Fill a pot with pre-moistened seed starting mix, and sprinkle a few of the seeds on top of the soil.
Mist with water and cover with 1/8 inch of seed starting mix. Press down gently to make sure seeds are secure.
Keep in a warm place and cover with a plastic bag or dome. Make sure the soil is constantly moist.
Celery seeds will take about 2-3 weeks to germinate, so be patient!
Once seeds have germinated, remove plastic cover and place under lights, always making sure to keep the soil nice and moist.
Once seedlings have grown to about 2-3 inches tall, thin to the strongest plant by snipping the others with scissors. You can now also begin to water with diluted fish emulsion or a compost tea every 2 weeks.
Once your plants have reach 5-6 inches, transfer them to bigger pots. Make sure the pots have proper drainage, and keep the soil moist at all times. Do not fertilize anymore!
You can begin to harden off the celery plants about 3 weeks before your last expected frost date.
It is now time to transfer your celery plant into a self-watering planter.