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Marigold, yes but which one?

Question from a blogger:“it seems that marigolds are effective against soil critters. Is this true and what variety should be planted? »

Marigold has been shown to have a repellent influence on nematodes, small microscopic worms (2 mm long maximum) which live in the ground. Nematodes do serious damage to plant roots. If the soil is infested, the vegetable garden is finished.

The marigold to plant in your garden is the Tagetes signata , flowers yellow, simple. It is a very floriferous plant, decorative with a very rustic side. The smell of marigolds also repels aphids.

You find it in bucket or in seed. Consider harvesting the seeds in late summer for next year's sowing.

Marigold, yes but which one?

photo credit:http://www.bonplant.fr/tagetes%20signata.html