Answer: Both Mexican shell flower and Dutch iris have wide, flat leaves, similar to the foliage on gladiolus. If in doubt, leave things alone until you are sure - it would be terrible to accidentally pull out one of your new plants. I can't think of any common weeds that would have similar leaves, but you never know! Dutch iris typically flower in early spring. Given your elevation, they may bloom for you this year. If not, they will certainly bloom for you next spring. Mexican shell flowers should bloom in late summer, as will the glads. Ranunculus typically flowers in early summer so they may not mature enough to flower this year but they should begin to flower next year, right after the Dutch iris have finished blooming. With your nice mixture of bulbs you should have something flowering from spring until fall once the plants are all established. Enjoy.
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