The Marigolds Ring of Steel for Tomatoes

Marigolds and Tomatoes go hand in hand as best friends. They love being planted next to one another and are true companions. Why?

  • It has been proven that Marigolds repel pests like whitefly and thrips away from Tomatoes, these pests don’t like the pungent smell they give off,
  • Marigolds will give a colourful display of bright flowers from spring until Autumn,
  • Marigolds have nematode protection for the soil that they grow in and the soil around them and tomatoes, their roots give off a toxic sulphur chemical in the soil which attack plant parasites.

Years ago when I had a greenhouse, marigolds were the only pest control that worked and kept the whitefly away from my tomatoes. Two years ago, I planted tomatoes outside in my raised beds next to marigolds and it definitely worked a second time.

This year I’m trying a Marigold ring of Steel protection around my tomatoes and at the foot of my sunflowers. I hope the bright flowers brighten up the vegetable garden and bring the bees and insects to pollinate the tomatoes but also I hope the marigolds will protect my Tomatoes, when they finally get growing.

Marigolds ring of steel for Tomatoes

How to Sow and Plant your Marigolds Ring of Steel for Tomatoes

  • 1. Sow marigolds seeds into a seed tray and cover with compost and water. Put in a warm place to germinate.
  • 2. Once the seedlings have bushed out and are competing with light with the other seedlings, prick them out and either plant straight out into your raised bed or you can pot them on again.
  • 3. Plant your marigolds in whatever shape I.e. circle, oval, square, rectangle, a couple of inches apart from one another. Leave enough space in the middle to plant your tomatoes.
  • 4. Water in your marigolds and leave them to grow on and establish as strong plants whilst you are growing on your tomatoes.
  • 5. Plant your tomatoes in the centre of your ring or shape of marigolds.

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6 responses to “The Marigolds Ring of Steel for Tomatoes”

  1. I have heard about marigolds before.. I am having an ant problem with one of my melon trees its quite small at the moment and not potted out in its permanent spot I have potted it on twice but the pesky ants just home in on that one for some reason..Thank you for following CarolCooks2 😊

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  2. […] Marigolds planted out in the Ring of Steel for Tomatoes. […]

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  3. […] Marigolds Ring of Steel (here’s my original post) has been very successful at keeping away greenfly and blackfly from the tomatoes this […]

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  4. […] The Marigolds Ring of Steel around Tomatoes – to stop green, black and whitefly pests. […]

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About Me

Hi, I’m Tracey — vegetable grower, passionate learner, and firm believer that anyone can grow their own food. While I work as an account manager during the day, my spare time has been dedicated to growing vegetables in my back garden for the last 23 years.

What started as a hobby grew into a passion, and now I’m building a place where others can learn too. This is your veg-growing hub for practical advice, seasonal inspiration, beginner-friendly learning, and real gardening experiences from someone who’s grown through every success and setback.

Real gardening, real learning, real harvests.

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