Mummy berry forecast and Botrytis blossom blight May 20th

Washington County
ONLY later developing fields or wet fields re likely to have mummy berry cups still producing spores. Our mummy berry site in Jonesport still has ONE mummy berry cup producing spores! So other fields in early bloom may still have cups present. The majority of fields in Washington county are DONE for mummy berry disease.

In fields that still have mummy berry cups, there was an infection period from Wed. May 19th from around 10am through Thursday night.

IF your field is likely to still have cups AND your last application of fungicide was BEFORE Wednesday May 12th then you will need to apply a fungicide treatment to kill off any infection of your plants.

If your field is NOT likely to still have cups OR your field still has cups AND your last application of fungicide was ON or AFTER Wednesday May 12th, you do not need to apply fungicide to control mummy berry disease.

There has not been a long enough wet period to cause infection by Botrytis blossom blight in most fields. If you have brown flowers in your field, please see previous information on "Damage to Blueberry flowers: Is is Frost or Disease" to confirm you have blossom blight.
IF you are certain your field has a yearly history of getting Botrytis blossom blight from fog events AND you confirm you have the disease on early blooming clones, ONLY then would you want to consider applying fungicides for Botrytis blossom blight.

Note: I need more growers to put mummy berry plots out in their fields and track the cups to get a more accurate idea of where and when the cups are finished in different fields. Please call me or email me if you are interested in putting out some mummy berries for next year and I will help you set them up.