You can wrap their bases with a porous bag of hydrated gel--like a yolk sac for saplings. Logically, it would be best to use industrial processes to factory-as

You can wrap their bases with a porous bag of hydrated gel--like a yolk sac for saplings. Logically, it would be best to use industrial processes to factory-assemble a package that results in the lowest cost per established new tree when it is left in the wild with no further maintenance. Existing tree seeds are cheap and stupid, and limited by the state or the art in tree-seed technology, which is essentially to coax an animal into eating a fruit and crapping out the seed elsewhere in a nice, fertile pile of dung. Humans can do better, by sprouting the seeds in a controlled, indoor facility, culling any unsuitable saplings, and granting the sapling additional resources that the parent trees could not provide before planting it in a location distant from the parents that is already known to be suitable for the adult tree. ~Alternately, leave Robo on tree-planting detail, and skip ahead 1000 years in the Epoch to pick him up.~