I planted 5 varieties this year with intention of using green house, outside and hanging. Unfortunately 2 varieties got mixed up - hanging that are from GYO giveaway and standard yellow variety (sungold). How do i tell them apart so that i can plant on. they are about 6-8 inches tall and have some side shoots and even early flowers on some

The ones from the GYO magazine giveaway are stumpy, multi branched and full of flowers [at least 70 flowers] if mine are anything to go by. they are now 1 foot tall but seem to be forming a thick bush.
Sorry I can't help with the sungold variety. What does it say on the packet?

no, that is really helpful, thank you - probably opposite to what I was expecting and would have donw, TA
adam