The Kernel. The player can only buy nine seed slots, much like the Nintendo DS version. At the beginning of the game. Use your arsenal of 49 zombie-zapping plants — Peashooters, Wall-nuts. 10 seed slots is the max on the PC version, at least. When will I be able to purchase this? Seed slots represent the number of seed packets the player can bring into a level. It's quite expensive - $80, However, you will probably want it if you replay the. Explodonator - Blow up Still requires 10 seed slots. Get ready to soil your plants as a mob of fun-loving zombies is about to invade your home. The Wall-nuts and (non-gold) magnets are ditched, replaced with relatively inexpensive Kernel-Pults in Pumpkins. The iPad version was called Plants vs. · You can't get 10 seed. . Use your arsenal of 49 zombie-zapping plants — Peashooters, Wall-nuts, Cherry bombs and more — to mulchify 26 types of zombies before they break down your door. I'm not positive about this, but I believe there are only 9 seed slots available in the iPhone/iPod version of the game. In Crazy Dave's car I see the slot being sold for $80, but it has a sold out sign over it. They have different designs in each game.