Did you know that some plants can actually inhibit the growth of others in your garden? 🌱 These plants are called allelopathic plants, and they release chemicals that prevent neighboring plants from thriving. In this video, I’ll show you which common vegetable plants release these chemicals and which crops are most sensitive to their effects.
Avoiding these harmful combinations can save you from poor yields, stunted growth, and gardening headaches. Let’s dive into the world of allelopathy and learn how to plan your garden more effectively!
Timecodes:
00:00 – Intro
00:37 – What is Allelopathy?
01:09 – Allelopathic Plant #1
01:28 – Allelopathic Plant #2
02:13 – Allelopathic Plant #3
02:44 – Allelopathic Plant #4
03:43 – Allelopathic Plant #5
04:55 – Allelopathic Plant Mythbust
05:45 – Quickfire other plants
06:43 – Extra Sensitive Plants
08:11 – Never Plant These Next To Each other
10:35 – outro
Knowing which plants not to plant together can drastically improve your garden’s success. Watch to learn how to avoid common allelopathic mistakes and ensure your vegetables thrive!
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Tags: allelopathic plants, gardening mistakes, plant combinations, vegetable gardening, Australian gardening, what plants not to plant together, home garden tips, allelopathy, companion planting mistakes, poor crop growth
47 Comments
Try pronouncing allelopathic again, slowly this time (tongue twister!) 😂
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I'm surprised you didn't state that potatoes are allelopathic. Every time I grow them, I never have to weed that area.
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Good information. Thank you!
Whelp, luckily it’s too hot to grow most of what you mentioned where I live. Tomatoes grow well, but the shield bugs have made me give up on them too. 😩 Just can’t win
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🥒 I enjoyed this video.
Potatoes and apples. I had an apple tree that I planted potatoes close too and got scab on my apples.
Guh… I intentionally planted garlic and onions in the same bed as my brassica seeds thinking they would keep pests away. Everything is growing so slowly – lesson learned!
Awesome vid 🥕🥒🥑
Thanks for this
Oh my gosh, there is SO MUCH I didn't know!!! The only thing I knew in your video was walnut trees. I wonder if mint is why my blackberries died there but did so well elsewhere. I'll need to watch this again with a pad and pen. Thank you.
Lots of good info in video and comments!
I don't get the issue with mint.
If you are going to have a "weed", it might as well be mint. You can always pull it up.
The smell is heavenly.
Not sure they are allelopathic but on my farm in Thailand we grow bamboo on the borders of the property. Not only are they impossible to kill, but bamboo shoots are delicious! Once they start growing, nothing else can survive. Note: never grow them in a residential setting, removing the roots will cost many thousands of dollars.
I have been making this mistake (planting sunflowers, garlic, mustard greens and mint) every year and yes I have beautiful sunflowers but terrible harvests on everything else nearby. Thanks for helping me identify the problem.
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So fascinating! Thank you!
I love your videos & I really appreciate content from an Australian gardener as a fellow Aussie!
I paused the video and ran outside as soon as you said sunflowers because I have a little bed with cucamelons, tomatoes and sunflower and strangely noticed not long after planting the sunflower in there the cucamelon vine slowed down and before that it was growing rapidly. Would you move the tomato plant if it’s only young and not have it next to the cucamelon?
I have a 60x90cm (2”x3”) container full of onions and garlic and right in the middle the biggest bush bean that I ever had in my garden in the past 30 plus years. Strange.
Hi just came across your video, subscribed.
I’ve grown store bought potatoes and have never had a problem with any bugs or fungus though some type of ugly looking worm ate them one time.
Just found your channel – your tomato pruning tutorial is the best!
My cucumbers don’t grow well around my beans
Thank you
Grew massive amounts of fennel, on the sides of my cabbage, wombok, and cauliflower beds, also grew heaps of beetroot with daikon radishes grown in the same beds…..
Companion planting
My father always rotates his potato’s to fight blight. He always rotates over a few years as a precaution
Thank you so much form this info.
The whole legume being a good companion is a myth, yes they nitrogen fix very well, but they don’t provide excess nitrogen to the soil, they essentially eat up every molecule made.
You have to compost the plant back into the soil before it actually contributes any nitrogen.
I currently have the tall variety sunflowers growing in the centre of each of my 6 raised garden beds. They are currently about a metre tall, should I rip them out?
Great video. Any suggestions of how to get rid of the mint taking over my garden? 😕
BAMBOO.
Never, ever plant bamboo. Nothing will grow close to bamboo.
this explains why one of my Moringa trees didn't do well last year and looks amazing today. Fennel! i planted fennel with it! This video explains so much of my failures and issues. THANKS!
Great information – thank you!
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Oh my gosh and goodness gracious me, now there are wicked murderous plants to watch out for.
Please learn to say the word. You offered good info, but hearing you pronounce al-lel-o-pathic as al-ee-o-pathic was distracting.
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Why are you not on tv 😊
There are bully plants, who'd have guessed it?
Dill is horribly aleopathic
I do garden design, installation and maintenance, and I have often enough been asked by clients why some part of their garden is not looking happy. Many times it is a bird feeder – sometimes with just sunflower seeds or a bird-seed mix containing sunflower seeds – most bird-seed mixes in the U.S. have them. Black oil-seed sunflowers are the worst culprits. I am not always able to find a different location for the feeder that suits the client, nor to persuade them to use a mix without sunflower seeds or a mix with hulled sunflower seeds. (Those mixes are more expensive.) The issue seems to be the hulls, not the seeds themselves – the birds eat the seeds and drop the hulls. (The hulls can also be an irritating mess to clean up, depending on the location of the feeder.)
I have some fennel growing right next to a wattle, the wattle is booming. Will fennel get rid of couch grass. Maybe sunflower would get rid of couch. Maybe I can throw raddishs on the couch. Going to have to grow some wormwood I think
I want to plant a large gum tree in my front yard for bird habitat, and the best spot is about six feet away from my mature lemon tree. Will this cause a problem do you think?
My garden is totally taken over by mint. I have to pull it out it's crazy fast growing. I just planted some sun flowers wow !!!