How to survive the winter in northern ground-planted roses (wintering cultivation techniques for outdoor ground-planted roses)

How low of a temperature can roses withstand

Different varieties of roses have different degrees of resistance to low temperatures. There is no specific data on this, but based on the experience of netizens, ground-planted roses can safely survive the winter at around -20 degrees Celsius.

Nevertheless, it is necessary to take some measures to be on the safe side. There are two main tasks for ground-planted roses to survive the winter: pruning and keeping warm.

Winter pruning of ground-planted roses

Winter pruning of roses should be done after the leaves have completely fallen and the nutrients have completely returned, which can reduce the waste of nutrients. Generally, pruning can be started one week to half a month after the leaves fall.

The pruning of ground-planted roses, shrub roses and climbing roses is also different.

1. Pruning shrub roses

For shrub roses, more flowers bloom on annual branches, and more flowers can be produced only if more new branches are produced, so shrub roses are generally pruned heavily in winter.

Keep 3-4 main branches per plant and cut them short, keeping the height at 15-20 cm. This way the nutrients of the rose are more concentrated, and stronger side branches can grow in spring.

2. Pruning climbing roses

Climbing roses are large in size, and most of the flowers bloom on the branches of the previous year, and not many flowers bloom on new branches. Therefore, heavy pruning is not suitable. After the leaves fall in winter, you only need to cut off some overcrowded branches and some dry branches.

How to keep roses planted in the ground warm in winter

In areas south of the Yellow River where the temperature is not lower than -10 degrees Celsius in winter , you can safely spend the winter without taking any measures after pruning . In areas where the temperature is lower than -10 degrees Celsius, you need to keep warm.

Roses are harmed by frost in winter, but not many of them are actually frozen to death. Instead, most of them die because their branches are dried up by the wind. Therefore, the key to keeping warm in winter is to protect against wind.

To keep ground-planted roses warm, burying them in soil is generally the most effective way. After pruning, cover the roses with soil. When the temperature rises in the spring of the following year, you can just dig up the soil.

After the soil is covered, you can use straw to cover it if you are worried. If climbing roses cannot be buried with soil, use straw or stalks to cover them, and then cover them with a layer of plastic paper .