When to Graft Shanyuxiang
As a high-quality rootstock of the Rosaceae family, the timing of grafting Shanyuxiang directly affects the survival rate and plant growth. Mastering the seasonal characteristics and the coordination with the scion's condition can make the grafting work easier and more efficient. This article will systematically analyze the key points of grafting Shanyuxiang from three dimensions: time window, rootstock characteristics, and variety matching.
One, Seasonal Selection for Grafting Shanyuxiang
1. Spring Branch Grafting Golden Period
Implementing branch grafting before the sap flow in February to March is ideal, as the cambium cells are active at this time, making it easier for the rootstock and scion to produce callus. It is recommended to select robust branches with a diameter of over 1 cm, using the split grafting method and sealing the cut with plastic wrap.
2. Summer Young Branch Operation Points
Performing young branch grafting when the new shoots are semi-woody in June to July requires maintaining over 85% air humidity and immediately bagging the graft to keep it moist after grafting. Special attention should be paid to avoiding the plum rain season to prevent moldy joints.
3. Best Window Period in Autumn
When the day-night temperature difference is stable at 15-25°C in September to October, the grafting success rate can reach over 92%. At this time, there are fewer diseases and pests, and the scion has sufficient nutrient reserves, which is conducive to healing before winter.
Two, Analysis of Shanyuxiang Rootstock Advantages
1. Wild Germplasm Characteristics
As a native Rosaceae plant, its developed root system can enhance the drought resistance of the scion, and the large木质部 vessels are more conducive to water transportation, especially suitable for grafting ornamental flowers that require a lot of water, such as roses.
2. Variety Matching List
Roses: Particularly suitable for climbing roses and tree rosesRoses: Both classical roses and modern hybrid varietiesMockorange: Achieving a landscape with two-color flowers
Three, Key Points of Post-Grafting Maintenance
During the joint healing period, it is necessary to maintain 60% shading, and gradually increase sunlight after 15-20 days when new buds sprout. For seedlings grafted in spring, it is recommended to retain the rootstock suckers for 1-2 months as nutrient branches, and prune after the scion is fully lignified.
Mastering the time code for grafting Shanyuxiang, combined with scientific variety selection and maintenance management, can not only increase the survival rate to over 90%, but also cultivate high-quality plants with strong resistance and doubled flowering. It is recommended to prioritize autumn for large-scale grafting operations based on regional climatic characteristics.