what do you think of having gardens on top of each other?

Question

for example, to save space i decided to grow planets on top of each other instead of next each other. for example:

instead of this:
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it will be like this:
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will planets grow normally like that?

Answer 1

Consider the requirements of root space and sunlight. I don't really understand what you mean though.

Answer 2

You can do this with certain annuals because they die after the year.However I think it wouldn't be a good idea with perrenials because they need space for the roots to grow.

Answer 3

i don't understand... are you creating tiers or are you planting and then burying and the planting again or do you have shelves of some sort?