>> Other companies also are doing grafting, but I haven't gone to their sites to see if rootstock varieties are listed. Territorial Seed is one, Johnny's Selected Seeds is another.
It looks like Johnny's Selected Seeds grafts onto 'Estamino' rootstock. Enza Zaden bred Estamino in the Netherlands, and it is grown or at least distributed by King Seeds in the USA.
I don't know what rootstock Territorial uses on grafted plants they sell, but they do sell SEEDS for "SuperNatural (R)" rootstock-only plants.
This USDA PowerPoint presentation site seems to say that Territorial DEVELOPED "SuperNatural (R)". ??
http://expeng.anr.msu.edu/uplo...
Johnny's says:
"Tomato plants grafted to Estamino will be more productive and resistant to soil-borne diseases including three races of fusarium, fusarium crown and root rot, verticillium wilt, and nematodes."
"The minimum order is one flat of 102 plants shipped by the first week of June 2014; after that date the minimum order is four flats"
They do not seem to be targeting hobbyists and small-time growers with these!
Every order is a custom order and I couldn't find prices for a tray of plugs.
How big are the cells in a tray with 102 plugs? Maybe like this:
Cell Depth 1.69 "
Cell Top Diameter 1.06 "
Cell Configuration 6 x 17 (hexagonal cells)
http://www.myerslawnandgarden....
Territorial Seed
I couldn't fiind what rootstock they use for the grafted plants they sell. But they sell F1 hybrid seeds for one kind of rootstock-only tomato: "SuperNatural (R)". Evidently there is a company that advertises a product line of "Mighty 'Maters" on this same rootstock. Their website was gaggingly cartoonish so I didn't drill very deep.
http://www.territorialseed.com...
mightymato.com/
Territorial says:
"Our plants are available individually in 2 1/4 inch pots! At Territorial you don't have to buy 6 plants of each variety.
You can mix and match your plants just the way you want."
But each plant costs $8.
Here is a discussion of using grafted tomatoes where yield per square foot is important, e.g. greenhouses. Page 3, continued on page 9.
http://www.extension.umn.edu/g...
