This section is from the book "The Gardener's Monthly And Horticulturist V24", by Thomas Meehan. See also: Four-Season Harvest: Organic Vegetables from Your Home Garden All Year Long.
If we take a blue Lilac and grow it in the dark, the flower becomes white, at least this is our belief, though we do not know this from personal experience. We should suppose this would be the case with all flowers, and that if a blue hyacinth were made to flower in the dark it would become white ; but a hyacinth that flowered underground was placed before the Scientific Committee of R. H. S. by Mr Cummins, gardener to A. H. Smee, Esq., Wallington. The spike in rising had encountered a stone, and as it could not go up it went down and developed its flowers six inches below the surface. The foliage was blanched, but the flowers were richly colored with the proper blue of Baron Van Tuyll.