Wayne Dunlop

Thanks for the replies, i appreciate them.    Yes i found that multi variety trees can be a challenge to say the least, but due to space limitations/landscaping in my backyard i didnt want to overcrowd numerous trees.    Also taking into consideration the pollination element I decided to go with multi grafted varieties.    With proper pruning, spreading and various other techniques i hope to at least grow 3 of the five pear varieties.    Will do my best to give all varieties a fair go at it and see what happens.    

Cheers,

Wayne

Thanks for your reply Bryant.   Will see where i can get some B12 from.     Curious did you mean B1?   Seems there are mention of B1 being used to stimulate root growth.  

Wayne

Hello I'm new to the forum and new to fruit tree growing.     Glad to have found this forum and hope to contribute once i get a handle on things.  
Prelude:     i live in oshawa ontario (about 30 minutes east of Toronto) zone 5b.    i purchased two multi grafted fruit trees in mid june of this year.    One apple and one pear.    I have since then immersed myself into learning all i can to enjoy these trees and keep them as healthy as possible.  The apple is doing quite well...no issues.      The pear is doing ok with 3 varieties maintaining good leaf color but no new growth since planting.     The Bartlett pear branch has shot up a vigorous new shoot that has probably grown over 2 feet in very short order (water sprout??)   The red bartlet has also  gained some new leaves but nothing vigorous.    Question:   my thinking is to allow the shoot to grow which will allow the roots to absorb extra extra energy when tree becomes dormant.    Then in spring completely prune shoot and lightly trim other varieties.    The thought is extra energy stored will assist other varieties in getting a good growth start in the spring while assisting in balancing out the tree in the process.    I know this type of growth isnt desirable in older trees and i would have likely pruned off shoot earlier in the season had it occured then.  So any advice would be greatly appreciated.  
Thanks in advance
Wayne