The U.S. Census Bureau's export data tracks U.S. food and agricultural trade shipped directly to Poland. However, it does not measure the substantial levels of the U.S. agricultural trade to Poland routed through Western European ports of entry.
Attaché Report (GAIN)

Poland: Planting Seed Market in Poland - Outlook

Poland is one of the major agricultural plant producers in the EU, with great potential for future planting seed market development.