8 Greenhouse Tomato Mistakes That Could Ruin Your Harvest -- And How to Fix Them

So you finally set up that greenhouse and planted your precious tomatoes. You're already picturing juicy red fruit piled high in a harvest basket, right?

But wait... why do your leaves look a little yellow? What's that fuzzy white stuff on the stems? And why do your plants look like they're trying to escape through the ceiling?

Don't panic. You're probably just making one (or a few) classic greenhouse tomato mistakes. Don't worry---I've made them too (ahem, all of them). Let's walk through the top 8 missteps that could turn your tomato dreams into a squishy, fungal nightmare---and more importantly, how to fix them.