How long is the growth period of celery

The growth and development of celery include two stages of vegetative growth and reproductive growth.

1. The vegetative growth stage of celery

1. Germination period: celery seeds germinate until the first true leaf appears, 10~15 days, and the suitable temperature is 15~20℃.

2. Seedling stage: the first true leaf of celery appears until 4~5 true leaves are unfolded. At about 20℃, it takes 40-50 days for celery and 50-70 days for celery, which is the suitable period for planting. Celery has strong adaptability in the seedling stage, and can withstand high temperature of about 30℃ and low temperature of 4℃~5℃.

3. Leaf cluster growth period: 4~5 true leaves of celery are exhibited in the unfolded layer of core leaves. The plant is as high as 30~40 cm. It takes 30~40 days at a suitable temperature of 18℃~24℃, and a low temperature of 5℃~10℃. It's easy to bolt over days.

4. Heart leaf hypertrophy period: most of the celery heart leaves are displayed to harvest. At this time, the petiole quickly grows hypertrophy, and the growth accounts for 70%~80% of the total plant. It takes 30-60 days at 12°C to 22°C. The harvest is in good time.

Second, the reproductive growth stage of celery

1. Dormancy period: The celery seed plants will survive the winter (winter storage) under low temperature and are forced to dormancy.

2. Flowering and fruiting period: Overwintering celery undergoes vernalization under the influence of low temperature, and the vegetative seedling ends begin to transform into reproductive seedling ends at 2℃~5℃. Bolting in spring at 15℃~20℃ and long-day sunlight, forming flower buds, blooming and setting seeds.

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