Some of the most northern species of cactus , including Opuntia ( prickly pear ) and Pediocactus ( pincushion ) can be observed in full bloom during the later half of June .
Some of the most northern species of cactus , including Opuntia ( prickly pear ) and Pediocactus ( pincushion ) can be seen in full bloom during the later half of June .