Celery & Celeriac
Days to maturity are from date of transplanting, not seeding.
0.2 gram packet ~500 seeds; 0.4 gram packet ~1000 seeds. 75,000 seeds per oz.
Culture: Tender, must be started indoors in March, 10–12 weeks before setting out. Virginian Pam Dawling suggests that falling apple blossoms are a good phenological sign that transplanting time for these crops has arrived. Young seedlings grow slowly, requiring rich moist soil to survive. Regular rainfall or irrigation is necessary for good growth, flavor and yields. Celery withstands light fall frosts but is killed by serious cold.
Minimum germination temperature 40°, optimal range 59–70°, ideal temperature 68° day, 59° night, needs fluctuating temperatures. Emergence takes 12 days at 59° and 7 days at 68°. Only 40% normal seedlings at 59° compared to 97% at 68°. Days to maturity are from date of transplanting, not seeding.
Disease: F: Fusarium