Growing cooking herbs, plants and flowers

I love growing flowers from seeds I think its a lot easier than buying a plant already growing in the pot because you can start from scratch and and you know what has been added to the soil to get the plants off to the right start. I use soil with plant food already in it, I add coffee grounds often to the soil. Every month I add plant food to all of the plants and when planting seeds or plants, I add black gold manure and compost to the soil. Hand water plants every two days, lately have been lucky with the rain which helps a lot during these hot temperatures.