Rosemary (Rosemarinus officinalis) is a perennial, woody herb that is favored for its use in cooking as well as for use in making delightful potpourris. As a member of the mint family, this highly aromatic herb is an indigenous plant to regions along the Mediterranean Sea. Rosemary is a stout herb that should be planted in late winter through early summer. Keep in mind that when growing rosemary from seed you might not end up with the same variety the seeds came from.
Pour out seed compost into a bucket or bowl. Dampen down the seed compost until it is moist to the touch. To make your own seed compost, mix together 2 parts loam, 1 part peat moss, 1 part fine sand and approximately 1/4 cup of super-phosphate fertilizer for every cubic foot of seed compost you plan to create.
Place the seed compost into a shallow oven-proof tray, in an even layer. Set the oven to 300 degrees F and bake the mix for about 30 minutes to make sure it has been thoroughly sterilized.
Scoop the seed compost into individual 3- or 4-inch plastic pots to within about 1/4 inch from the top. Make sure you sterilize the pots before using.
Firm the seed compost down in each of the pots using your fingers, the base of a 2-inch pot or the back of a metal spoon. The compost should be well firmed down. If necessary, add more compost to the pots.
Sprinkle the rosemary seeds onto the surface of the compost in each of the pots. Press them into the compost using your thumb or the back of the metal spoon. The idea is to make sure they have good contact with the compost, but do not push them so far into the soil that you cover them.
Transfer each of the pots into a sturdy plastic or metal tray.
Set the tray of pots into a clear plastic bag or cover each pot with a loose layer of clear plastic wrap. Try to provide a temperature of approximately 60 degrees F. Check on the pots daily to make sure the compost is still moist, but never wet. Mist the compost with a fine spray of water, as needed. Remove the plastic wrap from each of the pots, or take the tray out of the bag once you see the rosemary seeds sprout, in approximately 15 to 20 days.