Is Bong Water Good for Plants?

If you're here, you've obviously asked yourself this question, so let’s just get to it.

Bong water isn’t a very good idea as far as your plants are concerned. That’s all thanks to all the stuff that accumulates in the water every time you get your hit – ash, mold, resin, and bacteria. It won’t be that long before your plants stop growing, eventually dying off.

That being said, not all bong water is equal, so the question of whether or not it’s good for plants is best answered by how clean or dirty you keep your bong and the water.

It’ll Depend on How Often You Replace the Water

The reason behind this is simple, really – the longer the water stays in the bong the more all the harmful dirt accumulates and the more likely it is to harm your plants. The same also applies to bong cleaning.

The resin that remains behind isn’t exactly ideal for water that’s meant to help plants thrive – hell, it isn’t even safe for you, too. Besides, there’s also something to be said about the taste of the cannabis passing through dirty water and bong – and it’s not good.

Now, there are no specifics when talking about how long you can wait before getting rid of the bong water or cleaning the bong itself. But keeping things clear is always a great idea.

This is as simple as changing the water after every session and cleaning up the bong at least once per week depending on how often you partake in the sacred herb.

Regardless, you might want to keep that water far away from your plants just to be on the safe side.

Why Bong Water is Generally a Bad Idea for Your Plants

Of course, we’ve already talked about bong water composition – mold, bacteria, resin, and ash – that could be harmful to your plants. But how exactly does it affect your plants?

While all of these components could be problematic, it’s usually the resin that accelerates your plant’s death. When it’s introduced in the soil, it blocks the pores causing clogging making it a bit difficult for the roots to penetrate. The problem only becomes bigger the more resin you dump into the soil when you continue watering your plants with bong water.

Aside from that, the water also tends to be acidic which isn’t exactly ideal for most plants as it messes with nutrient intake. Ooh, and there’s the smell that can be problematic if you’re using the bong water on indoor potted plants.

So, it’s just best to stick to clean/normal water and a good watering schedule.

Best Water for Plants

Speaking of clean/normal water, here are a few options to look into – that’s if you didn’t know yet.

Distilled Water

With this, your plant is only getting one thing – water. There are additional chemicals or minerals to worry about as the water has been purified.

On the flip side, though, the purification process will rid the water of otherwise beneficial minerals like magnesium and calcium. The water is also expensive, so it’s not really an option you can stick with long term.


This is as clean as distilled water above but has the added advantage of minerals in the perfect proportions for your plants. Of course, it’s also free so you can use as much of it as you want if you have somewhere to keep it.

The downsides are that it’ll not always be available all year round and industrial pollution may render it a bit acidic and unusable.

Tap Water

This is the most cheaply available and probably the most widely used. Most plants will grow just fine with tap water despite the presence of unnecessary additives like chlorine and fluoride. But to stay on the safer side, you can leave the water out for 24 hours before using it on your plants.

This is especially important in places where the chlorine and fluoride are in high concentrations.

Bottled Water

This is certainly not a favorable option due to the obvious cost implications but it’s a worthwhile consideration.

Unlike tap water above, bottled water is free of chlorine and fluoride, which makes it a far much safer option. And depending on the source, it could contain a good amount of vital minerals such as magnesium and calcium (this is usually the case with bottled water sourced from springs).

The major downside, though, is that it’s expensive since you have to water your plants several times. Additionally, there’s also the issue of environmental pollution seeing as not everyone is going to be paying attention to how they dispose of their used bottles.

So, What Should You Do with Bong Water?

There really isn’t much you can do with bong water. It becomes useless as soon as your smoking session is over, so dumping it somewhere away from your plants is pretty much in order.

But you could add it to your compost pile – if you have one, that is. The presence of plant material and bacteria can have some positive effects on the decomposing process. That’s just hypothetical, though.

There’s really no evidence to support this claim.

Final Thoughts

Just as you wouldn’t drink bong water, you should totally avoid using it on your plants. Ash, bacteria, resin, and mold don’t have your plants’ best interest at heart.

And that applies even if you replace your bong water after every session and clean out the bong regularly (you should really do this). The best you can do with bong water is discard it.

As far as watering your plants is concerned, sticking to your usual options of water is certainly a wise decision.