Large-leaved hydrangea overwinters successfully under reliable cover, which should not be removed in a hurry.
Melted snow is not a signal to remove the cover. It is necessary to wait until the threat of frost has passed.
Otherwise, the flower buds may freeze. Then you may not see abundant flowering this season.
The large-leaved hydrangea is gradually prepared for life without shelter. The plant is opened during the day and closed again at night.
Therefore, the first thing to do in the spring is to gradually remove the cover from the hydrangea. As the temperature rises, the film or roofing felt is replaced with a breathable non-woven material. With the arrival of stable heat, the cover is completely removed.
If there was little snow at the end of winter, the hydrangea will have to be watered from the first month of spring. This is a moisture-loving plant, so the bushes need abundant watering if the soil is dry. To keep the moisture longer, the plants are mulched with sawdust or peat.