The starting point for transplanting future seedlings into open ground or a greenhouse is the date of emergence.
But if you make just one mistake after sowing the seeds, you can wait a very long time for the shoots to emerge, and perhaps even wait for nothing. It's all about maintaining the optimal temperature.
We will tell you at what temperature the seeds of different crops germinate.
Despite the fact that seed producers call 23-25 degrees Celsius the optimal parameter, many note that at a higher temperature (25-27 degrees Celsius) the germination period is reduced from 7-10 days to 4-5. But when the room temperature is 18-20 degrees Celsius, the shoots will appear no earlier than in 2 weeks or later, and they will also be uneven.
In order for the seeds to sprout in 5-7 days, you need to create conditions close to 25-30 degrees Celsius. The range of 21-25 increases germination to 8-10 days, and 18-20 degrees to 20 days and more. In the latter case, the seeds may completely rot.
The sprouts will appear within 5-7 days if the room temperature is 23-27 degrees Celsius, in 10-14 days at 23-25 with a plus sign, and at 20 degrees and below the sprouts will appear in about 20 days, if the seeds do not rot in the ground earlier.
Future white cabbage seedlings like conditions of 20-23 degrees Celsius. So shoots will appear in 3-5 days. At 18-20 in 7-10 days. Broccoli will sprout in 4-6 days at 21-23 degrees Celsius.
They will sprout no later than on the fifth day at a temperature of 25-27 degrees or in 5-7 days at 23-25. The seeds will germinate in a room with a temperature of 18-20 degrees for up to 10 days.
Perhaps the most resilient in this regard are the Iceberg lettuce and others, which sprout at 15-20 degrees Celsius. But at lower temperatures they grow slowly and may not form.