Tree Food

Tree food is used to grow the Tree of Wisdom, costs $2500 per packet, and is bought at Crazy Dave's Twiddydinkies.

Usage
Feed it to your Tree of Wisdom one packet at a time. Each one will make it one foot taller. Yes, that means that to grow it to 1,000 feet, you will need to spend 2,487,500 (since Crazy Dave gives you five free Tree Food packets when you buy the Tree of Wisdom).