Learn Farsi: این گل‌های وحشی چیدنی هستند، اما ماندنی نیستند. - These wild flowers are worth picking, but they are not lasting.

Both words use the structure you are learning in this lesson: an infinitive verb plus the suffix -ی (-i). چیدنی (chidani) comes from چیدن (to pick) + -ی, and ماندنی (mandani) comes from ماندن (to remain/stay) + -ی. This creates an adjective that describes capability or worthiness.

Why does چیدنی mean 'worth picking' but ماندنی translates to 'lasting'? Doesn't the suffix -ی always mean 'worth doing'?

The suffix -ی added to an infinitive can mean 'worth doing' (like a recommendation) or simply 'capable of being done' (a state of being). Here, چیدنی means the flowers are good to pick or pickable, while ماندنی literally means 'capable of staying.' In English, we naturally translate 'capable of staying' as 'lasting.'

Why is there a ی (ye) in the middle of گل‌های وحشی (gol-ha-ye vahshi)?

This is the ezafe, the grammar link that connects a noun to its adjective. Because the plural noun گل‌ها (gol-ha) ends in a long 'a' vowel, you must add a written and spoken ی before the ezafe vowel so the pronunciation flows smoothly. This makes it sound like 'gol-ha-ye' to prevent two vowels from clashing.

Why doesn't the sentence use این‌ها (these) at the beginning, since the word 'flowers' is plural?

In Farsi, when a pointing word like (this/these) comes directly before the noun it describes, it always stays singular, even if the noun itself is plural. So, we say (literally 'this flowers') rather than .