Here are two photos of tea stalks in their natural habitat:
I've never seen those myself when I made tea, and I've been making at least two cups of tea every day for the past six years.
Is it a Japanese tea thing? Is it sorted out from the leaves in other regions? I've been buying some export green teas from Japan (sencha mostly) but I've never had any tea stalks appear in my cups. How do I get them?