How to grow an osmanthus tree so it blooms? A complete guide to flower-promoting methods
How do you get an osmanthus tree to bloom? What methods are effective when osmanthus does not bloom. The reasons are excess nitrogen fertilizer, insufficient phosphorus and potassium fertilizer and a lack of trace elements; second, insufficient light; third, improper pruning and shaping. The above are also common problems of potted osmanthus in the north. At present it is exactly the stage of flower bud formation, so phosphorus and potassium should be applied immediately...

How do you get an osmanthus tree to bloom? What methods are effective
Osmanthus does not bloom. The reasons are excess nitrogen fertilizer, insufficient phosphorus and potassium fertilizer and a lack of trace elements; second, insufficient light; third, improper pruning and shaping. The above are also common problems of potted osmanthus in the north. At present it is exactly the stage of flower bud formation, so phosphorus and potassium fertilizer and trace elements should be applied immediately. Method: spray the leaves and water the potting soil with a 0.5-1.0 superphosphate aqueous solution, or use monopotassium phosphate at the same concentration and spray once every 7-10 days. After that, set the timing by leaf color: when the color is deep, apply later and less; when the color is pale, apply frequently and more. Second is potting soil treatment: you can scrape off a layer of the potting soil, to the extent that the roots are not damaged (or only slightly damaged), then top it up with worm castings plus a small amount of leaf mold (or coal ash residue), and mix in a few dozen granules of nitrogen, phosphorus and potassium compound fertilizer. The purpose is to supplement quick-acting nutrients and trace elements, and to keep the potting soil loose and breathable. Third, you can buy from a flower shop a flower fertilizer with low nitrogen content and more phosphorus, potassium and trace elements, and use it according to the requirements for forcing flowers. Your flower pot should be moved to a place with sufficient light, and ventilation should be good. In this way, it can be expected to bloom this year.
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