1、 Replenish sunshine

Reason: when iris flowers bloom, we must ensure good sunshine. If there is a lack of light, photosynthesis is difficult to synthesize nutrients and naturally cannot be supplied to flowering. This is the common reason why iris does not bloom, which is a key factor

Solution: if you want to promote the iris to bloom beautiful flowers, you should give sufficient light and keep 6-8 hours of sunshine every day before flowering, but you can't see strong light

2、 Soil replacement

Reason: Iris likes to grow in alkaline soil. If the soil provided is not suitable or acidic soil is used, these soils are not suitable for growth, which will directly affect flowering

Solution: it likes fertile soil with good permeability and excellent drainage. If its soil does not meet the growth needs, it can replace the appropriate soil

3、 Rational fertilization

Reason: improper fertilization, lack of fertilizer will lead to lack of nutrients in the plant, and too much nitrogen fertilizer will also make it difficult for iris to bloom

Solution: for its growth and flowering, we should pay attention to rational fertilization, apply phosphorus and potassium fertilizer before flowering, and reduce the application of nitrogen fertilizer

4、 Disease control

Reason: the infection disease will also affect the normal flowering and hinder the plant growth

Solution: pay attention to prevention at ordinary times, cut off the diseased branches and leaves in time after onset, and spray medicine for treatment