Safflower is anti-squirrel seed! Safflower attracts cardinals, woodpeckers, grosbeaks and more! Feeding is made easy with our seed blocks just unwrap, slip the block into its feeder and you’re done! No fuss, no mess. Safflower. 7-1/2 x 2-1/4 x 6-3/8. 2 Day Express Shipping Service is not available for this item.