There's a thin line between fertilizing and over-fertilizing your food crops. Too few nutrients and your tomatoes and corn never really take off. Too many and your artichoke and broccoli can suffer. Since I tend to favor deep-rooted perennials, which are low-maintenance and more resistant to weather extremes, my particular challenge is making sure I don't overdo it. So, I use fertilizer strategically, boosting plant growth largely by feeding my soil. I test my soil every other year, so I know the nutrients my soil needs. And I rely on timing, knowing the right mix of fertilizer, and the best sources.
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