Even those with a natural green thumb are not immune to gardening mistakes—if you are a novice, the likelihood of an error may be even higher. And as Lara Hermanson, gardener and co-owner of Farmscape, an urban farming company in San Francisco and Los Angeles warns, “Gardening is not always a cheap hobby.” This means mistakes are not only frustrating, but potentially expensive, too. “Home gardeners can rack up big bills by shopping at a nursery, only to get it home and have items fail, without knowing why.” But this doesn’t mean the garden-curious shouldn’t try—especially if you’re dreaming of fresher than fresh produce this coming spring in summer. Rather, they should know common pitfalls so they can strive to avoid them. And if you do make a misstep, know it’s part of the learning process and there’s always room to grow (sorry, it had to be done). Below, we chat with experts about common garden mistakes plus their best tips to ensure all your stalks grow strong and hearty.…