Thank you sooo much for a link to the hack. I actually need those seeds too since it takes ages to get the opportunities to unlock the seeds. I got two sims at lvl 10 gardening and I only JUST got the first opportunity to unlock the special seeds.
Back on topic, I wish someone would check and see what's up with them gnomes codewise. I fished my very first gnome, named him right away and he moved nicely a couple of times but then stopped. So I decided to kick it after a a sim week or two without any activity.
I guess it's easier to find them by doing all those activities (fishing/collecting/catacomb exploring), especially the meteor collecting seem to be very profitable when it somes to gnomes... in the meantime I'll be downloading that hack