tiny kiwi plants

Those seeds I planted out of a Kiwi? A few have grown- from teeny tiny seedlings to teeny tiny plants. Only a half dozen, out of the fifty I must have sown. So not very successful, but all I was curious about was to see one grow! The largest here was the first to come up- it now has several leaves. There are also some straight-leaved plants with reddish stems, that grew in the same tray. I think from some seed sitting dormant in the soil, no idea what it is. Probably a weed.