John KempfRegenerative Agriculture Entrepreneur

Pinion outperforming conventional fungicides

29 Jun 2026 · 1 min

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At Orchard View, pinion-treated Sweetheart cherry trees show flat, gray, inactive powdery mildew colonies instead of the typical white, fluffy growth, even on the most susceptible shoots. Despite a rainy, humid season with heavy disease pressure, the mildew isn't advancing onto fruit.

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All right, we're out here at Orchard View looking at our pinion trial. This is the treated side. These are Sweetheart cherries, very susceptible in a very susceptible area, very susceptible to powdery mildew. And you can see where there's been powdery mildew here, but it's just not very active. It all looks very flat and gray, and none of it is white and fluffy. Like, even that, it's like it's there, but it's not active and it's not moving. None of it's getting in the fruit. And this is just a shoot from the very center of the tree. Which is like the most susceptible spot. We've had a bunch of rain this season and just a lot of humidity, but here's a good example of it. That's how it looks right now, and none of it is really active and thriving.