i agree with pineislander
logs at the base help keep the ground moist.
i use cardboard and woody mulch, and bits of rotted logs.
and unless you have rich soil i would add a bit of iron and epsom (or other magnesium)
it darkens the leaves , i use that combo on all plants with a lot of shade.
and i doubt you would get fruit, or a decent plant in anything under 7-10 gal,
and it would need constant water