Figure
1. Post- Pollination and Green Fruit Stages
Good afternoon, everyone,
We are experiencing a very long and protracted bloom and
pollination season due to uneven bloom development both within fields and
across production regions. Some early fields received commercial bees as early
as the week of May 18–22, and we are still observing white-blooming patches
that require pollination.
The best way to describe the 2026 bloom season is that
flowering is occurring in multiple stages. This may be a consequence of last
year's drought, which resulted in differences in plant health, fruit bud size,
and nutrient reserves. Please continue to monitor your blueberry fields
closely, as this is a good time to assess crop stage, blight infection, and
overall yield potential. Many fields could still benefit from another week or
more of strong pollination activity.
Monilinia Blight Infection Updates
We have been observing higher levels of Monilinia blight
infection associated with the continued emergence of F2 stages, which are also
appearing unevenly, similar to bloom development. In addition, input concerns (none
or single application) and limited spray windows appear to have reduced the
effectiveness of fungicide application, leaving some susceptible bud stages
unprotected over the extended infection period.
Botrytis Blight Infection Updates
With the prolonged bloom season, concerns about Botrytis
blossom blight have increased because flowers remain susceptible for a longer
period. However, most of the damage symptoms observed to date have been
associated with Monilinia blight. I have observed some Botrytis infection
symptoms, primarily in very dense canopies and only affecting a small number of
flowers (Figures 2 and 3).
The extended bloom period may also influence disease
development and delay the appearance of post-infection symptoms. We will
continue to monitor conditions and provide updates as additional information
becomes available.
Have a great week!
Hugh
June 15, 2026
Figures 2 and 3.
Botrytis Blossom Blight Infections
Table 1. Wild Blueberry Weather Station GDDs Updates
