North American Fruit Explorers mailing list at ibiblio

[Jwlehman@aol.com]

In a message dated 10/21/2009 10:21:47 PM Central Daylight Time, abb7@Lehigh.EDU writes:

> One snag is that most cultivars apparently do not produce male  
> flowers.  Hokkaido does, and apparently Great Wall and or Hana Fuyu,  
> according to Bass? results this season.  I?ve heard of a hormone  
> treatment that will induce the development of female flowers on male  
> D. virginiana?.is ther any such trick to get male flowers on a female  
> D. kaki?


I believe you are looking for Gibberellic acid. I've read that ribbing it on the bark of female trees very early spring will bring on male flowers. Have no experience using it.

Jerry