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James City County/Williamsburg
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Orchids

Aphids on plant; alcohol did not kill

Use a mist to wash them off; if herbicide are used, read the below article carefully.

Roots grow into the air, and there is new growth of leaves at top of stalk where flower was cut off

Aerial roots are a natural growth form of orchids. Cut the stalk lower to eliminate the new leaves at the top.

Reference(s):

Aphids

Complete Guide to House Plants: New York Times Gardening Questions and Answers