طحلبَ يُطحلب، طَحْلبةً، فهو مُطحلِب

علاه الطُّحْلُب، كثُر طُحلُبُه

🇬🇧 Translation:

Algae covered it, its algae became abundant (To be covered with algae/moss).

اخضرَّت بالنبات

🇬🇧 Translation:

Turned green with plants (To become green with vegetation/moss).