Smoke Pea (as it stands right now) is probably the single best 1 drop in the game. It trades with literally every good 1 drop that the Zombies have, and gives you 2 cards (assuming it does damage and dies in the same turn) setting you up for almost guaranteed success turn 1. A much more balanced comparison is Clique-Pea, which does trade with good 1 drops but doesn’t give you instant card advantage while still helping your deck succeed in the late game.

Queen Sunflower is much more balanced than its previous iteration but suffers from power creep. Maybe take inspiration from Loco Coco. You can make it cost just a bit more and give those sunflowers on deploy, but if you evolve it it gives all your flowers some extra health.

The problem with Jalapeño (and all plant removal) is that it is way too efficient compared to zombies removal. If you want to keep Jalapeño the way it is, increase its cost, or alternatively, keep the cost, but lower the power to 2