Firs are evergreen coniferous trees belonging to the genus Abies in the family Pinaceae. There are approximately 48–65 extant species, found on mountains throughout much of North and Central America, Eurasia, and North Africa. The genus is most closely related to Keteleeria, a small genus confined to eastern Asia.
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Every article on Plant News that mentions a member of this genus, newest first.
Scientists reviewed how conifer trees like pine and spruce build internal tunnels that produce and ooze resin, their natural defense against insects and disease, and found we still don't fully understand how trees build this plumbing or switch it on.
If you've ever wondered why the alpine tree line on a mountain hike forms such a sharp edge, this explains it: it's not one...
The forest floor beneath sugar maples, firs, and spruces acts as the primary filter catching airborne toxic compounds before...
If you've ever hiked the mountains of southern Spain, the ghost-blue spires of Spanish fir are part of that landscape — and...
If you've ever wondered why the alpine tree line on a mountain hike forms such a sharp edge, this...
The sticky sap that seals a pruning cut or wound on your pine or spruce tree flows through a dedi...
