The degree of sensitivity to frost is determined by the most sensitive part of the plant, i.e. its root ball.In a pot, surrounded by a relatively thin layer of earth, its sensitivity to frost is much greater than in the ground.Therefore, before the onset of frost, we need containers with perennials (e.g. cranberry, funka, narrow-leaved lungwort) and shrubs (with roses, boxwood, hydrangea, varieties of common ivy) to protect.
The easiest way is to put them in a wooden box filled with dry leaves or dry sand. You can also cover the box with polystyrene or thicker bubble wrap, and then place the pots in it and pour dry peat into the free spaces.On frosty days, especially when there is no snow, you also need to cover the above-ground part plants with conifers.
Protected plants also need water in winter, of course, much less than in summer.We water them when the soil in the pot is not frozen.We protect evergreen balcony and climbing plants against severe frost and drying winter sun with straw or reed mats, which we remove on frost-free days.
