Cooperative Extension: Maine Wild Blueberries

Waldo, Lincoln, Knox, Hancock and Washington Counties There was enough fog to cause an infection period at all of our monitored weather stations last night.  If you are farther inland you may have missed it, but as far inland as Hwy. 9 Downeast and Appleton (about 12 miles from the coast), we have had an […]

Knox and Waldo Counties There was an infection period recorded at our weather station in West Rockport (Knox County) from Sunday, May 5 at 9:00 p.m. to Monday, May 6 at 8:40 a.m.  The recording at our Appleton weather station showed temperatures that were too cool for an infection period to have occurred. If you […]

Mature mummy berry cups have been found in most blueberry areas. Some fields have their first batches of mummy berry cups starting to dry up.  New pinheads are also coming along so the season is still on-going. I expect many fields now have over 40% of susceptible stems and so they have enough plant tissue to […]

I apologize for the lateness of this forecast, I have had a bit of difficulty getting data gathered from the weather stations this first time this year. In many areas, the plants are getting close or now have enough susceptible tissue to be concerned about infections by the mummy berry fungus.  Once your plants have […]

In all blueberry areas, it has been a slow start to the season.  I do not expect this current rain, which is predicted to last through Thursday, will cause many infections since there are very few mature cups present to produce spores and the majority of the plants are not far enough along to become […]

Plants are NOT susceptible until at least 40% of stems are at the F2 stage of flower development when the flowers look like crowns (see picture below). Numerous mummy berry pinheads have been found on Thursday, April 18 and 19 in mummy berry plots in North Ellsworth,  Jonesboro and East Machias. Single pinheads have been […]