Tatiana Stepanishcheva/ Arborvitae Shop on ...

These are all Picea pungens (blue spruce ... Savvy horticulturalists have ways to collect plant material from desirable genetic oddities and propagate it in the lab or greenhouse.

Time of day of leaf wounding determines plant biomass and affects the interplay ... Low-order fine roots of Picea asperata have different physiological mechanisms in response to seasonal freeze ...