Overwatering will result in yellow, damaged leaves. If your orchid's leaves turn yellow and show signs of rot, hold off on watering for a few weeks.
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DISEASES
The pests that usually bother orchids are scale, mealy bug, snails, slugs, and aphids. Your local garden center or nursery can recommend products to you so that you can control these pests. Apply a good fungicide / bactericide monthly as a preventive measure for disease. Check with your local garden center or nursery for recommendations. Viruses can be transmitted by contaminated cutting tools. Clean pots and stakes each time they are used. Wash used pots thoroughly and always keep hands clean when handling your plants as virus can be spread this way. It is advantageous to destroy all plants with virus since they can be a source of infection to your entire collection.
.............................................ORCHID DISEASES AND PROBLEMS
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SYMPTOMS
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PROBLEM CAUSE
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REMEDY
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| Leaves turn yellow. |
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Too much sunlight or water. Natural
if only old leaves are involved. |
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Give plant more shade. Withhold
water for few weeks.
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| Leaves turn yellow and drop. |
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Natuaral with many deciduoud types.
In evergreen orchids, a sign of collapse. |
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Withold water and move plant to
a cool place to encourage bud formation
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Black Rot - leaves turn
black and watery |
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These fungi - Pythium ultimum can kill orchid
quickly. The leading edge of infection
can appear fluid |
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