When to Transplant Hydrangeas
As a classic garden flower for landscaping, the timing of transplanting hydrangeas directly affects their survival rate and the quality of blooming. Mastering the correct transplanting time window, combined with scientific operational methods, can make the spherical inflorescences bloom more fully and vividly. This article will systematically analyze the complete process of transplanting hydrangeas from seasonal selection to operational details.
One, The Best Time for Hydrangea Transplanting
1.1 Advantages of Transplanting in Dormancy
In the northern regions, it is advisable to operate before the end of March to April, before germination, when the plant is in a dormant state, the sap flow is slow, and the root damage recovers quickly. In the Yangtze River Valley, it can be moved up to the end of February, combined with mulching to prevent late spring frost.
1.2 Techniques for Transplanting After Flowering
It should be done in September to October after the flowers have faded, retaining 1/3 of the old branches to maintain photosynthesis. Special attention should be paid to avoiding continuous rainy weather during the plum rain season in the East China region to prevent root rot.
Two, Five Key Points of Hydrangea Transplanting
2.1 Root Ball Treatment
When digging, retain a root ball with a diameter of 30 cm, and wrap it with burlap for fixation. For old stakes over five years old, the root can be cut annularly six months in advance to promote new fibrous roots.
2.2 Scientific Pruning Standards
Remove diseased and crossed branches, retain strong main branches. The pruning amount should not exceed 40% of the total branches, and apply wound healing agent to the cut surfaces to prevent infection.
2.3 Preparation of Planting Hole
Mix garden soil and leaf mold soil in a 1:1 ratio, add 100g of bone meal to each hole to adjust the pH. Maintain the planting depth with the original soil mark 3 cm above the ground to prevent waterlogging.
2.4 Maintenance During the Acclimatization Period
Set up a shade net to maintain 60% light transmission, and mist twice a day to increase humidity. After two weeks, apply seaweed fertilizer, combined with EM bacteria solution for root irrigation to promote the development of mycorrhizae.
2.5 Disease Prevention Plan
Immediately after transplanting, spray a compound agent of benomyl and validamycin, and reapply after 10 days to effectively prevent and control diseases (T-J) and root rot.
Three, Post-Transplant Management of Hydrangeas
Newly transplanted plants need to go through one complete growth cycle to fully recover. In the following spring, when the buds emerge, apply potassium dihydrogen phosphate foliar fertilizer to promote bud differentiation. Through scientific transplanting and meticulous care, hydrangeas can quickly establish a root network in the new environment and continuously bloom large flower balls.