https://www.bhg.com/gardening/plant-dictionary/annual/moonflowerMoonflower is one of the most romantic plants you can grow in a garden. The large, trumpet-shape flowers unfurl in the evening and stay open until the sun rises. Several varieties of moonflower also give off a lemon fragrance when its flowers are open.
The ones I grow do have the delightful fragrance!
Any other gardeners have a “special for them” flower??