Growing lavender is fun and has many uses including as a mosquito repellent. It smells great and the honey bees love it too.
Catnip is for more than the kitties. Great in the ground, or planters. Plant together with other plants that also repel bugs.
Garlic is an excellent repellant of mosquitos and other pests. Plant in the ground where you want to help keep your yard pest free.
Plant scented citronella geraniums to help control mosquitos in pots to put around your patio and in areas that you and your guests might want to sit without being bothered by mosquitos.