Squidy...sorry that no one has responded yet...you know how the holidays can be!! To me, it looks like a fungal problem...but, there are so many, many variables. If it was my plant...and it is NOT H. tsangii...I would buy a fungicide from one of the big "box stores" and spray the plant thoroughly...top and bottom of each leaf..and the vines, and keep out of bright sunlight for a day or two. It's perfect that you removed the "bad" leaves..the fungicide would have never "cured" these leaves...if, indeed, it's a fungal attack. Please be sure that you're not over-watering this plant...fungus tends to occur when the plants are kept too moist or in very high humidity. Best wishes, Patrick

Hi! Farmers prefer polyembryonic rootstock for uniformity. It makes pretty much sense for farmers who set out to propagate acres & acre of mango trees, making use of many of seedling root stock waiting to be grafted on to. They choose a variety of known-good & vigorous rootstock, and the only way to get uniformity of seedling is by, of course using polyembryonic seeds. The seeds have to be from a variety that is known to be a good grower. Like in the Philippines, farmers use carabao mango seeds which are polyembryonic, and happen to be good growers. Yes, they'll one day bear fruit that is true to type, but farmers still prefer to graft on them... They graft a carabao mango scion onto a carabao mango seedling rootstock. However, as a hobbyist gardener it probably wouldnt matter what you use as rootstock. As said, if you think your monoembryonic seedling looks vigorous enough to be used as rootstock, then go ahead and graft onto it. I have planted 5 mono seeds of mahachanok mango and they all turned out different. 3 were small, one even died, while two grew very fast. . It does take time to create rootstock from seed. Lots of time probably get wasted when monoembryonic seeds bear weak plants. As for choosing a scion, I would expect for you to get it (the cuttings) from a mature tree of known-good variety, or of the variety you desire and not from another recently planted seedling. That's because getting the scion from an already mature tree of fruit bearing age guarantees that your resulting grafted tree will fruit much, much sooner. Best regards! Zig

Oh boy, he was lucky dad found him! Our younger son is "directionally challenged", and can get lost turning around. glad it all turned out ok.

Crossing fingers, too. When he is offered the job is a good time to mention that he will need a day off in June. He should offer to take the day unpaid. He doesn't need to tell them why, only that something was preplanned.