There place a bench or swing where you may linger on nights of full moon and marvel at how sex and the reproductive urge in plants has resulted in such a mystical, romantic effect. When selecting plants for a moonlight garden remember that there may be many varieties of a single species, and often these will include a cultivar with white flowers. For example, Syringa vulgaris is the common purple lilac, but the cultivar 'Miss Ellen Wilmott' blooms pure white. Camellias are often pink or red, but the cultivar 'Alba Plena' is also white. Therefore it may take some research, but you will be surprised at how many white flowering gardens plants you can find with a little reading.
Fragrance is the second factor, but just a few species emit fragrance only at night.
It's much simpler to plant those with pale colored flowers and all around fragrance to incorporate this factor into your plan. Don't forget the aromatic foliage plants either because a tiny garden of manicured herbscan be quite powerfully scented. The following plant lists contain species that are typically white flowering, or those with silvery foliage that becomes dramatic under moonlight. They are by no means every option available but should help with selection. There are hundreds of different varieties of annuals which bloom white, but only permanent plants are mentioned here.