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 Liberty apple: Self-fertile or not? 
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Joined: Tue Jan 18, 2005 3:53 pm
Posts: 22
Location: Seattle, WA
Post Liberty apple: Self-fertile or not?
I thought I read somewhere that the Liberty apple is "self-fertile." Could this true? Assuming that it is true, could it then serve as a likely pollinator for a Gravenstein apple tree (and pollinate itself in the process)?

Sun Feb 06, 2005 4:07 am

Joined: Thu Jan 27, 2005 11:27 pm
Posts: 1188
Location: Yamhill County, Oregon
David, reading from Apples for the 21st Century, by (our own) Warren Manhart, 1995; LIBERTY: "Bloom time is from late early-bloom to mid-bloom. It has viable pollen..." You ask if it could pollinate a Gravenstein, from all I've read - not by itself. The Grav needs an extra chromosome that must be provided from yet another source of viable pollen. I believe past issues of our Pome News have described this in detail - beyond my comprehension, but that's been my take on it.
You may also look very carefully at that bloom time for Liberty, Gravenstein's are one of the earliest bloomers, and "Late early-bloom" sounds a bit iffy to me?

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Sun Feb 06, 2005 12:22 pm

Joined: Tue Dec 28, 2004 9:09 am
Posts: 139
Location: Canby, OR Z8
Here's the deal. Gravenstein is a Triploid variety. Meaning it has a third chromosome or a third somethingorother. In any case, this makes its pollen sterile and useless, even to other triploid varieties. Liberty is a diploid as are most apples. Liberty's pollen is suitable for the Gravenstein, provided that their blooming periods overlap. The Liberty, however, will NOT be pollinated by the Gravenstein's sterile pollen. Sounds like you know all this already. Unfortunately for you, Liberty is NOT self-fruitful and cannot pollinate itself. There are some self-fruitful varieties however. Yellow Delicious for one, but very scab-prone. Fuji, Gala and Goldent Delicious are also self-fruitful.

Mon Feb 07, 2005 2:14 pm
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Joined: Tue Apr 27, 2004 1:58 pm
Posts: 228
Location: Oregon
Ted Swensen sent me this list of self-fruitful varieties. Hope it helps 8)

Beverly Hills
Copurt Pendu Plat
Dolgo Crab
Dorsett Golden
Golden Delicious
King of Thompkins
Liberty (most disease resistant variety known)
Newtown Pippin
Red Asdtrachan
Siberian Crab
Sierra Beauty
Transcendent Crab
White Pearmain
Whitney Crab
Winter Banana

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Mon Feb 07, 2005 3:12 pm
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