Lilac Fertilizing Methods
As a beloved ornamental plant, lilacs are a common sight in gardens thanks to their fragrant blooms and graceful posture. To cultivate lush and flowering lilac plants, scientific fertilization is a key step. This article will provide a detailed analysis of lilac care fertilization secrets, from fertilization timing, fertilizer selection to operational essentials.
Lilac Fertilization Schedule Planning
Basic Nutrition Foundation Period
In the early stages of planting, it is recommended to mix 5% of decomposed organic fertilizer into the soil as a base fertilizer to provide continuous nutrients for the seedlings. For potted lilacs, slow-release granular fertilizer can be used, mixed with the substrate at a ratio of 1:30.
Growth Key Supply Period
Apply fertilizer every 15 days during the germination period of March to May, switch to phosphorus-potassium fertilizer before the flowering period from June to August, and stop applying nitrogen fertilizer after September. No fertilization is allowed during the winter dormancy period to avoid root damage.
Lilac Fertilizer Scientific Ratio
Base Fertilizer Preferred Solution
It is recommended to use sheep manure organic fertilizer (NPK 2-1-2) or soybean cake fertilizer, with 3-5 kilograms mixed per square meter. For slow-release compound fertilizer, a formula of 15-9-12 is suggested, with a sustained release period of up to 120 days.
Top-dressing Accurate Combination
Use a balanced fertilizer of 20-20-20 during the growing period and switch to a high-phosphorus fertilizer of 10-30-20 before flowering. Homemade nutrient solutions can alternate between banana peel soak (potassium source) and rice washing water (nitrogen source).
Lilac Fertilization Practical Guide
Circular Trench Fertilization Method
Dig a circular trench 15 cm deep around the drip line of the tree canopy, sprinkle the fertilizer evenly, and cover with soil. For potted plants, the "peripheral point application method" can be used, with 6-8 fertilization points buried evenly around the pot edge.
Fluid Fertilizer Application Skills
Water-soluble fertilizer dilution concentration should be strictly controlled between 800-1000 times, and applied in the evening on sunny days. If it rains within 24 hours after fertilization, a half dose of fertilizer needs to be applied.
Lilac Fertilization Risk Prevention and Control
Fertilizer Burn Emergency Treatment
If the leaf tips turn brown, immediately flood the plants with water, watering thoroughly twice a day for 3 consecutive days. In severe cases, replace the top 15 cm of soil and apply root stimulant to the roots.
Special Conditions Response
Spread wood ash before the rainy season to adjust soil pH, and switch to foliar application of 0.2% potassium dihydrogen phosphate during the plum rain season. For old lilac plants, perform root pruning and fertilization every early spring to stimulate new root growth.
By mastering the temporal and spatial规律 of lilac fertilization and operational methods, combined with scientific fertilizer ratios, the plants can maintain the best growth state. It is recommended to dynamically adjust the plan based on soil test data, increase trace element supplementation before flowering, prune and replenish nutrients after flowering, and you can enjoy the intoxicating beauty of lilac flowers year after year.