Bug? - Knowledgebase Question

Belmont, Ca
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Question by jcfctc2
June 30, 2009
I have a clear sticky liquid with what looks like a sugar crystal in it, on the leaves and stem of my money tree inside and on a couple of plants on my patio. Do you have any idea what this is? I have asked at a couple of plant places including HD. I live in the San Francisco area.
Thanks, Judith

Answer from NGA
June 30, 2009
What you describe sounds like a condition known as oedema (or edema). Oedema is a symptom of a physiological imbalance in plants. It comes from a buildup of water pressure in leaf tissue which can leak out (which is what you see on your plants) or can distort the leaves and burst the cells within the leaves.

Overwatering, high humidity, and low light intensities favor the development of oedema. Faulty watering practices, such as allowing plants to dry out completely and then drowning them, encourages it. Be sure to water regularly so the soil remains moist but not soggy wet, and try to reduce humidity or at least improve air circulation by providing lots of elbow room between your plants.

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