I added two radishes, alphabetized under "Radish". They are old seeds, 2011, but there's 1/2 tsp each.
I added around 5 new lettuces, mostly 2013, mostly 1/2 tsp or 1 tsp. Some list under "butterhead" and some list under "Lettuce".
However (my bad) some of those already existed in my swap list. For now, I left the duplicate rows in place, which might confuse Dave's feature that tells you when you have already dibbsed an item. But I have enough seeds to cover the quantities listed in both rows, combined.