Rosa davurica is an excellent tree species for vertical greening and decoration, with lush foliage, early summer flowering, elegant fragrance and lasting flowering period.
It can be used to arrange flower stands, flower galleries and flower fences, and can also be planted beside fences and rockeries, and can also be trimmed.
Rosa davurica is a deciduous shrub or vine with a plant height of1~ 2m.
Stems slender, prickly, creeping or climbing.
Odd-pinnate compound leaves, alternate, with 5 ~ 1 1 leaflets, obovate to elliptic, with sharp or obtuse apex, serrated leaves and hairs on both sides.
Conical corymb with fragrant white or pinkish flowers, flowering from June to July.
The fruit is nearly spherical or oval, about 6 mm in diameter, and the color is the same as brown and red. The fruiting period is 9 ~ 1 1 month.
Common cultivated varieties and varieties are: pink rose with large flowers, 3 ~ 4 cm in diameter, single petal, pink to rose red, and several or more flowers form a flat-topped umbel; Lotus-shaped rose, double, pink clusters; Seven Sisters, double crimson, often 6 ~ 7 flowers in a flat corymb; Bai Yutang, with few thorns on its branches, has white flowers, double petals, multiple clusters and delicate fragrance.
Wild roses are strong, like sunshine, and can also tolerate semi-shade.
Cold tolerance, drought tolerance.
It has strong adaptability to soil and can grow normally in heavy soil, but it grows best in deep, fertile and loose soil.
Avoid waterlogging, which is easy to cause root rot.
Wild Rosa multiflora and its varieties and variants, as well as different varieties and strains, have no special climbing organs and weak climbing ability. In garden applications, hedges are mainly used, and can also be used for hanging, flower balls, flower doors and other shapes.
Pruning mainly in winter should be carried out after the growth stops completely, not too early. Pruning too early is easy to sprout new branches and suffer from freezing injury.
When pruning, the over-dense branches, dead branches, over-flourishing branches and branches of diseases and insect pests are cut off from the stems, and the number of main vines is controlled to make the plants ventilated and transparent.
When pruning main branches and side branches, we should pay attention to leaving side buds to make them grow to the left and right.
Prune the new branches that were not lignified in that year, and keep the strong buds on the lignified branches so as to make new branches.
Summer pruning, as a supplement to winter pruning, should be carried out in June-July, and branches that grow inappropriately in spring should be cut off from the trunk or their growth and elongation direction should be changed.
Seven Sisters and others can bloom many times a year, which belongs to the multi-differentiation type. After flowering, there are 2 ~ 3 buds at the base of the flower branch, which can continue to bloom after about 1 month, and the rest of the old branches are drained as appropriate.
For summer and autumn differentiated varieties, the branches that have blossomed should be thinned after flowering, leaving the branches that have not blossomed to bloom in the next year.