We start our plants from seed around the end of January. Sometime in February we begin transplanting them into their own cells. All of this is done in our basement using an array of shoplights and a tomato "incubator"
Here is a slideshow of our seedlings and transplanting process:
Seedlings and Transplanting
This is a view of our tomato "incubator" which is heated underneath with lightbulbs
We start 25 seeds per cup then transplant each to its own cell when they look like this
First, we mix up potting media
The cup of tomatoes must be seperated into individual plants
The plug is put into a shallow pan of water
Getting them untangled is a careful process
They are kept with the roots in the water...
...so the roots don't dry out while they wait to be transplanted
a cup or cell pack is filled with soil
A slot is made with a pencil
Carefully get the roots and stem into the slot
bury the plant as deeply as possible
so that new roots will form off of the stem
the plants live in the basement under lights for about a week...
...then are taken out to the little greenhouse
holes in the bottom of the containers allow them to soak up water when watered