Learn how to grow celery in your home garden—from seed starting to harvest. Discover tips for crisp, flavorful stalks and the difference between trenching and self-blanching varieties. Once it’s time to transplant in late April, celeryplantspacing comes into play. Tight planting forces taller stalks. As a rule, transplants are usually used to establish celery crops. CeleryPlantSpacing.If planted under the proper conditions, celeryplants are fairly free of pests and disease. But even the sturdiest plants can be plagued by some problems. A cool-season crop, celery needs 16 weeks of cool weather to produce the leafstalks, which are the edible part of the plant. The plant requires moist, fertile soil and proper spacing to grow. Celery is most often transplanted in order to give it a jump start on the season before hot summer days arrive. Once it’s time to transplant in late April, celeryplantspacing comes into play. Celery is best started about 10 to 12 weeks to last frost. When you start celery around this time, the plant will be a nice 3 to 4 inch tall garden start, perfect for transplanting into your garden! Planting and SpacingCelery. Sow celery seed ¼ to ½ inch deep, 6 to 10 inches (15-25cm) apart; space rows 24 inches (61cm) apart. Companion Plants For Celery. What To Plant With Celery. Celery Companion Planting. Growing Celery In Garden. How To Grow Celery At Home. Be sure to follow correct celeryplantspacing to aid in disease prevention and allow plants to spread out. Green onions make a great companion plant, while sweet potatoes may damage the... Plantingcelery seeds in the garden. Plantcelery in cell packs or seed trays. Use a well-draining mix and remember the seeds need light to germinate. Caring for celery seedlings. To start celery in your hydroponic system, plant the seeds in a suitable hydroponic growing medium (such as coco coir pith), about 1/8 inch deep. With proper spacing, your celeryplants will have the best chance of thriving and producing delicious, crunchy stalks. Light and Temperature Requirements. To combat this, making sure to spaceplants out appropriately will allow for better airflow and lower humidity around leaves. Celery has high water content—95% of its... When plantingceleryplants, be sure to leave the crown of the plant above the soil surface. The crown is that part of the base of the plant from which the stalks emerge.