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Geranium Leaves Turning Yellow. Exposure to cold temperatures in the air or water can cause the leaves to turn brown. In some cases geranium leaves turning light green yellow or brown can be caused by nutrient deficiencies. Not enough light can also cause a yellowing of leaves if there is too much shade. Place the plant on a south facing window.
Discussion in Plant Pests Diseases and Weeds started by Tammyd Jun 9 2009. Give plants a good short back and sides each year in late-winter. Youll tend to notice this if youre growing your geraniums outdoors in full sun and get several inches of rainfall during the spring or occasionally in the summer months too. Forums Plant Central Plant Pests Diseases and Weeds What causes the leaves on a Geranium to turn yellow. Geraniums are best suited for warm climates. A large amount of nitrogen in the soil.
There it will get a lot of sunlight.
Yellow and Curled Brown Leaves on Perennial Geranium. I have tried just about everything including all sorts of fungus and disease sprays. If the leaves of your geranium are turning yellow. Leaves wilt turn yellow than brown. Abundant or rare watering. While geranium cuttings show up looking healthy and green once they are stuck and placed in the greenhouse to root developing yellow lower leaves on cuttings is a common problem Fig.