That's right, you can plant in your garden in September!However there are 3 things you need to do for your September planting to be successful.
Roquette / Arugula
Tatsoi Arc-en-ciel / Rainbow Tatsoi
Roquette Sauvage Sylvetta / Sylvetta Wild Arugula
Verdurette d'Hiver / Winter Green
Cresson Alénnois / Garden Cress