Living in Melbourne Australia Zone 9-10 I've had success in starting these
air-layers in late summer early autumn. I have only attempted air-layers
using
branches of maximum 2-3 cm. So far I haven't had one fail. I am trying some
now
and started them in the middle of winter to see what results I get. Most
show
root development within 1-2 months however I don't remove for at least 5-6
months.
I have also air-layers mugo pine successfully. However mugo pines don't like
our
hot summers.
David Nassar - david...@mynd.com - Melbourne Australia
-----Original Message-----
From: Andy Rutledge [mailto:k...@FASTLANE.NET]
Hi all,
I would be interested to hear details of any successful air-layers of black
pine any of you may have done. Details, as in which method, what medium
used (soil, moss), how long it took, when started, degrees of success,
etc...
Thanks,
Andy Rutledge
k...@fastlane.net
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days straight is not an uncommon thing) the potensai in nursery pots survive
fine but the ones in bonsai pots will fry very quickly expecially if you
don't have the right soil. Anyway I'll follow this email up once have a
result
with an airlayer I tried in early July (mid winter here) to see how quickly
the roots develop.
David Nassar - david...@mynd.com - Melbourne Australia
--
Peter Whincup
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Mark
Yes, it is possible to grow pines from cuttings, but in general it is more
difficult than other species. Timing is important, as well as maintenance
of a suitable environment. Rooting times are also generally longer than
other species.
Personally, I have rooted Pinus mugo 'Valley Cushion', Pinus thunbergii
cultivars, and Pinus parviflora 'Zuisho'. All three were rooted from wood
grown late the previous season and started in mid spring. The timing
depends more the condition of the wood rather than the calendar and will
even vary from year to year.
Pinus mugo and P. thunbergii seem to do better with a high IBA hormone
(3%), and from what I have seen so far for 'Zuisho' (this year was the
first attempt), hormone strength doesn't seem to make a lot of difference.
Cuttings taken in April are usually rooted by the end of August. That's an
awfully long time to keep a pine cutting alive without either drying it out
or having it rot from too much mist. If they aren't rooted by the end of
August, they seem to be doomed. Very few have overwintered and rooted out
the following spring. I now just throw them out if they haven't rooted and
start a new crop the following spring.
I don't see much advantage to rooting P. parviflora since the species
itself is notoriously prone to fungal root problems, at least in this
country. I think the better route is to graft them to P. thunbergii, which
is an excellent understock. If grafted very low, there are no unsightly
union problems. If grafted high (to the first branch) you get a fat trunk
and nice scaly bark. This is often done in Japan. The trunk usually is
trained to take a turn at the first branch (at the graft union) to help
make the bark transition less jarring.
Rooting P. thunbergii cultivars, especially the cork bark types is very
exciting. Grafting them is problematic. Unless they are grafted absolutely
just above the existing understock roots, the corky bark will appear to
'float' above the smoother bark of the understock. Cutting grown plants
avoid this problem, with the added benefit of having corky surface roots as
well. Rooted cuttings of P. thunbergii are also very vigorous.
Brent in Northern California
Evergreen Gardenworks USDA Zone 8 Sunset Zone 14
mailto:bon...@pacific.net http://www.EvergreenGardenworks.com