Conifers Pinus pinea Stone Pine Tree with snow - Mini Christmas treeA mini Christmas tree with snow! The stone pine (Pinus) 'Silver Crest' has a flattened spherical crown on a sturdy orange brown trunk. In the young stage, the needles are evenly grey. Later, they turn grey green. The tree does not drop any needles. In its adult stage, the tree grows into a beautiful stone pine! In the young, growth stage, the tree grows green round cones. From the third year onwards as they mature, these grow egg shaped and develop a