News and Stories

UPDATE: Cold Temperatures in the San Joaquin Valley

February 20, 2018

Morning temperatures in the San Joaquin Valley, California’s primary citrus growing region, dropped into the mid-20s last night, February 19. Tonight’s temperatures are expected to be in the mid- to upper 20s. Freeze warnings are in place for most of the San Joaquin Valley through Wednesday.

  • Currently, no problems been reported to lemon nor orange crops due to fruit maturity and high sugar content; the biggest threat is for Mandarins and Clementines, which are more susceptible to freeze damage due to thinner skin
  • Citrus growers are using irrigation water and wind machines as frost prevention tools to raise temperatures a few degrees, decreasing the risk of damage to their crop
  • Temperatures must be below 28 F/-2.2C for a minimum of 4 hours to cause damage to crops
  • A heavy freeze will rupture internal cells, causing fruit to dry out and become unmarketable

Please contact your Markon customer service representative for more information.

©2018 Markon Cooperative, Inc. All rights reserved.