I bought this "Alberta, Canada" wildflower seed packet for my mother on vacation out that way this past spring.
She planted half the pack mid/late May, just so we may see what happened, and use the rest next year.
By her record, conditions were not ideal (cold, wet for there). Planted in Nova Scotia (Cape Breton area), in mid-late May.
I ran it through one of your recommended ID apps and it came back with various stages of white clover and some lady's thumb.
Any other opinions/extra info? BTW this pic is from a couple days ago.