Strawberries and Caneberries

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Leaf blotch caused by Zythia fragariae in strawberry. Note the purple margin on the edge of the blotch.

Much Ado about Zythia

March 21, 2019
By Mark P Bolda
I've recently had a number of calls concerning an increasing amount of leaf blotch on strawberry. This makes sense, since we've had continuing rains and the subsequent lengthy periods of free moisture coupled with the warming weather ideal for propogation of this pathogen.
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Powdery mildew advancing upon a raspberry fruit. Notice the evidence of disease on the petiole. Photo courtesy Ted Swartzbaugh.

Powdery mildew on raspberry fruit

March 7, 2019
By Mark P Bolda
Here's a photo submitted by reader Ted Swartzbaugh down in Ventura county of something you don't see too often. Powdery mildew in raspberry which has advanced to the fruit, and if you look close you can even see evidence of the disease on the petiole.
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Heavily reverted blackberries depicted in high end holiday retail catalog.

Whoopsa!

January 28, 2019
By Mark P Bolda
Just thumbing through a mail order catalog from a high end retailer yesterday afternoon for a Valentine's Day gift (don't forget all that this day is also our big annual strawberry production research meeting in Watsonville!) for my one and only, when my eyes lit upon the arresting photo below.
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