The reason why roses wither as soon as they sprout
When the roses sown with hope finally germinate new buds, the tender green buds quickly wilted and turned yellow, this feeling of loss is deeply understood by every gardener. This article will systematically analyze the cause and mechanism of rose blight during the bud stage from the perspective of professional gardening, and provide actionable rescue plans to help you cultivate strong rose seedlings. The five main reasons for the wilting of rose buds are unbalanced water management. The root system of new rose flowers only absorbs capillary roots. When excessive watering causes the soil water holding capacity to exceed 70%, the root system continues to soak and form an anaerobic environment. The data shows that the root damage rate of seedlings can reach 52% after 24 hours of water accumulation. It is recommended to use a soil hygrometer to monitor and maintain the humidity of 40-60%. The experiment with excessive light stimulation proved that the leaf transpiration rate of rose seedlings was tripled under light intensity>30000lux. It is recommended to use a sunshade net to filter 50% direct light, or place it on an east-facing balcony to receive morning light to avoid strong ultraviolet radiation from 11-15 noon. The gradient dehydration method of the four-step therapy for rejuvenating the rose buds uses the "bamboo stick detection method": insert the grilled bamboo stick into the pot soil 2/3 of the depth, and observe the traces of humidity after 20 minutes. If obvious water stains appear, the flowerpot should be raised immediately, the fan should be turned on to accelerate air circulation, and if necessary, replace the breathable substrate with 30% of perlite. Progressive light acclimatization develops a 21-day light adaptation plan: maintain 5,000 - 8,000 lux of scattered light for the first 7 days, increase it to 15000lux on days 8-14, and accept 25000lux of direct light from day 15. Cooperate with foliar spraying 0.1% ferrous sulfate solution to enhance the light adaptability of leaves.
Through scientific humidity control and progressive environmental adaptation, the survival rate of rose seedlings can be increased to more than 85%. It is recommended to regularly use pH test paper to test the soil pH (ideal value of 5.5-6.5), and cooperate with the application of decomposed sheep manure organic fertilizer to create a healthy growth microenvironment for roses.