1. Bury celery seeds: Before planting celery, you can bury celery seeds deeply in the soil and let the seeds grow down naturally. The depth of the seeds should be about 1-2cm. It should be noted that the temperature of celery seed growth is generally 15℃-28℃.
2. Planting containers: When planting celery, you can choose a deeper container or flowerpot, so that celery has more and deeper soil depth to grow downwards.
3. Keep the soil moist: celery needs enough water during the growth period, especially at the seedling stage, so it can be properly watered to keep the soil moist. Wet soil is more conducive to the downward growth of celery roots.
4. Fertilization: Proper fertilization can provide sufficient nutrition for celery, promote the root system development of celery, and be conducive to downward growth. Usually, during the vigorous growth of celery, applying organic fertilizer once a week can promote the growth of deep roots.
In order to make celery roots grow downward, we need to pay attention to reasonable planting, adequate watering and appropriate fertilization. Also pay attention to temperature control, ventilation, pest control, and protect the healthy growth of celery.