Answer: According to Pennington Seeds, Pisum sativum subsp. arvense or Austrian winter peas are normally grown as a large scale plow down cover crop for soil enrichment or as a forage crop for animals such as livestock and deer rather than as a home garden or food crop. It is a typcial legume and will fix free nitrogen from the soil and is grown as a cool season crop in the southeastern US.
I have not been able to verify that these particular peas serve well as "aphid bait" in the garden, although it would not surprise me; it is true that any garden pea (also Pisum varieties) may attract aphids and as a result of a heavy infestation the lady bugs and other beneficials will naturally appear and control them. Peas are generally a cool season crop, though, and tomatoes a warm season one so the interative effect could be minimal.
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