Thank you for asking!
Yes, there are some news. Firstly i got my first fruit, grown from flowering to the dining table of my home!
http://tropicalfruitforum.com/index.php?topic=17258.0There are some good news and some bad news, that i won't detail in that thread but i will detail here, for anyone that in future may want to repeat my experience, for them to draw from my trial and error.
Firstly last winter has been really positive, with pretty high temperatures so the foliage remained pretty green and healthy even under the covering.
As usual, my first flowering emerged very abundantly but almost all the flowers were deformed and so I have been forced to remove them. This because I wanted to grow healthy looking fruit. In last years i observed that removing the flowers in the first decade of April leads to a flowering in mid to late june; that's too late for my objectives (that is having some developing fruits in the june-august time frame). Also, last year a pretty hot april suppressed the second flowering, so this year, to avoid such issues, unlike the previous years, I convinced myself to remove the flowers in March.
After that i treated my plant with a 4 weeks nitrate of potash treatment to maximize the second flowering. This apparently worked, even if not as well i hoped, still i got a dozen of very healthy panicles on my plant.
Maybe, related to the treatment with nitrate of potash, i had an alarming event during the flowering; many leaves did drop, and I went pretty alarmed; but during the flowering the plant reacted vigorously with a new growth so the ratio leaf/fruit remained reasonable.
The flowering reached the apex on the first days of june. That was the perfect timing in my opinion. The fruitlet started to develop nicely when something happened that still puzzles me. During the inspection of the flowering i did discover between the panicles a very small and deformed fruit coming from the first flowering that i forgot to cull when i removed the first flowering.
Now i got heart to remove the flowers, but ain't any heart to remove developing fruits. So the fruit, even if it was deformed, remained.
About 15 days after the end of the flowering we got a severe storm coming from north; the temperature dropped to 13°C at night and now i guess that the rain was pretty cold too, but i'm going to assume that it didn't get any colder than the air. However in the week following the rain EVERY fruitlet did drop. Most of them had inside a small healthy embryo. Why they dropped? The rain was too cold? The quick change of idratation for the plant shocked them to drop? Did the rain produce any rot at the attachment point?
Well, it was a bummer; at the middle of june i got a very healthy plant with a perfectly timed flowering completely stripped by its fruitlets by the last storm of winter. But not for the small deformed fruit of the first flowering! This was covered by the leaves, and went fine trough the storm and the fruit drop. Still i don't get why.
However, fast forward to now; the deformed fruitlet of the first flowering did really develop in a "eatable" fruit (well, part of it was pretty good honestly, while some other was just immature) even if, i must admit, that's not a beautiful fruit. But it did confirm my datas; Glenn mangoes can and will ripen here in the second half of august (the exact time is very related to climate and time of flowering) now i just need to find a way to get a good pollination and fruit set that seems the trickiest thing to do in my climate.
My plant about 15 days ago (got another flush in the meantime):
