February 17, 2016

This report covers conditions and observations made on Tuesday, February 16, 2016.

Taken in Colusa County, the first photo in today’s report shows the developing bloom in the Fritz variety in the Williams area, followed by down-the-row shots of a Nonpareil and Butte orchard in the Durham area of Butte County and a Nonpareil and Aldrich orchard in the Orland area of Glenn County.

Bloom progression in the northern region continued to make big strides as above-normal temperatures remained overnight and throughout the day Tuesday. Daytime temperatures continued to push into the mid 70s and early morning temperatures remained in the upper 40s. With these optimal conditions, observers reported 8 hours of very good bee activity.

Nonpareil and its California-type pollenizers are approaching peak bloom as flowers have opened rapidly over the past 36 hours. The warm temperatures have also accelerated bloom in the later blooming Butte and Padre varieties as they are now showing a substantial number of flowers presenting for pollination throughout the region. The Sonora and Peerless varieties have likely achieved peak numbers of flowers presenting for pollination, and measurable petal fall is being reported along with traces of flowers that have lost all of their petals.

With rain in the forecast for Wednesday and Thursday, growers have worked hard to get fungicide treatments across their orchards using both air and ground applications. Many growers are also putting out fertilizers so that they can be incorporated into the soil with the upcoming precipitation. Rainfall and strong winds may accelerate petal fall in earlier blooming varieties, and growers are waiting anxiously to find out the severity and impacts of the upcoming weather.

By Jereme Fromm


High Temperature: 77°F
Low Temperature: 45°F
Wind: 2 to 5 mph
Sky Conditions: High, thin clouds
Bee Activity: 7 to 8 hours of very good activity
Current weather at the National Weather Service
Ryan Christy
Dennis Meinberg

Click an image to enlarge it.

Bloom Status

VarietyDormantGreen TipPink BudPopcornBloomPetal FallJacketOut of Jacket

Data reflects a composite of the growing region.

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