Is there any proof or details of how they did this? 350,000,000 is a lot of trees to source, distribute and plant in one day.
When we hear of tree planting we picture a mayor or rich person planting a four year old tree in a park. The reality is that trees grow from seed.
In the case of commercial forestry all the trees planted won't make it.
A better vision of tree planting is Johnny Appleseed.
Edits. The Twitter from the Ethiopian minister says tree seedlings.
Yeah but trees are hardline r-strategists and produce millions of disposable seeds with a very low survival rate. Planting a seed is in no way equivalent to planting a germinated, sprouted, and developed seedling.
Personally I'd expect a sapling to be the minimum developmental stage to qualify as "planting trees".
Many trees could be said to have been planted by someone scattering apple seeds out of their pockets.
I think there are a lot of countries finding out that they are not passive participants in the curve balls nature is throwing them and that they can influence what happens with simple, low tech solutions like planting trees and taking care of them and maybe a few simple changes in behavior like keeping sheep and cattle away from volatile areas.