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
Wisconsin honeyberry/haskap growers?
I'm combining the two as it seems with continued breeding...
wisconsitom
Haskap or Honeyberry?
I am in zone 6 in southern Illinois, so I get extreme...
flowerchild59
Blue Berries-acid soil and other vegetable plants
I have been growing blue berry plants intermixed with...
RonCz
Urgent grafting advice: Experiment Antonovka +/- B9 interstem
You can read my previous posts to see photos of my...
hungryfrozencanuck
Looking for Carmine Jewel Cherries?
I know a lot of people are looking for carmine jewel...
clarkinks
Sponsored Products
Coral Reef Gray Dupioni Silk Shade Ovo Table Lamp
Lamps Plus
Piccolo LED Satin Nickel 6.5-Inch One Light Flush Mount
$98.00 | Bellacor
Greens Bold Stripe Ovo Table Lamp
Lamps Plus
Lucien Wall Sconce by Kichler
$64.90 | Lumens
Progress Lighting Recessed Lighting 8 in. Pro-Optic Gold Alzak Recessed Open
$34.18 | Home Depot
Fawn Brown Lido Floor Lamp
Lamps Plus
Bobbi Ivory 52-Inch x 63-Inch Blackout Window Curtain Panel
$23.95 | Bellacor
Progress Lighting 6 In. Pro-Optic Firebox White Baffle Trim P8031-28FB
Home Depot
© 2015 Houzz Inc. Houzz® The new way to design your home™