I was inspired by Simon to generate a CSMR.
I have posted these results in the California Mango Growers Facebook group as well.
I planted a sweet tart and an orange sherbet seed in the same 5gal pot, summer of 2023. In winter of 2023, I inarched/approach grafted them together. My first attempt was too short of a graft and I broke the graft when peeling off the buddy tape. I recut the cambium and regrafted, which appears to have taken.
When the weather warms up, I plan on decapitating the sweet tart top at the graft union so that both root systems will feed the orange sherbet. It's already quite vigorous without the 2 root systems, having grown 2 ft since being planted July 2023. The sweet tart top I will graft onto my home depot Manila.
I am also adding kent seeds to some 6 month old seedlings to do the same thing (pics not shown).
Phillip in Altadena