wrong seeds

I planted lots of cabbages. Really lots becasue4 I thought that the slugs might get onto them.Mostly theyu are all cabbagey colour but one set is totally different although they were all the same kinds of seeds. They are growing so I guess they are something hardy but they are light green and look more like radish tops or a salad crop sirry I am hopeless at computer images.
Does anybody else get the wrong seeds in a packet?

 

....my hubby did!!!

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