Blot Out the Sun Plants that produce billowing clouds of thick pollen, blotting out the sun over enemy territories. Requires: Sentient Plants. Level 35. Allows: Guarding Fields, Seeds of Doom Duration: Permanent Acquisition: Research Weapon Blot Out the Sun Plants that produce billowing clouds of thick pollen, blotting out the sun over enemy territories. Weapon Bonuses Motivation +35 Economic Efficiency +25