What Seeds to Plant and When One of my favorite guides to planting seeds is the farmer’s almanac. Every year, I pull up their planting calendar, enter my zip code, and determine when I should start planting my seeds; both indoors and outdoors. I don’t like to get too picky about separating my indoor seed planting based on each week. If it is recommended to plant seeds indoors, I plant them all at the same time because I find it easier than planting a few seeds at a time. I usually plant my indoor seeds in March. Last year, I planted March 19th, this year I planted March 23rd. Mind…