spring water, bottled water, and tap water can all be ruled out when it comes to watering carnivorous plants. But what is the right kind of water? 

Carnivorous plants respond well to collected rainwater, as rainwater has lower mineral concentration levels than spring water. While spring water is essentially rainwater stored in the ground that rises up naturally, it has a higher mineral concentration because it passes through many layers of soil and rock to reach the water table. 

Several other contaminants might enter spring water in addition to minerals. You can learn more in the article that explains why you can’t use bore water to water vegetables: Can You Water Vegetables With Bore Water?

Rainwater is also ideal because it contains nitrate, a form of nitrogen that is easiest for plants to uptake and use for their growth.

Collecting rainwater is also one of the cheapest ways of caring for your plants. You can simply set out buckets or barrels on your roof if you experience heavy rains or build a system that filters the water and directs it into a reservoir on your property. 

An alternative to mineral-free water is distilled water, which is purified through evaporation and condensation. You can also find or make deionized water, which is also a good alternative to rainwater for watering your carnivorous plants. 

Is Bottled Water Distilled?

Bottled water is safe to drink and can be used to water hardy plants that prefer alkaline soils, as it is often treated in some way. But is it distilled? 

Bottled water is not distilled water. Bottled water may be treated to remove pathogens but still contains minerals and salts. Distilled water, on the other hand, is purified of all contaminants, including minerals. 

Typically distilled water isn’t recommended for watering plants as most plants benefit from trace amounts of minerals found in rainwater and groundwater. However, it is a good idea for carnivorous plants as these plants evolved in nutrition-poor soils. They consume insects and other small organisms to meet their nutritional needs, so they don’t need additional nutrients from the water

Treating Water To Make It Safe for Carnivorous Plants

If you live in an arid region and can’t afford to keep buying distilled water, you can treat tap water to make it suitable for watering your carnivorous plants. Here are a few ways that you can treat water at home, including distillation. 

  • Make distilled water at home. You can easily make distilled water at home using a large stainless steel pot, a smaller pot with high sides that will float inside the first pot, and a lid. Watch how to make distilled water here in this YouTube video – 
  • Use an RO filter. An RO filter or a reverse osmosis filter is one of the best ways of clearing minerals from tap water. Water is forced through a membrane that keeps out contaminants like minerals and sediments, purifying the water. 
  • Set your water out in the sun or boil it. Setting your water out in the sun allows chlorine to evaporate while the salts settle at the bottom. Boiling the water also demineralizes the water as the heat forces the salts to settle on the vessel’s sides. However, this method is not ideal because it doesn’t fully purify the water. 

You can learn more about treating water to make it safe for your carnivorous plants in the article about making tap water more like rainwater: How to Make Tap Water More Like Rain Water?

Tips for Watering Carnivorous Plants Correctly

Here’s how you can water your carnivorous plants correctly to ensure that they remain healthy. 

  1. Get the right kind of water. You want to ensure that the water you’re using for your carnivorous plants has a very low mineral concentration and is not alkaline. 
  2. Keep the soil moist. Most carnivorous plants grow near water sources or in extremely humid areas. You can add water to the trays under the pots or in a separate tray filled with pebbles and water or ice like you would for a Money tree. Learn more about using ice to add humidity in the article that examines if you can use ice to water your Money tree: Can You Water a Money Tree With Only Ice Cubes?
  3. Bottom water your plants. Carnivorous plants do well when they’re allowed to sit in water and soak it up from the bottom. Allow the water to soak up into the pot through the drainage hole, then maintain about 1 inch (2.54 cm) of water in the tray underneath. 
  4. Water enough to keep the soil damp, not soggy. Carnivorous plants will use the water up quickly and are less prone to root rot through overwatering. Nevertheless, it is good to be careful when watering and not add so much water that puddles form in the pot. 

Final Thoughts

You cannot water carnivorous plants with spring water because spring water contains dissolved minerals that can lead to toxicity in these plants. However, you can use rainwater, distilled water, or deionized water instead. 

You can collect rainwater, boil and condense water to distill it, or use an RO filtration system to treat your water and make it deionized for your plants.

Alexander Picot

Alexander Picot is the principal creator of, a website dedicated to gardening tips. Inspired by his mother’s love of gardening, Alex has a passion for taking care of plants and turning backyards into feel-good places and loves to share his experience with the rest of the world.

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