The suitable temperature to ensure the smooth germination of Petunia is about 18-25 ℃, the suitable temperature for further seed growth is about 22-34 ℃, and it can germinate in 3-7 days under normal conditions. Flower friends had better create such a temperature environment for Petunia's sowing, otherwise it will be unknown whether a healthy Petunia can be successfully bred.
In the selection of soil for sowing, the mixture of high temperature sterilized culture soil, rotten leaf soil and fine sand can be used. After sowing, there is no need to cover the soil, as long as you press it gently, the seeds can germinate smoothly, about 5-7 days.
Before sowing, the seedling soil can be watered thoroughly, and after sowing, the moisture of the seedling soil should also be ensured, so as not to be too dry and affect the normal germination.
Although the temperature began to warm up in spring, Petunia was easy to grow in vain due to more rain and less sun at the beginning of spring, so the best sowing time was from the end of spring to the beginning of summer, i.e. June to July.
The sowing time in autumn is mainly from October to November. Under normal conditions, it will take about 100 days for Petunia from sowing to flowering. Therefore, flowers can be seen in the spring next year, but flower friends who live in places without heating need to be careful when sowing, because it is an arduous task to ensure that Petunia can survive the winter smoothly.
