Hmm… Interstem questions - #3 by Windfall_rob
Cummins advising a customer:
"We strongly recommend that trees on G.11/MM.111 interstems be planted with half the interstem G.11 exposed above permanent soil level, half below soil. This permits the G.11 to take root and the tree to develop a dual root system. The precocity and productivity induced by G.11 as a rootstock should be slightly diminished. The MM.111 will provide solid anchorage; staking will not be necessary for tree support (although we do recommend temporary support to facilitate building canopy).