A couple comments on other people's ideas...
I like the ideas of stackable seeds and labels
on seed boxes. Gardeners always keep the same
seeds together in one container with a label.

Now, my new idea...
Anyone know about Gregor Mendel? The father of
genetics? He discovered inheritable traits.
I wish the game was a little more like his
experiments (with at least one more inheritable
trait.) maybe one with dominant and recessive
aspects like Mendel found from breeding peas.
He found that he could breed some plants with
different color seeds, wrinkled rather than
smooth seeds, a different shape or color to
the flowers...
I'm not asking for all of these things at once.
I'm just asking for ONE inheritable, recessive
trait, like... say... seed color.