Showing posts with label Pinus contorta var latifolia. Show all posts
Showing posts with label Pinus contorta var latifolia. Show all posts

Wednesday, May 8, 2013

There's a noble fir growing out of my lodgepole pine!

"Mike says that there is a noble fir branch growing out of his lodgepole pine," my dad said.

That was obviously impossible.  It did sound like some kind of mutation that I should check out, however.  I told Dad that I'd be very interested in checking it out.

The following day, he told me that Mike would be leaving his place at 8, so we needed to be there at 7:30 in the morning to meet him.  My dad is a morning person extraordinaire, so he got me up at some ungodly hour- I don't remember exactly when.  We ended up leaving very early and showing up at Mike's place at about 7:00.  It wasn't even light out.  

We walked out into the lodgepole woods away from Mike's place a hundred yards or so, accompanied by the sound of the barking huskies back at the house.  There was maybe a foot of snow on the ground, and it was in the mid-20s.  Such temperatures are typical in northeastern Washington in December.  

Mike found the tree and showed us his "noble fir" branch.  It was a flat broom, dangling from a spindly and weighted-down branch near the bottom of the tree.  Such a broom is a welcome change from the usual fall-to-your-death locations of most brooms.  I wouldn't need climbing equipment or a shotgun to get pieces of this one.



The needles of the broom were less than half the length of normal lodgepole needles.  Most of the foliage in the center of the broom was dead- presumably from being shaded out.  Most branches this low in the canopy die, so the tree can put more energy into branches above that have access to more light.  In a few more years, this broom may die completely.

I did not have many rootstocks left of this species this year.  The ones I had were slightly too small (the diameter of the scion should never be larger than the diameter of the stem of your rootstock.)  I took a few scions anyway, just to give it a try.  I could always go back next year and get more if it didn't work.

As I write this, most of the grafts don't look so good.  I am holding out hope for two of them.  I am getting some new stocks ready for next year.

I have to appreciate people like Mike.  He may not have experience with grafting, dwarf conifers, or broom hunting, but he is observant of the world around him and noticed something  unusual in one of the trees near his house.

If you continue to read this blog, you will come to see that these mutations are all around us.  All it takes is the willingness to look for them.

Wednesday, February 27, 2013

No Trespassing!



This is one of the first brooms I found- on a Pinus contorta var latifolia tree in WA.  It was right on the side of the road on a busy highway.  Since the branch was hanging over the ditch (public right-of-way), I figured that it was fair game.  My dad and I stopped by with a pole pruner one December morning several years ago and got some cuttings.  It was oddly brittle, and sizable chunk broke off.  In fact, the dead portion on the front is from where it broke- this pic was from a year or two later.

I had half a dozen rootstocks at home, and grafted them up.  Not a single graft took.  The annoying thing about conifer grafts is that you must wait for several months to find out if you were successful or not.  The grafts can look wonderful until the first warm days of late spring.  Then they can suddenly die.

Still others might live- but the new buds have all died, so it will never grow.  Such a graft dies within a year or two.

I had to try grafting this tree about three times before getting one graft to take.  It still grows in my garden today.  Here's a picture of it from a couple of years ago:

As you can see, it has kept its congested growth pattern.  Its ultimate form remains to be seen.  It may or may not look like a tiny replica of the  original broom.






The last time I collected scions from the broom, I got a few tiny pine cones.  I had read that broom hunters will sometimes germinate the seeds- roughly half of which will produce dwarfed offspring.  

The trouble was the cones were glued shut with resin.  Lodgepole pine is a species that is highly dependent on fire.  It is shade intolerant, so it can only regenerate in sunny positions.  Because of this, it has a number of adaptations to both encourage fire and reseed afterwards.  Mature lodgepoles contain a lot of dead wood in their canopies-  they actually are adapted to encourage the fires that almost inevitably killed them in pre-settlement North America.  These fires were often hot enough to kill all of the trees in stands, leaving a charred landscape devoid of trees.  Such landscapes are perfect for pine seedlings...

In addition to dead wood, lodgepole pines build up large reserves of cones that are sealed shut with resin.  During the heat of a fire, the resin melts and the seeds fall to the ground- onto the freshly fire-prepared seedbeds.

Alas, I digress.  What this meant for me was that I had to melt the resin to get the seeds out.  I did this by dry-roasting the cones briefly in the oven- just long enough to get the cones to open.

I managed to get two seedlings out of the deal- one of which is clearly dwarfed.   I'm still not sure about the other one.  Time will tell.