I've learned the most about gardening through my mistakes. 

For years I couldn't figure out why I had such a hard time growing onions. They would have great looking tops, full and green. But then when it came time to pull them up...

...the bulbs were puny. 

It turns out, I was making a big mistake - I was fertilizing them. There are quite a few vegetables we should hold off on fertilizing for the best results. Check them out!