Growing Thyme From Seed In Pots. You can grow thyme plant from seeds but it has some difficulties in growing. 4-6 weeks before last frost sprinkle seeds in seed-starting containers plastic starting trays egg cartons peat pots milk cartons in a sterile loose seed-starting medium.
Ideal is to sow the seed indoors 6 - 8 weeks before the last frost. Use small pots filled with seed growing compost and place in a propagator to germinate. Water well making sure that you are not making it soggy.
Most gardeners suggest buying young thyme seedlings which you can obtain at any nursery or take cuttings from someone elses thyme.
Potted plants should be taken indoors in the winter if you have severe frost over a longer period. Seedlings should emerge within a week. Ideal is to sow the seed indoors 6 - 8 weeks before the last frost. Once it grows well it should be.