Celery seeds are available in two main varieties (trench and self blanching) and will provide you with a healthy ingredient or snack full of potassium. Your Celery seeds need to be sown late March or April under glass. Germination takes 12 to 18 days. Once big enough to handle the trench varieties need to be transplanted into trenches, and the self blanching varieties need to be transplanted on to level ground.
The trench varieties take 30 weeks to reach maturity, and the self blanching varieties take just 18 weeks to reach maturity.