Gardenia Yellowing Leaves: Natural Aging vs. Drought Stress, Repotting, and Bloom Triggers

Several bottom leaves yellowing. Soil/pot unchanged for ~year. Asks remedy.

Causes

• Normal oldest-foliage loss (evergreens shed 1–5 year old leaves).
• Gardenias sensitive to drought—dry spells cause internal leaf shed.

Care

• Full to partial sun; moist, well-drained soil.
• Monthly fish emulsion or liquid seaweed in growing season.
• Repot now—2–3" larger pot.

Follow-Up: Flowering Size & Fertilizer

50–60 cm tall (incl. pot) = flowering size. Needs cool dormancy (40–50°F nights) to set buds—put outside if possible, don't freeze. Organic fertilizer mostly; spring high-P (15-30-15, 9-59-10, or light 0-45-0).