Jonquil progress --- and --- a risk!

Jonquils in left and lower right.
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Upper right: Deciduous trees like one of our 1000s of Maples (seen here) have already been hit with below 0 overnight temps throughout central and northern Ontario.
RISK: -3°c forecasted overnight.
This could destroy juvenile leaves and crops near-province wide (excepting southern Ontario like Toronto). This will wipe out leaf cover!  Trees can push out an emergency 2nd leafing... (smaller, weaker leaf).