How to Care for Zingiberaceae荷花 in Winter
As a tropical ornamental plant, Zingiberaceae荷花 is favored by gardening enthusiasts for its elegant flower posture. However, due to its tropical nature originating from Southeast Asia, winter care becomes a challenge for planting. This article will systematically analyze the three core techniques for overwintering Zingiberaceae荷花, helping you master the key points of care in different climatic zones.
One, Key Points for Winter Pruning Care
1.1 Best Pruning Time
It is recommended to complete pruning 2 weeks before the first frost, with northern regions doing so in late October and southern regions delaying until early November. Stop watering 3 days before pruning to allow the cuts to heal naturally.
1.2 Scientific Pruning Techniques
Use a 45-degree diagonal cutting method, focusing on three types of branches: ① completely枯黄 old leaves; ② thin and weak lateral branches with a diameter less than 3mm; ③ leaves with disease spots. Retain the main stem and 2-3 strong lateral branches, keeping the pruning amount within 1/3 of the total plant.
Two, Indoor Overwintering Environment Control
2.1 Temperature Gradient Management
Set a day-night temperature difference: maintain 18-22°C during the day and 12-15°C at night. When using a heating mat, ensure a 5cm gap between the pot bottom and the heat source.
2.2 Light and Water Control
Ensure 4 hours of direct sunlight daily, with a 50cm distance from the supplemental light source. Extend the watering cycle to 15-20 days/time, using the immersion pot method, with each immersion not exceeding 15 minutes.
Three, Special Care Considerations
3.1 Nutrient Management Forbidden Zone
Strictly stop fertilizing from November to February of the following year, with the last autumn fertilizer applied in late September using a slow-release fertilizer (NPK 10-15-10).
3.2 Disease and Pest Prevention
Focus on red spiders and gray mold, spraying the leaf backs with a garlic extract solution (1:50) monthly, and maintaining an environmental humidity ≤60%.
By implementing the three major measures of scientific pruning, precise temperature control, and reasonable water control, combined with fertilizer pause management, Zingiberaceae荷花 can safely overwinter. The Yangtze River Valley can use double-layer insulation greenhouses, while northern regions are recommended to use indoor supplemental lighting. After the spring, when the nighttime temperature stabilizes above 15°C, it can be gradually moved outside for care.