The good news is that I finally got off my ass and did it! I have to be honest - winter sowing was not very fun. I had to fill the containers in the basement since it was too cold outside. What a mess I made in the Garden Cave.
I have no clue if I did this right. I used a box cutter to cut slits towards the tops of the containers for air circulation and in the bottom for drainage. Then I cut them open leaving the hinge thingy like Trudi's site says. Next I put dirt in, threw the seeds in there with some water, then taped them together with duct tape. One thing I do know for sure is that 23 containers was not nearly enough. I need at least 23 more.
Here are a couple of notes about my first try at this:
Milk containers suck! The plastic is thinner which makes it harder to work with.
Hinckley Springs water containers work best - already clean and the plastic is thick and sturdy!
2 liter Diet Rite bottles work nice but they are small - narrow.
Do I water these things regularly or what?
How much longer can I start these containers? I need more time to save more bottles!