5-10 years ago i was told of hanging gardens particulary tomato plants in buckets, hanging off the closeline pole,
i grew cherry tomatoes like this (through a 1" hole in the side & bottom of a 5 gallon bucket) the fruit kept the stem pulled downwards..
BUT, thinking along the same lines, a sapling coming out the bottom of the bucket would naturally bend in a radius upwards, consideration of where to make the hole in the bucket, might provide enough room to plant multibles in the same bucket, much more daily attention is necessary to make sure it stays watered..
- the bonsai trees (little trees) are trained with copper wire, then potbound and then kept on the edge of dying to miniaturize whatever species they want..
- if you plant a tree in a pot dont let it get root bound, that hampers the growth, best to start it in a small pot and shift it up successively bigger pots as its needed..
here in louisiana's tropical climate, i had to move my tomatoes to a place that was in the shade after 2pm in the the hotter july-sep sun because they just got cooked if left in full sun.
Lots of seeds need to be tricked before they germinate,
by putting them in a paper bag into a freezer up to 2 weeks, even warmer climate seeds can be tricked into thinking they been through a winter...
other seeds hard shelled like, magnolia, dogwood, red bud tree seed, are in a hard shell, like most fruit tree seeds.
Natures design is to offer the fruit to birds who eat the seed and all which passes through the stomach acid of the bird, then deposited in manuree,
pre-softened and ready to sprout, with moisture and time..
un-eaten seeds usually never sprout as the shell isn't weakened .
i dont know if pre soaking seeds like you do okra seeds would give you better success in making them to sprout. couldnt hurt...
this state is lousy with sychimore, willow, catalba, alder, cottonwood.
walking a railroad track or an un-attended property should provide many sticks, if dug bare root the cane sized root mass should be formed easier than steam bending,
maybe this is something to do while your sprouting your seeds...
hope some of this helps
thomas