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nafex - Re: [nafex] Crataegus as rootstock

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  • From: Steve <sdw12986@aol.com>
  • To: Devin Smith <dvidedevo@yahoo.com>, nafex mailing list at ibiblio <nafex@lists.ibiblio.org>
  • Subject: Re: [nafex] Crataegus as rootstock
  • Date: Fri, 14 Mar 2014 14:44:31 -0400

Hi Devin,
I don't have answers to your questions, because I've never grafted anything onto a hawthorn. If they grew around here, I'm sure I would have long ago.
I just wanted to mention that pears can be grafted onto a mountain ash. That combination doesn't seem to be very dwarfing, but if you happen to have any wild mountain ash around your property, you might want to try it.
About 20 years ago, I bought a Nova pear tree and planted it. After a few years, I grafted a scion of Nova onto a mountain ash that had sprouted up next to an old stump. After a hard winter, the original Nova tree died, before ever producing a fruit, but the one grafted onto the mountain ash still lives and produces lots of pears every year.

Steve (in the Adirondacks)


On 3/13/2014 10:29 PM, Devin Smith wrote:
I'm new to NAFEX and still figuring things out. I posted this to the google
group and forum, but it didn't seem like much was happening there. It looks
like the listserv is a lot more popular, so I thought I'd post it here. Sorry
if its a repeat for some of you...

I've
been playing around for a few years with grafting pears onto the many
hawthorn seedlings coming up in my old hayfield turned orchard. I've
found that many European pears are compatible (all that I've tried actually)
, though not all, and all
asians attempted have been failures. I'm not sure what the mature trees
will look like exactly, but after 3 years of growth on some, I've observed a
tendency toward unbranched cordon growth pattern with some varieties
showing very short inter-nodes. It looks like there will be a pronounced
dwarfing effect. This year, I'm going to graft a bunch
with Old Home interstems so I can hopefully then graft asians too.

Beyond dwarfing, one potential advantage I can see to
hawthorn as a rootstock is the fact that it is tap-rooted and so less
prone to drought. I'm particularly smitten with the idea of grafting to
existing seedlings because it saves so much work up front, survival is
much higher, and initial investment is nill. I understand that
compatibility issues sometimes don't occur until later in the game. I may try
grafting low and burying the graft on some to produce self-rooted trees.
Still, the allure of a true dwarf pear on free (and already planted!)
rootstock is hard for me to pass up. I've
scoured the web and elsewhere looking for info about hawthorn as a pear
rootstock and have found little beyond casual mention that it can work. The
Grafter's Handbook mentions in passing that Pyrus and Crataegus form a lasting
union, but says little more. If this works, why don't more people do it? I assume
there would be a similar range of compatibilities across various hawthorns as
found in other types of rootstock. I've read somewhere that apomixis is common in
hawthorns, though, so maybe I have effectively clonal rootstock. FYI, the local
landrace of hawthorn seems to be quite shrubby. Ancient ones seem to top out at 15
ft. and 6" diameter or so.

I'm curious if anyone has longer term experience to share and would
appreciate any information anyone could provide.

thanks,

Devin Smith




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