Leaves turning yellow - Knowledgebase Question

Bedford, Te
Question by playpar22
June 20, 2009
Why are the leaves on my dwarf gardenia shrubs turning yellow on the bottom of the plants?


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Answer from NGA
June 20, 2009

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Yellowing leaves may be normal - gardenias drop their oldest leaves (those near the center and bottom of the plant) just before replacing them with healthy new leaves. If your plant is showing healthy new growth, the yellowing leaves may be just the natural shedding process. Growing healthy gardenia plants can be a challenge, even for seasoned gardeners. Gardenias require a rich, very acid soil (pH 4.5 to 5.0). An abundance of moisture and high humidity is the most important factor in successful gardenia culture. For flower buds to form and thrive, night temperatures need to be between 60-65F. During the day, temperatures should be 70-75F. A very constant, even temperature is required or buds will drop. Morning sun is important. Avoid direct mid-day sun in the summer and your plant should thrive. Best of luck with your gardenia!

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