Three of these might be found on your dinner table. The other is a native tree of the Pacific Northwest. Which are which?
Something is causing green Douglas-fir cones to fall from the trees before they are ripe. And, the cones are getting piled up into mounds. Who’s doing this?
Douglas-fir cones are re-appearing again after a year of no cones.
Let's take apart a Douglas-fir cone with a pair of kitchen shears. What's inside?
For old cones, you'd expect that most or all of the seeds are gone, which is what we find.
What do Douglas-fir seeds look like? How many are there?
And finally, read this for a trick question ...
This is the season that winged seeds of maple trees helicopter down to the ground. What advantage do the whirling seeds provide to maple trees?
As a rule-of-thumb, most seed cones (female cones) tend to grow in the upper portions of trees. Why is this?