Q.hibiscus
My dad has a white flowering hibiscus but, each year, one purple flower grows on this plant. Is this unusual and why does it happen? Thank you.

Downtoearthdigs
Answered on August 27, 2015
Though the reasons are a lengthy scientific report, it basically is due to the pigments in the flowers and environmental changes.
Yes, the plant can produce blossoms on one plant that may be different from the others.
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