How long does it take for sunflower seeds to germinate?

The sunflower, whose scientific name is Portulaca grandiflora , is named "sunflower" because its flowers open when exposed to sunlight and close without sunlight. This flower is highly adaptable, easy to plant, has rich colors and a long flowering period. It is suitable for arranging the perimeter of flower beds and outdoor landscaping, and is therefore loved by flower lovers. So how long does it take for sunflower seeds to germinate? Let’s learn more about it below.

How long does it take for sunflower seeds to germinate?

The germination time of sunflower seeds is usually around 3-7 days, but this time may be affected by many factors, such as temperature, humidity, seed quality, etc.

How to make sunflowers germinate quickly?

1. Soil preparation

Sunflowers are tolerant to poor soil and are not very demanding on the soil. But it grows best in fertile, well-drained soil with a pH between 6.0-7.5. Before sowing, you can choose peat soil or soil mixed with an appropriate amount of perlite and humus.

2. Seed treatment

It is recommended to soak the seeds before planting sunflowers to allow them to absorb water. This will promote faster germination and greatly increase the germination rate. Generally, soak the seeds directly in warm water for 12-24 hours. After soaking, take them out and dry them in the shade.

3. Sowing time

Sunflowers are generally sown in spring and autumn, with early to mid-April being the best sowing period. If you want to enjoy the flowers earlier, you can sow the seeds in the greenhouse. As long as the temperature and humidity are right, they will take root and sprout.

4. Sowing method

The seeds of sunflowers are very small and light-loving, so they can be directly sown on the soil in the pot without covering it with soil. After sowing, the soil can be lightly compacted to ensure that the seeds are in close contact with the soil.

5. Temperature and light control

The suitable temperature for sowing sunflowers is between 20-25℃. After sowing, make sure the temperature remains within this range to promote rapid germination of seeds. In addition, sunflowers need sufficient light to carry out photosynthesis. Therefore, after sowing, the potting soil should be placed in a well-lit place to avoid prolonged exposure to excessive sunlight.

6. Water and fertilizer key points

As for watering, keep the soil moist, but avoid overwatering, which can cause root rot. During dry seasons, water more frequently. In terms of fertilization, within 2-3 weeks after sowing, you can apply an appropriate amount of organic fertilizer to promote plant growth.

In general, the germination time of sunflower seeds will be affected by many factors. However, if you want it to germinate quickly and well, providing a suitable planting environment is the key, such as temperature, humidity, light, etc. At the same time, correct sowing treatment should be done.