Lilies need a lot of nutrients for vigorous and long blooming. Therefore, they need to be fed regularly.
You can replace store-bought preparations with ordinary yeast. This will make the trunks thicker, and the flowers will bloom longer and more abundantly.
To prepare fertilizer, dilute one small package of yeast in 1 liter of water, add 1 teaspoon of sugar and leave to infuse in a warm place for 12-16 hours. Then dilute the mixture with 10 liters of water, add 1 tablespoon of urea and mix well.
Fertilizing starts from April, twice a month. Yeast fertilizer makes the soil more acidic, so it would be advisable to use deoxidizers. It can be dolomite flour, a small amount of which should simply be added to the ground.
Also, top dressing with double superphosphate and wood ash is suitable for lilies.