The current assessment of ‘Sweetheart’ sweet cherry development and freeze tolerance at MCAREC. The left axis shows the ambient air temperature and the predicted lethal temperature for floral primordia (solid lines). The right axis shows the hours of developmental time for the current and seasonal averages of Sweetheart at MCAREC (dotted lines).
A close-up of MCAREC is shown below.
Other location, station and cultivar data is being prepared.
At present, sweet cherry at MCAREC is out of ecodormancy and about 2 weeks ahead in development compared to a 5-year average.