What are seed packets?

[jcalton]

The latest iPad update said (in addition to the Valentine's stuff) that there are seed packets you can use to level up plants as you play.

Also, presumably there is a zombie analog?

I didn't realize the update would be inaccurate or I would have taken a screenshot.

[jaydabbler]

that's in PvZ 2

[jcalton]

Son of a gun, I did have that installed. thanks.