What I mean by duff seed is, seed bought from reputable seed companies that is either wrong or not pure.
Last year I bought some Gardeners Delight tomato seed which turned out to be Tigerella (or very similar)
This year I bought some cyclamen seed (shock horror he grows flowers too

Plus 2 other oddities, I planted some January King cabbages which are now filling out nicely, but one is most definitely NOT a Jan King, it's twice the size and has smooth light green leaves, not the dark purplish crinkled leaves of the others.
And (

I wait with interest as to what next year will bring.