You have started the sprouting and are waiting... Have your seeds germinated yet? You will have to remove the cover from a seedling tray, when it happens. But, how do you know it's the time?
Germination is the process of a seed developing into a new plant. It absorbes water and starts to grow. First, it produces a small root and then a stem with 2 tiny leaves, called the sprout.
That's it. When you can see the sprout, you know the seed has germinated. It's that simple - you know that your seeds have germinated when you can see the sprouts. Shoots from one batch of seeds often develop with different speeds, so don't worry, if only few sprouts are up yet.
When you start vegetable seeds, you will notice the germination almost as soon, as it happens. However, it can take a while for the sprout to get above the ground when you sow outdoors. This delay is irrelevant, as any gardening tasks take place, when seedlings are already visible.
See more tips about starting the vegetable seeds indoors, to avoid potential mistakes.
Image credit: Victor M. Vicente Selvas (Own work) [Public domain], via Wikimedia Commons