scarlet flax

I got seed in a wildflower mix. One of the flowers I didn’t recognize, but have looked around and I think it is a scarlet flax. What I read said they were annuals, but it has been down in the low 20’s, and the flower plants are still looking good. Do you think it is still a scarlet flax? It has such lovely flowers, I’d like to have it as a perennial little shrub.
Just an FYI since it asks below, USDA maps put me in zone 6, but we are in a pocket of significantly colder winters. Thank you for any input.

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1 Comment To "scarlet flax"

#1 Comment By MichiganDot On 11/11/2017 @ 12:34 pm

Scarlet flax is a hardy annual. This means it can tolerate some frost and even live through mild winters in zone 5-6. Snapdragons are similar hardy annuals. (Tender annuals die at the first frost.) Have you gathered seed or let the plant go to seed; it often self-sows new plants. Flax is not native to North American. Wildflower mixes often include perennials, which take longer to get established and flower, as well as annuals which give an initial pop of color. If you are interested in growing native plants, do an internet search for the “native plant nursery” nearest you.

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