Don't you just love it when a stock spiffy-pops? You would if you knew what the heck I was talking about.

Rule Breaker Fools coined this term back in 2007, when David Gardner sought to describe the phenomenon of a one-day stock price jump greater than the original price paid for that stock. Such daybaggers among the ranks of Fool newsletter picks include Intuitive Surgical (NASDAQ:ISRG), Amazon.com (NASDAQ:AMZN), Marvel (NYSE:MVL), and priceline.com (NASDAQ:PCLN).

Well, the sound may have been faint last week, but that was definitely a spiffy-pop ringing out from Xi'an, China. China Green Agriculture (AMEX:CGA) rose by $3.51 per share last Wednesday, compared to the Global Gains team's buy price of $2.30.

This organic fertilizer company has certainly come a long way in just a year. Last November, China Green was a microcap stock trading on the over-the-counter bulletin board. But the company was already posting strong numbers, and a massive catalyst was visible to those willing to dig into this international agriculture story.

The company was working on expanding its facilities to achieve a fivefold increase in capacity by fiscal year 2010. That put the stock's multiple at less than five times our analysts' estimate of forward earnings. They floated the prospect of 100% to 300% appreciation potential, which may have seemed outlandish at the time, but in fact turned out to be conservative.

While most of us fertilizer fans were fixated on the likes of PotashCorp (NYSE:POT) and Agrium (NYSE:AGU), the smart money was on a small, niche player that was dirt cheap and growing like gangbusters. You only had to know where to look.

Tim Hanson probably wouldn't have had the confidence to recommend this tiny, illiquid stock to subscribers, had he not visited the company's greenhouses back in 2007 and tasted the results of the company's R&D. Now, he and the team are traveling to India, hunting for more killer investment opportunities. If you want to receive their free dispatches from the road, click right on over here.