Bilkul aap ka kathan sahi hai, lekin mere gamle me mirch aur other plants like aloevera Tulsi , giloy , Ganda phool, cactus, hai without mixing soil, mai normal park ka soil use karta hu, Only I change in small amount of soil after 3-4 months. No idea for veggie plants, soon I will plant veggies , uske baad share karunga apna experience