best time of year to graft

[horseshoe_bayou]

I'm at the point where I am running out of space and would like to start doing more grafting to add variety but, my experience is limited and so I wanted to ask:
Is grafting more succesful at certain months or seasons of the year in South Florida? I would be focusing on Mango, Avocado, Jackfruit, sapodilla, mamey and maybe citrus.

a few trees are potted and can be moved around but most are already in ground.

any comments, links, or videos would be helpful.

thanks in advance.

[jcaldeira]

The best time to graft is when both the scion and rootstock are in the early stages of a growth flush.  Most of the fruit trees you listed go through intermittent periods of growth and dormancy.  Swollen buds that have not yet broken are are best to graft. 

Following a drought or dry period, grafting a few days after a good rain is usually highly successful.

By the way, I have multiple varieties on a few citrus and mango trees and find that it's hard to achieve a balance with multiple varieties.  Some of the varieties seem to dominate without regular pruning.  I don't know whether it is due to the vigor of the variety of access to sunlight.