Celery thrives in cool and humid environments, with a moderate level of cold tolerance. Its ideal growing temperature ranges between 15°C and 20°C. While the seedling stage can tolerate higher temperatures, the seeds begin to germinate at as low as 4°C. The optimal germination temperature is also 15°C to 20°C, and high temperatures can slow down the process. Additionally, celery seeds require adequate moisture and some light for successful germination.
Celery can be planted throughout the year, depending on the local climate. For example, in Hangzhou, seedlings are typically sown from mid-June to August and again from late January to February. When planting seedlings, the amount varies: about 250 grams per mu when using film cover, with seedlings aged 50–60 days. From mid-June to July, the seeding rate increases to about 0.5 kg per mu, using shade nets, and seedlings are ready in 40–50 days. In August, seedlings are planted at 250 grams per mu using shade nets, with a seedling age of around 50 days.
Because celery seeds (which are actually small fruits) have a thick outer layer and poor water permeability, their germination ability is relatively weak. To improve germination rates, the seeds should be pre-treated before sowing. This usually involves soaking them for 12–14 hours, then rinsing and gently rubbing them to remove the outer layer. After drying the surface, they are kept at 20–22°C until about 50% of the seeds start to sprout. Before planting, the soil should be moistened, and shading or rain protection is recommended during hot seasons. Once the seedlings emerge, which takes about 7–14 days, it's important to keep the soil consistently moist. When the seedlings have 4–6 true leaves, they can be transplanted. Due to the slow emergence of celery, weeds often appear early in the seedbed. It's advisable to remove weeds when the seedlings have 1–2 true leaves to ensure healthy growth.
Celery is a versatile crop that can be grown in different seasons, but proper care during the early stages is crucial for success. Whether you're planting in spring, summer, or autumn, following these guidelines will help you achieve better results and healthier plants.
Euro Facade Frame System,European Style Facade Frame System
Chuzhou Jincheng Metalwork Co.,Ltd , https://www.jinchengscaffold.com