There are 12 words that start with 'pollen'.
| pollen | pollens | pollened | 
| pollenate | pollening | pollenated | 
| pollenates | pollenizer | pollenoses | 
| pollenosis | pollenating | pollenizers | 
Note: These 12 words that start with 'pollen' are found from the USA & Canada version of the tournament Scrabble word list.