"N" is for Nyctanthous ...
Nyctanthous - adj. In botany, of flowers, opening only at the approach of twilight or in the night, or, of plants, having flowers which so open.
My twilight garden would consist of Moonflowers (Ipomoea alba)
Four o'clocks (Mirabilis jalapa)
Dusty miller (Senecio cineraria)
This is a wonderful book to have on Twilight Gardens ...
So as I dream of a moonlit paradise you have my letter "N" for Jenny Matlock's Alphabe-Thursday. Please stop by to see what other words students have submitted.