Q.Hibiscus buds not opening or blooming.colour has also changed from red to yellowish red
Earlier there were pests and I had sprayed neem oil ,no flowers only buds ,it is summers here
Downtoearthdigs
Answered on May 11, 2019
I think I do see some webbing on your plant; likely Spider Mites.
Treat with Neem Oil, every 3 days for 2 weeks.
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