Yes! They are African Marigolds which emit the chemical thiopene from their roots. Thiopene has been proven to repel nematodes, which feed on the roots of plants like tomatoes.

Yes! Marigolds, when placed near doors, windows, and other entry-points of mosquitoes, can deter mosquitoes and make your landscape more attractive. Additionally, marigolds have been known to prohibit insects from preying on tomato plants. More plants that serve as natural pest repellents HERE.