I love it, and checked a few boxes.
Here are some check boxes you might add if they're widely desired:
Alpine Flower Seeds
Heirloom Vegetable Seeds
OP Vegetable Seeds
Heirloom Flower Seeds
OP Flower Seeds
Specialize in certain regions, like PNW, Southern, Northeast, cold weather / short season
possibly "oriented towards market growers and farmers"
possibly "bulk orders only" and "bulk sizes also available"
Some possible additional features:
1. Ability to search for the company name, or jump to the first letter..
The "search" dialog box currently searches all ATP.
2 A filter to display only companies that have XYZ or ABC or DEF checked as "specialize in".
A frill would be to then list them in order of how many of the desirable boxes they had checked.
This might be too cryptic, and a reference to "The Yellow Pages" might not make sense to the Google Generation, but I;m going to think of this as "The Green Pages".
OMG, TGP at ATP !!!