It usually blooms in spring and summer, specifically between March and July, when the flowers are most concentrated. But it's only about time. It depends on the actual weather and climate. Because its flowers will have small differences due to climate change.
1. Light: it should be placed in a place with scattered light in the flowering period. Too strong light or in a cool place will lead to non flowering.
2. Soil: it likes acid soil for its growth, especially for its flowering period. Once it is alkaline, it will not bloom. Therefore, we should often check the pH of the soil, if it is alkaline, you can use diluted vinegar to adjust
3. Water and fertilizer: excessive watering is not allowed in the flowering period, and ponding is strictly prohibited, but water shortage is also not allowed. When watering, we should apply appropriate amount of P and K fertilizer, but the concentration should not be too high
4. Pruning: before flowering, cut off the disorderly or too dense branches, or you will consume too much nutrients, so that you can not get enough nutrients to bloom.