Too early opening of roses can lead to their freezing, and later – cause damping. Therefore, in order not to harm the health of the bushes, and, in addition, to preserve and increase their decorative effect, you need to know when to open roses after winter.
Competent care will help ensure the splendor of flowering roses
When can you open roses after winter in 2021
An untimely or incorrect opening can lead to the death of even those roses that were prepared by all the rules for the winter season. High humidity and return frosts in spring sometimes cause much more damage to plants than winter cold.
If you remove the shelter from roses in the spring too early, when the earth has not yet warmed up well enough, and there is still a chance of the air temperature dropping below 0 ° C, the plants are at risk of freezing. This is due to the fact that the kidneys, which wake up quickly enough with the arrival of spring heat, die when the air temperature drops to -6 ° C.
A no more attractive picture is obtained when the protective cover is removed later than the deadline. As a result of intensive evaporation of moisture by the vegetative parts of a plant located in an enclosed space, an excessive increase in soil moisture occurs. In combination with oxygen deficiency, this often causes the appearance of pathogenic microorganisms, including mold.
Shelter made of agrofabric will help protect roses from the cold
At what temperature can roses be opened in spring
If the winter was not very frosty, and the spring was abnormally early, it is not easy to determine the date on which roses should be opened after wintering.
The main indicator that it is time to open roses in the Moscow region and other regions in 2021 is the air temperature. In the daytime, it should be 8-15 ° C of heat, and in the dark – not to fall below – 2 ° C.
When to open climbing roses
Long stems of climbing roses are removed from the support in autumn, laid horizontally, covered with sand or soil, and then covered with straw, fallen leaves or spruce branches. This design is completed by agrofibre, cardboard or roofing material, fixed on a special frame.
Climbing roses with the onset of spring open in the following sequence:
- Approximately in the second half of March or early April (depending on the region, as well as air temperature), the covering material is removed, the upper layer of the shelter that has compacted during the winter is loosened and the flowers are covered again, leaving small windows for ventilation. This will provide access to fresh air and the evaporation of unnecessary moisture. At night, to avoid the damaging effects of possible frosts, the openings are closed.
- After a week of partial ventilation, one side of the frame is completely opened on the east or north side.
- After the next 2 days, subject to a constant positive daytime temperature, the winter shelter is finally removed and the top layer (sawdust, mulch, spruce branches, etc.) is removed.
- Roses are dug up and raised on supports only when the threat of residual frost has passed.
The climbing rose is left in a horizontal position until May
When to open standard roses
Standard roses are in most cases tall bushes with an extensive crown. In preparation for the winter season, they are bent to the ground, covered with a layer of soil and covered with a roofing material fixed on the frame, a dense plastic film or agricultural fabric.
Standard roses should be opened in the Moscow region and other regions only after the air has warmed up to a temperature of at least + 8 ° C and the topsoil has thawed.
Plants are released from winter coverage in the following sequence:
- During the period of active melting of the snow cover (second half of March), its remains are removed from the shelter, after which drainage grooves are made.
- Closer to the second half of April, they begin to air the roses, opening the side parts of the covering frame for this. Begin airing from 2 hours, every day increasing the duration of the procedure and the degree of opening.
- After about a week, the covering frame is completely removed, the roses are dug up and lifted from the ground.
After winter, rotten and dry stems may appear.
When to open cuttings
Some gardeners plant flower cuttings in open soil in autumn and cover them with glass jars to create a greenhouse effect, that is, they build a kind of mini-greenhouse. For the winter, they, along with banks, are additionally covered with fallen leaves, spruce branches, straw or sawdust.
Experts do not advise rushing to release such plantings in the spring. It is better to engage in discovery when the weather is consistently warm, around May. In the process of opening the cuttings, a layer of mulch is removed, the jar is removed and the shoots are watered with water at room temperature.
Opened cuttings need to be shaded
When to open roses after winter in the Urals
Ural winters are severe, and not every Ural spring is warm. For this reason, it is recommended to open roses after wintering in the Urals no earlier than the second half of May. By this period, consistently warm days are already established, and the soil thaws quite well, which makes it possible to wake up not only the kidneys, but also the roots of the plant.
They open roses in the Urals in the same way as in other regions: first they air them for several days, and then they completely remove the shelter.
When to open roses after winter in Siberia
In the gardens of Siberia, as well as in the Urals, the optimal time for the spring opening of roses is the period from about May 15 to early June. As a rule, there is no snow by this time.
After several days of airing, the top layer of the shelter (agrofabric, spruce branches) is removed, and after a week, excess soil is removed, which also served as protection from the cold.
After full disclosure, the bushes are pruned, removing dry and rotten stems, then watered with warm water to finally awaken the root system.
When to open roses in the Moscow region after winter in 2021
In central Our Country, roses open from about April 12-16. It was at this time that the opening of roses took place after the winter in the Moscow region in 2019.
However, given the anomalously early spring of 2021, plant opening times may be earlier this year. The first and main sign that you can already open roses in the Moscow region is the establishment of consistently warm weather (air temperature not lower than + 8 ° C).
The opening of roses in the spring in the Moscow region in March 2021 should be done gradually. First, the bushes are ventilated, briefly opening the edge of the shelter, and after about a week they are fully opened and the ornamental plants are freed from the layer of soil covering them.
It is better to open roses in cloudy warm weather.
How to open roses in spring
All types of roses open gradually after winter. First of all, in the first half of March, when solar activity increases and there is a possibility of exposure of protective shelters, a layer of snow should be thrown over them. This will prevent premature heating of the air inside the structures and reduce the risk of plant decay. In the last days of March, the snow that did not have time to melt is removed from the shelter.
The protective cover is removed when the snow melts intensively, even in shaded areas. This happens around the end of March or April (depending on the region).
Do not forget that during a period of sharp warming, the soil can remain frozen for a long time. In order to accelerate thawing, the soil in the root zone of ornamental bushes is sprinkled with wood ash.
It is not recommended to open roses in spring after winter shelters:
- in case of snow on the ground surface;
- with a high probability of night frosts;
- at a daily temperature below the established norm (+ 8 ° С);
- without prior ventilation.
The first discovery of roses
The first opening is carried out in the form of ventilation, which is done at a positive temperature. To do this, in good weather, open the ends of the shelter. After 2 hours, the ends are covered again, but small holes are left through which air will enter the structure. The duration of ventilation increases with each subsequent day. In addition, gradually expand the degree of opening.
You can’t take cover right away.
Complete removal of cover
To facilitate the adaptation of roses after the cold, the shelter is removed gradually, within 3 days increasing the openings for ventilation of the plants. After that, subject to stable warm weather, the roses open completely.
After the ornamental bushes are fully opened, they are dug up, that is, the soil covering them is moved away from the stems, which also served as protection against freezing.
After the rose bushes are fully opened, sanitary pruning of the bushes is performed, during which dry and rotten stems are removed. In addition, for the prevention of fungal diseases, roses are treated with Bordeaux mixture.
Now that the ground parts have finally woken up, it’s time to think about the roots. To awaken them, the bushes are watered with warm water. A week later, the bush is irrigated again, but this time nitrogen fertilizers are added to the water.
After two weeks, the shelter from the sun is removed, and the roses are once again treated with preparations that contain copper.
Conclusion
Every gardener needs to know exactly when to open roses after winter. Proper release from winter protection will help maintain the health of ornamental plants and ensure their lush flowering.
