The art and science of growing a plant from seed

While it seems like magic that we can harvest a crop of 150g weight tomatoes from a plant that started as 3 mm seed, it really is not easy to get the whole process started. We can sometimes figure out why a seed did not germinate - too deep, too shallow, too wet, too dry - the next step of making leaves and then growing into a healthy plant proves much more difficult for our veggies. They grow leggy and weak - not enough light, not enough nutrients, not enough water? - we try to correct for all of these but it is often  unsuccessful and most frustrating.

We now have an electric propagator - let's see if this helps.