Learn Learn how to Expand Celery from Seed
Celery is a cool-season crop. It grows best where daytime temperatures are consistently greater than 55°F (13°C) but not consistently warmer than 80°F (26°C). Where temperatures are very warm, celery will grow stringy; where temperatures fall below 50°F, celery will send up flower stalks and become bitter flavored. Start celery indoors 14 to 6 weeks