Catnip
Catnip may be famous for making cats go wild, but it is also an amazing mosquito-repelling plant. This member of the mint family contains nepetalactone, a compound proven to be even more effective than DEET in some studies. Catnip grows quickly and spreads easily, so it’s best to keep it in pots unless you want it to take over your garden. It thrives in full sun and well-drained soil and doesn’t require much attention once established. Crushing the leaves releases a stronger scent, increasing its pest-fighting effect. If you have cats, be warned, they may roll in your plants. Still, for a low-maintenance, dual-purpose herb, catnip is hard to beat.