A pine tree has needles that grow in bundles — you can see three to five needles bunched together on a pine tree branch. Pine trees have fewer branches, so they tend to look sparse with their upturned branches. However, this leaves lots of room to hang ornaments at the back and middle of the branches, allowing you to hang all of your favorite ornaments.
The Scotch Pine is well-known for holding its needles, even after becoming dry. The dark green needles of the Scotch Pine are from 1″ to 3″ in length, and its branches are sturdy and suitable for ornaments of all weights and sizes. They are one of the more common Christmas trees in the US. The largest pine in the U.S., the white pine has soft, flexible needles and is bluish-green in color. Needles are 2½ - 5 inches long. They aren't recommended for heavy ornaments.