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I thought about ragweed, but I always come away from a dusty field with more of a raw taste of dried stems and dirt. So, I thought raw-weed taste of dust fit. I'm glad you saw the imagery. I haven't written any poetry for a while and today's prompt felt like it deserved a poem.

You nailed it with raw-weed taste of dust and all the imagery!
Keep writing poetry--it's good practice for writing good prose. :)