where to find japanese mulberry leaves for shrimps?

[Asia_landscape]

Hi apples nail,
How do u feed the shrimps with mulberry leaves?

I found some wild organic leaves from Woodlands.

When I drop them into then tanks, they don't seem to eating the leaves.
Oto and shrimps in my tanks.
(I clean and boiled the leaves for a short while before dropping in)

Alan