really depends on how good the soil is outside but you will probably have to mix in better soil or amendments.
they need to be cared for like an indoor plant sort of, if its dry and hasnt rained much you will have to water and will probably need to fertilize unless you add enough amendments or mix in soil with slow release fertilizer then you may not need to fertilize much if at all.
you may need to weed occasionaly and protect them from animals by using wire netting to form a ring around the plants.