Canker caused by Cytospora attacks one of the lower branches first and progressively makes its way higher up the tree.
•
The blue spruce is attacked by two species of Adelges, an aphid-like insect that causes galls to form.
•
Nymphs of the pineapple gall adelgid form galls at the base of twigs which resemble miniature pineapples and those of the Cooley's spruce gall adelgid cause cone-shaped galls at the tips of branches.
NYPD Blue | Toronto Blue Jays | Blue Peter | Blue | Blue Ridge Mountains | Blue Öyster Cult | Blue Note Records | Blue Heelers | spruce | Pokémon Red and Blue | Winnipeg Blue Bombers | Blue Nile | Spruce | Blue's Clues | ''Pokémon Red'' and ''Blue'' | Blue Man Group | Vida Blue | The Blue Danube | Rhapsody in Blue | blue plaque | Blue Mountain State | Blue Cheer | Blue Bloods | Blue Beetle | Ateneo Blue Eagles | Project Blue Book | Blue Hill, Maine | Operation Blue Star | Kind of Blue | Blue Bloods (TV series) |
Ironton is largely transitional in its plant life, sharing traditionally northern trees like the blue spruce along with Magnolia and the occasional Needle Palm from the Upland South.