Bean Stalk (RG398)

Bean Stalk Alerts you of upcoming zombies. Unlocked after beating day 5 Sun City

Strategies
planting this plant is useful because when alerted you will know where to plant your first wall nut or peashooter

Unlocked
unlocked after beating day 5 Sun City

Ideas
I would like you to comment your ideas Thx :D

Update 1
sun cost: 50

Recharge: slow

Plant Food
alerts you when any zombie is about to appear

Almanac entry
alerts you of upcoming zombies

Special: alerts you of zombies in its lane