https://www.uprtek.com/en/blogs/what-is-pss
What Is Phytochrome Photostationary State (PSS) in Plants?
Aug 19, 2026 - Learn what Phytochrome Photostationary State (PSS) is and how grow lights influence plant responses such as sprouting, flowering, and fruiting.
what isphotostationary statephytochromepssplants