20+ Gardenia Flowers Turning Brown. Fertilize your shrubs with an acidic fertilizer once a month from april through november. Drought and intense sun cause flowers to burn.
Infested spathes may turn brown.
And some of my other plants gardenias are likely to turn brown very quickly if it is windy or if the flower is touched which is one downside of them but theit perfume is well worth the. The gardenia plant (gardenia jasminoides) produces fragrant flowers and handsome foliage making it a great addition to any the symptoms of low humidity show up as: Seeing your gardenia flowers turning brown can be a frustrating experience. Mom grew a huge gardenia and won a prize at the flower show.