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Gardenia Leaves Turning Yellow

Growing Gardenias, Caring for Gardenias, Gardenia Diseases

gardenia, flowers, gardenias, common gardenia, gardenia blossom, gardenia flowers, Gardenia diseases, Gardenia Problems, Gardenia yellow Leaves, Yellow Leaves, Leaves Turning Yellow

Beloved for their intoxicating fragrance and attractive, waxy, creamy-white flowers contrasting beautifully with their shiny, leathery, dark green leaves, Gardenias are irresistible evergreen shrubs or trees. Native to the tropical and subtropical regions of Africa, southern Asia, Australasia and Oceania, Gardenias may be fussy and quite temperamental in their cultural needs.

If your Gardenia’s leaves turn yellow and drop, aside from the normal aging process of its leaves, this may be caused by any of these reasons:

  • Over-watering or under-watering: Gardenias need at least 1 inch of rain (or equivalent watering) each week. Keep the soil consistently damp but not soggy. Don’t let the soil dry out and don’t over-water your Gardenias
  • Poor soil drainage: Make sure your Gardenia soil is moist and well-drained.
  • Insufficient light: Although a Gardenia plant prefers full sun, some shade is appreciated during the warmer months of the year or its leaves may scorch and its buds may fall off if they get too much sunlight. In hot climates, Gardenias grow best with morning sun and afternoon shade. In cooler areas, they can tolerate full sun, especially if their roots are covered with organic mulch. Gardenias growing in containers need bright light or filtered shade with no direct sun. Gardenias grown indoors should receive at least 6-8 hours of direct sunlight through a sunny window.

Guide Information

Hardiness 6 - 11
Heat Zones 8 - 12
Climate Zones 7, 8, 9, 12, 13, 14, 15, 16, 18, 19, 20, 21, 22, 23, 24, H1, H2
Plant Type Shrubs
Genus Gardenia
Exposure Partial Sun
Season of Interest Spring (Mid, Late)
Summer (Early, Mid, Late)
Fall
Water Needs Average
Soil Type Clay, Loam, Sand
Soil pH Acid, Neutral
Soil Drainage Moist but Well-Drained
Tolerance Deer
Attracts Birds
Landscaping Ideas Hedges And Screens, Beds And Borders, Patio And Containers
Garden Styles City and Courtyard, Informal and Cottage, Traditional Garden
Gardenia jasminoides ‘Aimee’ (Cape Jasmine)
Gardenia jasminoides ‘Buttons’ (Cape Jasmine)
Gardenia jasminoides ‘Chuck Hayes’ (Cape Jasmine)
  • Unusually cool weather: Gardenias perform best in day temperatures of 65-70°F (18-21°C) and night temperatures of 60-65°F (15-18°C). Lower temperatures may cause leaf yellowing and drop.
  • Nutrient deficiencies: Gardenias like soil that is rich in nutrients. Add plenty of organic matter to the soil such as peat moss or manure to enhance the growth of your plant.
  • Iron Chlorosis: Iron is a key nutrient that is used by plants to produce chlorophyll. Gardenias prefer acidic soils with a pH between 5.0 and 6.0. If your soil pH is too high (above 7.0), the iron may not be available to your plant.
Gardenia jasminoides ‘August Beauty’ (Cape Jasmine)
Gardenia jasminoides ‘Coconut Magic’ (Cape Jasmine)
Gardenia jasminoides ‘Golden Magic’ (Cape Jasmine)
  • Root Rots: Various fungi cause a decay of Gardenia roots. This disease stems from wet soil conditions such as poor drainage and over-watering.
  • Nematode feeding: Various nematodes (microscopic worms) feed within plant roots. There are no nematicides available. If your Gardenia is severely affected, it should be removed and destroyed.
Gardenia jasminoides ‘Belmont’ (Cape Jasmine)
Gardenia jasminoides ‘Daisy’ (Cape Jasmine)
Gardenia jasminoides ‘Heaven Scent’ (Cape Jasmine)

Discover These Helpful Guides for Further Reading

Favorite Dwarf Gardenia Varieties
Favorite Large Gardenia Varieties
Favorite Medium-Sized Gardenia Varieties
Gardenia Bud Drop Problem
Gardenia Leaves Turning Brown
Gardenia Not Blooming
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While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.

Guide Information

Hardiness 6 - 11
Heat Zones 8 - 12
Climate Zones 7, 8, 9, 12, 13, 14, 15, 16, 18, 19, 20, 21, 22, 23, 24, H1, H2
Plant Type Shrubs
Genus Gardenia
Exposure Partial Sun
Season of Interest Spring (Mid, Late)
Summer (Early, Mid, Late)
Fall
Water Needs Average
Soil Type Clay, Loam, Sand
Soil pH Acid, Neutral
Soil Drainage Moist but Well-Drained
Tolerance Deer
Attracts Birds
Landscaping Ideas Hedges And Screens, Beds And Borders, Patio And Containers
Garden Styles City and Courtyard, Informal and Cottage, Traditional Garden
Compare All Gardenia
Compare Now
Guides with
Gardenia

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