Not a pea. It is definitely an Epilobium, possibly Epilobium hirtigerum. I need at least one clear photo of a stem and leaves showing individual hairs, if present.
Sorry. There used to be a wiki on CNM with a lot of practical advice under About. I have looked at all three platforms and it does not appear to be there anymore on any of them. Neither Don nor I are in good health so do not take photos any more. Perhaps one of the other moderators could help. Though I just googled macro app photo and there weee several reviews as top hits.