How to Care for Narcissus During Dormancy
As a representative of traditional Chinese New Year's flowers, the care of narcissus during its dormancy period directly affects the quality of flowering the following year. Mastering the care techniques for the special summer dormancy stage, combined with scientific post-flowering management, can help the bulbs maintain vigorous vitality.
Three Key Elements of Dormancy Care
Water Control Techniques
Water should be cut off immediately after the leaves wither completely, as the roots stop absorbing water at this time. It is recommended to use a tilted pot to prevent water accumulation, keeping the substrate slightly moist. In dry northern regions, moist moss can be used to cover the pot surface for moisture retention.
Fertilization Pause Strategy
Fertilization is strictly prohibited during the dormancy period, especially avoiding nitrogen fertilizer residue. It is recommended to stop fertilizing 45 days before the end of the spring growing period, allowing the plants to naturally consume nutrients and transition into dormancy.
Environmental Control
The optimal storage temperature is between 10-15°C. In the south, a combination of air-conditioned rooms and light-blocking nets can be used for double temperature control. It is necessary to keep the day-night temperature difference within 5°C to prevent the bulbs from dehydrating due to excessive temperature differences.
Key Steps for Bulb Storage
Low-Temperature Treatment Technique
After lifting the bulbs, retain 2cm of roots, wrap them in newspaper, and place them in a plastic bag in the refrigerator's vegetable compartment. It is recommended to check the bulbs' condition monthly and treat any mildewed bulbs immediately with carbendazim.
Management Points for Revitalization Period
Gradual Awakening
After taking out the bulbs in autumn, they need to adapt to the environment for 3 days, first soaking them in warm water at 25°C for 2 hours to activate the roots. Initially, use half the amount of nutrient solution to water the bulbs to avoid burning the new rootlets with high concentration.
Light Transition Plan
Place the bulbs near the north-facing window for scattered light for the first two weeks, move them to the east-facing balcony in the third week, and they can be exposed to full sunlight in the fourth week. The intensity of light should be gradually increased to avoid leaf sunburn.
Water and Fertilizer Coordination Techniques
After the new leaves unfold, implement an alternating wet-dry watering method, combined with phosphorus and potassium fertilizer to promote bud differentiation. Apply boron fertilizer solution (0.02% concentration) during the budding stage to effectively improve the quality of the flowers.
Through scientific dormancy management and progressive revitalization care, narcissus bulbs can maintain their vigorous flowering ability for 5-7 years. The key is to accurately control environmental conditions and combine it with reasonable fertilizer and water management to achieve continuous reblooming of the narcissus.