Sunday, June 26, 2011


Rain and drizzle during a very rare early June storm

June has been a very odd month in terms of weather.  We are accustomed to the extraordinary micro-climates in the Bay Area where it is 58-degrees at the coast and scorching to well over 100-degrees a few miles inland.  Typically, the golf course falls in the middle of the two extremes, making it one of the most desirable climates in the world with 70-degree weather dominating the forecast.  However, turfgrass likes consistency and when it goes from rainy at the beginning of hot...back to cool and foggy, the grass doesn't know if summer is coming or going.  It is rare to receive rain during the month of June.  You have to go back to 1964 to see the last significant rain event for June...after that the last time this area recorded over 2-inches of rain in June was back in 1884!

This random, inconsistent weather can create undesirable response in turfgrass.  For instance, earlier in June the green surfaces were eliciting extreme seedhead production.  As we approach the end of June, the greens are fairly "clean" following the application of a product that stops seedhead production.  The annual poa will develop seedheads as a stress response, especially if it has been cool, then a spike in heat.  The seedheads most often affects the late-afternoon players as the "puffing up" of the poa can create bumpy greens and green speeds that are slower than desired.

While we do not experience many of the summer weather extremes as other parts of the country, we still have issues and the most recent forecast has rain expected on the 28th or 29th of June, officially allowing us to rename this month as Junuary.    

Intense seedhead production on the 18th green in early June prior to an application of Proxy / Primo

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