you cant figure this one out for yourself and WERE slow in the head?0 answers. this is why the world never wins. the humans are slow in the head i think.
Actually this is a good question . . . kinda hard to answer. Basically, if your roots have unlimited space when the plant is tiny, the above ground vegetation will wait/stall until the root-ball is sufficiently established to kick the plant into vegetative production.
Also, it's hard to water such a planter properly with just a seedling growing roots.