How to solve the yellow star leaves
As a favorite ornamental flower, Gypsophila paniculata yellow leaves often trouble growers. In this paper, according to the phenomenon of leaf yellowing, combined with root maintenance, nutrition regulation and other dimensions, four scientific treatment schemes are systematically analyzed to help you reproduce the green vitality of Gypsophila paniculata. 1. Plant pruning management 1.1 pruning necessity analysis dense branches lead to insufficient light inside the leaves, ventilation blocked, is the main cause of yellow leaves. It is recommended to check the crown density every month and keep the main stem spacing 8-10cm. 1.2 Practice Guide for pruning Use disinfected pruning shears to cut off crossing branches and sick branches at a 45° angle. Add potassium dihydrogen phosphate foliar fertilizer after pruning to promote wound healing. After operation, transfer to the east-facing balcony to ensure light scattering for 4 hours a day. 2. Water control plan 2.1 Optimizing the watering cycle adopts the principle of "seeing dry and seeing wet", 5-7 days per time in spring and autumn, 3 days per time in summer (avoiding noon), and 10-15 days per time in winter. Insertion of bamboo stick test method: 2/3 of the bamboo stick is buried in the soil, and water needs to be replenished when it is extracted without adhesion. 2.2 Drainage system upgrade basins need to be equipped with drainage holes, and the matrix is prepared according to perlite: peat soil: vermiculite =3:5:2. Emergency treatment of stagnant water: Tilt the flowerpot to drain out excess water, loosen the soil to a depth of 8cm, and cooperate with a small fan to accelerate evaporation. 3. Root system restoration technology 3.1 Fertilizer damage treatment process immediately stops fertilizer when found that the roots are burned. After removing the pot, running water is used to wash the roots for 1 hour. Trim black necrotic roots until white tissue is exposed, soak them in potassium permanganate (0.1% concentration) for 20 minutes, and add 10% activated carbon particles when replacing with new soil. 3.2 Scientific fertilization regulates the application of decomposed soybean cake water diluted by 1000 times every month during the growth period, and increase the application of phosphorus and potassium fertilizers during the budding period. The principle of "thin fertilizer and frequent application" is recommended, and the amount of single fertilizer application should not exceed 200ml/plant. 4. Nutrient element replenishment 4.1 Iron supplementation plan Prepare chelated iron solution (concentration 0.05%), and spray it on the leaf surface and root irrigation to supplement iron. Pay attention to the interval between fertilization and fertilization for more than 3 days and avoid mixing alkaline substances. 4.2 Comprehensive nutritional management regularly detects the soil pH value (maintaining 5.5-6.5), and supplements slow-release fertilizers every spring. Combine magnesium, manganese and other trace elements, and use a compound nutrient solution (N-P-K=10-15-20).
Through systematic diagnosis and precise intervention, more than 90% of yellow leaf problems can be improved. It is recommended to establish a maintenance log to record key data such as pruning cycle and fertilization ratio, and cooperate with regular leaf cleaning (wiping with a damp cloth every month) to comprehensively improve the stress resistance of Gypsophila. When the new leaves appear healthy emerald green, it means that the treatment measures have taken effect.