All you need to help your orchid plant thrive is an old potato – an ingenious hack or a myth?
Can you use an old potato to help your orchid plant thrive? Experts reveal whether it’s an ingenious hack or a simply a myth
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EDITOR’S NOTE: An earlier version of this article included a quote from a purported expert whose credentials we have not been able to verify. The quote has been removed. We regret this lapse in our verification process and have updated our internal protocols to reduce the risk of recurrence.
We heard through the grapevine of the internet that there is a new and rather odd-sounding plant hack on the block. The hack in question? Using a boiled old potato to help an orchid plant thrive.
So if you have an old potato that you’re not going to be needing then this trick claims you can turn it into a natural plant fertiliser for your orchid. Technically, this method doesn’t necessarily require the potato to be an old one. So even if you’re just boiling some potatoes for your dinner, then you can use the remaining water to give your plant a boost.
Because it’s this miraculous, nutrient-rich juice that apparently does wonders for your orchid, according to plant experts. So here’s how to use old (or new) potatoes to keep your orchid blooming and how it works.
Potato fertiliser hack for orchids
We bet that you didn’t think boiling potatoes is a part of how to take care of an orchid. To be fair, neither did we. This natural plant care hack has taken us by surprise, too.
‘Potatoes provide potassium and phosphorus, which are both essential to orchid flowering and growth,’ starts Petar Ivanov, Fantastic Gardeners' plant and gardening expert. This makes them a good cost-effective fertiliser for orchids.
But Steve Chilton, garden expert at LeisureBench, warns that it’s not exactly a conventional method how to water orchids and help them grow. ‘It has been said that boiled potatoes can be used as a natural fertiliser for orchids, although this isn't necessarily seen as a "conventional" method, so if following this advice I always recommend keeping an eye on your orchids to notice any negative changes, and adjust as needed to ensure they stay healthy.’
But if you do decide to give this hack a go, this is what you need to do.
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Steve is a passionate and knowledgeable garden expert with several years of experience within the field. As the director of LeisureBench, an industry-leading garden furniture company, Steve has developed strong expertise for all things nature and plants.
How to fertilise orchids with potatoes
Do not peel your potatoes as the nutrients are found in the skin. All you need to do is boil them – some experts recommend chopping them up into small cubes or grating them first so that they release even more of their nutrients. It's the water they're cooked in which, when cool, you'll use to fertilise your orchid, so drain the water into a jug or container.
Steve adds, ‘It's important to let the water completely cool down after boiling, then add to the orchids as you would with normal water. I would recommend diluting the starchy water with normal water as this will ensure that there's not too high of a concentration of nutrients, which could actually damage the orchids instead of benefit them.’
The world of plants never ceases to amaze us. Boiled potatoes for orchids – who would have thought?!

Sara Hesikova has been a Content Editor at Ideal Home since June 2024, starting at the title as a News Writer in July 2023. She is now also the Ideal Home Certified Expert in Training on Furniture, and so far has tested over 150 different sofas.
Graduating from London College of Fashion with a bachelor’s degree in fashion journalism in 2016, she got her start in niche fashion and lifestyle magazines like Glass and Alvar as a writer and editor before making the leap into interiors, working with the likes of 91 Magazine and copywriting for luxury bed linen brand Yves Delorme among others.