The past 2 years, we've been hit by cold weather in late winter/early spring here in Tuscany,Italy,which withered almost all of the flower buds on my young "Prolific" wisteria. I'd like to avoid having this happen again, but what with climate change and global warming,I think it might be better if I look around for stategies that might help protect the flower buds at this delicate phase.
I was thinking about trying,for example,using a sort of "screen" of that white synthetic cloth that is used to protect plants (don't know the name in English),to prevent the plants from the wind. I've also read of people using Christmas lights on their fruit trees to add a bit of warmth. There's no electricity out at my garden, so if I tried that they'd have to be solar or battery-powered lights...
Any thoughts or expereiences would be greatly appreciated!

We have used moving blankets for protection from both frost and hail.

Bart,
My understanding of frost damage is that the moisture in the air condenses on the plants and when the temp drops low enough frost forms on the dew as well as in the plant tissues that are exposed to said moisture. A thin blanket or row cover (that was the word you were seeking) draped and secured with clothes pins should be enough to shield the buds from damage, without damaging the delicate buds.
Here in New England apple farmers also use large fans to move the air on nights when frost might hit the apples. That won't work for you, since you said there was no electricity out there, but it might for others who have a similar problem.
Good luck with your Wisteria- they really are stunning. Your English is great too by the way! Way better than my Italian 😉

Thank you SO much,Jen! Actually my English is better than my Italian, lol- I'm an American ex-pat who's been living in Italy since 1983...
Yes, I'm going to try the row-cover stuff (already have one plant covered). It's been overly warm, but there is some cold weather in the forecast...