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 ...

The blackish trunks on the crapemyrtles around town are caused by an insect known as crapemyrtle bark scale. It doesn’t kill the trees, but it does make them unsightly and less vigorous. This scale is ...

This is a preview. Log in through your library . Abstract A scale-free tree with the parameter β is very close to a star if β is just a bit larger than — 1, whereas it is close to a random recursive ...

In Wilmington one doesn’t have to look hard to find a stressed maple tree - bare twigs, early leaf drop, and lichen in the canopy are just some of the indicators your maple isn’t growing vigorously.