For outdoor ornamental plants check out the chart below for what and when to seed. Peruse the seed racks at your favorite garden center for additional plants not shown on the chart, hopefully many of your favorites are listed.
Some seeds require well more than between 4 to 8 weeks to grow indoors before being transplanted outside in the spring. These include - angelonia, bee balm, carnation, dusty miller, heliotrope, licorice plant, lisianthus, lobelia, love-in-a-puff vine, ornamental pepper, painted tongue, pansy, petunia, rudbeckia, stock and verbena.
Time is flying by so get going!
As of today, there are just seven Mondays until the first day of spring - March 20, 2018. Nice!