Jennie Mazzone, Penn State Extension Educator, Horticulture Spruces (Picea spp.) are eye-catching at this time of the year, ...

One family's beloved backyard tree is hitting it big in NYC. Learn all about the tree taking center stage as this year's ...

The water relations of Picea abies in a healthy stand with green trees only and a declining stand with trees showing different stages of needle yellowing were investigated in northern Bavaria. The ...

Leaves – Evergreen needles; ½ -1” in length, flat, and attached directly to the twig via a small peg. Needles are dark green above, with prominent glaucous white stomatal bands beneath. Twigs and Buds ...

Young Norway spruce trees were grown in 94 pots (2 per pot) on soil substrate derived from granite with low Mg saturation and were fertilized with different amounts of NH₄NO₃ (in total 25, 61, and 97 ...