Garden staff are finding more scale insects and aphids than in past years. A major infestation of lecanium scale was recently found on a large planting of bald cypress at the Garden. The population of ...

My oak tree bark is covered with bumps, diagnosed as lecanium scale, sucking the life out of them. Apparently there is a connection with mosquito spraying. We spray because we have an ornamental pond, ...

Alias: Lecanium scale. This scale is often confused for some type of damage that has caused a tree to extrude small bubbles of sap. While that does happen, this is a different matter. These small ...