Points to Consider When Transplanting Old Rose Bushes
Transplanting old rose bushes is an important technical method for rejuvenating the plant, but improper operation can easily cause root damage or even plant death. This article analyzes four core points to systematically explain the full process of operation from dormant period treatment to post-transplant care, helping gardening enthusiasts achieve safe transplantation.
Ⅰ. Choosing the Right Time for Transplanting Old Rose Bushes
1.1 The Best Dormant Period for Transplanting
When the temperature is consistently below 10℃ (November to March in the north, December to February in the south), roses enter a state of complete dormancy. At this time, the plant's metabolism is slow, and the survival rate of移植 can reach over 95%.
1.2 Emergency Transplanting Treatment Plan
Transplanting in the spring budding period requires配合 heavy pruning techniques: retaining the main stem 15-20cm, removing all new tender buds, and soaking the roots in a 200ppm ABT root growth powder solution for 30 minutes.
Ⅱ. Root Protection and Soil Ball Treatment
2.1 Standard for Pre-watering
Water thoroughly twice in the 3 days before transplanting: the first time until the water seeps from the bottom of the pot, then water again after 6 hours to ensure the soil moisture content reaches 60%-70%.
2.2 Soil Ball Stabilization Technique
Use the three-direction wrapping method to bundle the soil ball: soak the straw rope and wrap it in three directions (longitude, latitude, and diagonal) for 5 circles each, ultimately forming a protective layer with a diameter of ≥30cm.
Ⅲ. Key Post-transplanting Care Techniques
3.1 Control of Initial Watering
The initial watering amount equals 1.5 times the volume of the original soil ball, using a mixture of 800 times the concentration of carbendazim solution and 3000 times the concentration of naphthylacetic acid solution for irrigation, which both sterilizes and promotes new root growth.
3.2 Light Control Cycle
Keep the shading rate at 70% for the first 15 days after transplanting, gradually increase to 50% shading from the 16th to the 30th day, and resume full sunlight after the 31st day.
Ⅳ. Solutions to Special Problems
4.1 Response to Wilted Leaves
If the leaves droop, immediately apply a plastic bag for moisture retention: cover the plant with a transparent plastic bag and open the bag for ventilation for 2 hours before 10:00 daily.
4.2 Treatment of Root Rot
After excavating the rotting part, apply a methylthiophanate paste (drug:water = 1:3) to the wound and replace the消毒 matrix for re-planting.
By precisely controlling the timing of transplanting, scientifically treating the soil ball, and systematically caring for the plant post-transplant, the survival rate of old rose bushes can be increased to over 90%. It is recommended to use an electronic soil moisture meter to monitor soil moisture and regularly apply potassium fulvate to promote the development of fine roots, allowing precious old bushes to rejuvenate.