Answer: No, flax seed comes from the plant Linum usitatissimum, which is grown commercially for fiber and seeds (which, by the way, yields linseed oil). Ornamental alliums, such as A. caeruleum, are members of the lily family. While the seeds of this blue allium are similar in appearance to flax, they are not the same and should not be used in place of flax. Hope this clarifies things for you!
Q&A Library Searching Tips