Colt rootstock still on patent?

itheweathermanDecember 21, 2013

Is colt rootstock still on patent?

I'm asking this question because I'm planning graft it onto my proprietary Krauter vesuvius myrobalan plum x mariposa plum hybrid---I want to use it as an inter-stem for my bing cherry.

If it still on patent, I will not graft it.

Thank you for reporting this comment. Undo
olpea(zone 6 KS)

Colt patent was issued in the 70s, developed by the Malling station in England. It's patent has long expired. PP#4059

    Bookmark   December 22, 2013 at 1:15AM
Sign Up to comment
More Discussions
Pictures missing!
Have you noticed, since Houzz took over allot of pictures...
Konrad..just outside of Edmoton Alberta
Hardy Peach Tree; Recommendations?
I am new to peach trees. I bought a Reliance three...
mark_roeder
Something ate part of this apple tree
This a seedling I started last year. Last night something...
Orchardman
Growing Fruit Trees in Raised Beds
Hi, Glad to reconnect with the gardenweb again (I used...
tuvalu39
Asian pear spray in first year
Just planted a dwarf asian pear from Starks. Do I need...
ferroplasm Zone 7b
© 2015 Houzz Inc. Houzz® The new way to design your home™