When is the right time to sow greenhouse watermelons?

Suitable time for planting greenhouse watermelon

Greenhouse watermelon is an artificially cultivated off-season plant that mainly relies on seeds or grafting for propagation. It will bloom about two months after sowing. The general time of flowering and pollination is mid-March, and it will bear fruit in mid-to-late May.

It is best to sow greenhouse watermelons in early spring, with mid-January being the best time period. At this time, the temperature even in the northern greenhouse can be maintained above 15 degrees Celsius, allowing the seeds to take root and germinate smoothly, providing them with sufficient nutrients during the growth process, so that they can be sold before the summer watermelons are available in large quantities.

Greenhouse watermelon sowing method

1. Prepare the soil

Greenhouse watermelons like to grow in a dry and breathable environment. It is best to use sandy soil combined with sand to achieve excellent water-repellent effect. This condition can make the vines grow more vigorously.

2. Sowing and watering

Next, bury the greenhouse watermelon seeds in the soil, and then pour in more water to keep the soil moist and help the seeds germinate smoothly and grow new shoots.

Key points and techniques for growing watermelon in greenhouse

1. Lighting

Light is crucial during the growth of greenhouse watermelons. Adequate light can ensure that they are sweeter and have a better taste, but in the early stages of planting, diffuse light should be used to avoid direct sunlight on the seedlings.

2. Moisture

Greenhouse watermelons have a high demand for water, but have poor waterlogging resistance, especially in the seedling stage. It is necessary to avoid waterlogging in the soil and reduce the amount of water input to ensure that the plant roots can breathe and grow normally.