These native conifers can grow even in poor, rocky soil. The Spruce / Evgeniya Vlasova Jack pine is a tree that cannot be tamed—this small to medium-sized evergreen grows its own way and takes over ...

One of the simplest examples of how plants adapt to ensure that their species survives is found in pine cones. Evergreen trees that produce cones are called conifers. There are more than 600 species ...