Content
- 1 Breeding history
- 2 Description of the rose variety John Davis and characteristics
- 3 Advantages and disadvantages
- 4 Reproduction methods
- 5 Growing and Caring for a Canadian Park Rose John Davis
- 6 Pests and diseases
- 7 Application in landscape design
- 8 Conclusion
- 9 Reviews with a photo of the rose John Davis
Park rose varieties have gained wide popularity among gardeners. Such plants combine excellent decorative qualities and resistance to adverse conditions. Rose John Davis is one of the most prominent representatives of the Canadian park group. This variety is characterized by unpretentious care and resistance to frost and disease.
Breeding history
John Davis is a Canadian variety. The organizer of the work is the famous breeder Felicia Sveid. The plant was included in the international catalog in 1986.
When creating roses, John Davis crossed Rugosa and wild rose hips. The result is a bush that has a high decorative effect and low sensitivity to unfavorable factors.
Description of the rose variety John Davis and characteristics
It is a shrub with long, climbing shoots. The height of John Davis roses reaches 2 m.The plant grows rapidly in width - up to 2.5 m.
Annual growth of bushes - up to 40 cm
In the first 1-2 years, the shoots are short and erect, which is why the John Davis rose looks like a standard rose. Subsequently, the stems begin to tilt towards the ground. To maintain the neat shape of the bush, a garter to the trellis is required.
Shoots are strong, elastic with a dark green bark, not prone to lignification. Large thorns on the stems are practically absent. The foliage is dense, lush, along the entire length of the shoots. Plates are oval in shape, 5-6 cm each, with jagged edges. Leaves are matte, deep green.
The budding period begins in mid-late May and lasts throughout June. John Davis begins to bloom in the first month of summer. The buds open quickly and gradually wither by mid-July.
The plant blooms very abundantly, continuously. Inflorescences of 10-15 buds are formed on the stems. Flowers are densely double, rounded hemispherical, consist of 50-60 petals. The color is hot pink. The aroma is pleasant, strongly pronounced even at a distance.
The flowers of roses John Davis fade in the sun and turn ashy
The John Davis variety is characterized by high cold resistance. The plant tolerates frosts down to -29 degrees. In the south and regions of central Russia, it is not required to cover the bushes for the winter. Such measures are necessary only in Siberia and the Urals, where the temperature in winter is constantly negative.
John Davis rose bushes remain decorative until mid-autumn. In October, foliage begins to wither on the bushes, as a result of which the stems become bare.
The variety does not tolerate drought well. This is due to the large number of leaves that quickly evaporate moisture in summer. Waterlogging can also harm bushes, especially when the soil is compacted near the roots.
Roses John Davis are disease resistant. The risk of developing powdery mildew and black spot only exists in high humidity or during a drought.
Advantages and disadvantages
John Davis is recognized as one of the finest Canadian park varieties. The plant has many advantages over other species.
Among the main advantages:
- very abundant flowering;
- low exactingness to the composition of the soil;
- good winter hardiness;
- rapid growth of shoots;
- low sensitivity to infections;
- the possibility of growing as an ampelous plant.
John Davis does not need shaping pruning
The plant has several disadvantages. This should certainly be taken into account when planting this variety in the garden.
Main disadvantages:
- low drought resistance;
- the possibility of damage to pests;
- the need for a garter;
- relatively short flowering period.
Another disadvantage is the presence of small thorns. When working with a plant, precautions must be taken.
Reproduction methods
Shrubs from 3 years old can be divided. It is necessary to select one young stem, remove it from the trellis, dig in the rose and separate the shoot from the roots. In the future, plant the resulting cut in a new place, after soaking it in an antiseptic. At the same time, the stem must be cut off, leaving 8-12 cm in order to speed up rooting.
Division is carried out in spring or autumn after flowering.
Roses John Davis have long and springy shoots. Therefore, this variety is convenient to propagate by layering. It is necessary to select 1 stem, remove it from the trellis and bend it towards the ground. It is sprinkled with nutritious soil and watered. After 4-5 weeks, roots appear on the shoot. It is separated from the mother bush and planted in a new place.
Mature shrubs can also be propagated by cuttings. Shoots with 2-3 buds and several leaves are harvested as planting material. It is recommended to root them in a container with soil and then plant them outdoors in the fall.
Growing and Caring for a Canadian Park Rose John Davis
Planting is recommended in the fall so that the seedling takes root well before the onset of cold. If you plant a bush in the spring, a lot of nutrients will be spent on the growth of shoots and the formation of foliage.
For a park rose, John Davis is best suited to places with partial shade. It will develop worse in the shade.
The site for the rose is prepared in advance. They remove weeds, dig up the soil, and apply fertilizer. The bush requires a planting pit 60-70 cm deep and of a similar width. At the bottom, it is imperative to place expanded clay or crushed stone to drain the liquid.
The seedling is placed in a planting pit with a depth of 4-5 cm
The roots of the plant should be covered with a loose soil mixture from garden soil, turf, river sand, compost with peat. After planting, the seedling is watered. If necessary, a support is immediately installed next to it.
Caring for a rose John Davis includes the following activities:
- Regular watering, 1-2 times a week, as the soil dries up.
- Loosening the soil around the bush 1-2 times a month to a depth of 10-12 cm.
- Mulching the soil with bark, sawdust or peat.
- Sanitary pruning in the fall to remove wilted flowers, foliage.
- Hilling the bottom of the shoots to prevent overheating.
The John Davis variety responds positively to feeding. In the spring and when buds appear, nitrogen solutions are introduced. When flowering, fertilizers with potassium and phosphorus are recommended. In the fall, they give a complex composition in combination with humus or compost.
Preparation for winter involves the removal of shoots from the trellis. The stems need to be carefully twisted and placed at the base of the bush. To protect them from frost, the shoots are covered with dry foliage and covered with spruce branches.
Pests and diseases
The John Davis variety shows resistance to many infections. But the risk of infection cannot be completely excluded, especially if the rules for caring for park roses are not followed.
Possible diseases include:
- powdery mildew;
- rust;
- bacterial cancer;
- black spot;
- bark burn.
To prevent disease, it is necessary to spray the rose with a fungicide 2-3 times a year. Be sure to carry out processing in the fall.
Pests of climbing roses:
- spider mite;
- aphid;
- thrips;
- cicadas;
- pennies;
- leaf rollers.
It is advisable to use a liquid soap solution against insects. 200 g of grated laundry soap is diluted in 10 liters of warm water. The rose is sprayed with this means. The solution repels insects.
If affected by insects, the bush should be sprayed with an insecticide.
Special drugs work quickly. 2-3 treatments are enough to get rid of insects.
Application in landscape design
The John Davis variety is used for vertical gardening. Planting several bushes in a row allows you to create hedges with a height of 2 m or more. In such plantings, you can use John Davis roses, as well as other park climbing varieties.
When creating compositions, the plant needs to be given a central place. It is recommended to plant flowers and shrubs nearby, which are undemanding to the composition of the soil and lighting.
Astilbe, sage, juniper, lupins are well suited as neighbors. Armeria and carnations can be planted.
Landscape flower beds are created in the form of natural thickets. They can be supplemented with John Davis roses in combination with other undersized varieties.
Conclusion
Rose John Davis is recognized as one of the best Canadian park varieties. The plant has unique decorative qualities and is actively used in landscape design for vertical gardening. The variety is unpretentious and tolerates adverse conditions well. Therefore, it can be grown in regions with any climate.
Reviews with a photo of the rose John Davis
