United States

I grew 4 seed potato plants for my science project. I grew one plant with extra fertilizer, one with extra co2, one with a grow lamp, and one I totally left alone. The plant I left alone grew the tallest but stemmy, the one with c02 was the most compact but small due to the container it was in, the grow lamp plant was tall and lanky, and the one with fertilizer was a little smaller than the left alone plant. What would cause my plants to be so stemmy? Is it because the containers I had were too shallow and the tuber didn't have enough room to grow/

• 7 Apr, 2009