The transition to spring is a nervewracking time for me as I monitor the weather forecasts in March. At this point in the season, the hydrangea buds are swollen and in some cases they have opened and I can see fresh green leaves. A week ago, there were five consecutive nights of a killer frost. One night got down to 17 degrees. I have read that if hydrangeas get frostbitten, they won’t bloom—unacceptable!
The Macrophylla hydrangeas have the biggest buds and many leaves, but the Panicle hydrangeas do not. I think the Panicles will survive the cold, but the Macrophyllas probably won’t.
I bought extra row cover and covered as many plants as I could. Now, over a week later, the temperature is going below freezing again for four more nights. The Vernal Equinox begins in five days, but that doesn’t matter. Winter is still here. I covered the Macrophylla plants again tonight. It will be worth it this summer to see the amazing blooms!