[NAFEX] Goji and pollination

S & E Hills ehills7408 at wowway.com
Wed Oct 10 22:43:48 EDT 2007

Mine has flowered twice for me in the past 2 years.  Both times was in
October or later.


Not getting fruit on these in Mi.  But honestly mine might be way too
shaded.  They started out in a corner next to a little (pretty pathetic)
illinios everbearing mulberry.  The mulberry is now putting on incredible
growth and hundreds of individual leaves 12-16 inches across.  





From: nafex-bounces at lists.ibiblio.org
[mailto:nafex-bounces at lists.ibiblio.org] On Behalf Of John S
Sent: Wednesday, October 10, 2007 4:32 PM
To: North American Fruit Explorers
Subject: Re: [NAFEX] Goji and pollination


Michele,  I'm in southwest PA, not too far from Pittsburgh.  I have noticed
that the pollen on the flowers does appear to deteriorate within a few
hours.  However, our weather has been very different for several summers
now, so I am not sure if temperature applies.  This summer was more wet than
normal for a while then more dry.  I've never been able to find a good
answer regarding any soil requirements, outside of some rumors that it
prefers alkaline soil.  I've not bothered to try to asjust the soil, but may
try that last year.  I'd don't have much space available, so I may end up
moving on if I can't get it to produce soon.


My plant is easily 8' tall the past two years, so I do not think it is a
maturity issue.  Bloom has been prolific and continuous since mid July.


Thanks for responding.



Michele Stanton <6ducks at gmail.com> wrote:

If any of you are successfully fruiting Goji, please share your techniques!
I have some seedlings that I hope will fruit in a year or two.


 There are reasons other than lack of pollinators that might cause the low
fruit. Goji are solanaceous, and in tomatoes, fruit set is temperature
dependent.  The common wisdom used to be that they wouldn't set fruit if
night-time temperatures went below 55 F and/or if daytime temperatures were
above 95 F.  That's true, but pollination biology is tricky.  More recent
studies have found that the average daily temperature may also be a factor;
too much heat during bloom prevents fruit set.  IN addition, a crucial time
is the week or two before blossoms open--too much heat, and the flowers
don't form well--pollen can be sterile, and other sorts of floral
abnormalities occur that prevent fruit set.  In addition, humidity is also a
factor.  So even though plants otherwise appear healthy, the weather before
and during bloom can cause problems.  


John, where are you growing these?


Michele Stanton

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