Powdery Mildew Spot Treatment

We see the highest incidence of powdery mildew amongst our tunnel crops in the spring time when temps are cool, humidity is rising, and daylight hours are still short.

It’s overtaken an entire tunnel planted full of ranunculus here, before. It was a disaster. We failed to vent the tunnel well. We didn’t monitor temperatures. Everything had to be cleared out and solarized. I’ve grown to be extra wary of it.

We look daily for signs and spot treat powdery mildew at first sight.

In the summertime, we like to use diluted milk (regular milk from the grocery store) in the unheated tunnels. I’ll share more about it this season when we’re treating the roses. It’s great for that collection. But it’s stinky. I prefer the mint product in a space where we’re working for hours a day (as opposed to treating and leaving). It’s pleasant to be around.

Petra Tools is back with a special 10% off discount for Pro Platform members. Use the discount code LFFPRO at checkout on PetraTools.com to save 10% on your entire order.

Note: We have no sponsorship or arrangement for compensation in any form from Petra Tools or any other product or service that I share on the Pro Platform and we won’t seek any such contracts. I use their tools and like them. I’m glad we’ve been able to get this code to lower the costs to members.