The best perennializing garden hyacinth I've grown is 'Innocence', the standard white one. It has increased for more than 20 years in my former garden. The dark crimson 'Woodstock' flowered every year but didn't increase on its own. I usually grow a pot or two of hyacinths for the patio -- they can be too fragrant in the house -- and plant the bulbs out after they go dormant. My favorite pot is white and two shades of blue hyacinths in a wide blue-glazed container. Sometimes you can purchase "Roman" hyacinths, also called "multi-flowering," which produce two or three stems per bulb and increase well. They are small and come in blue, white, and pink. Good perennials in this region (Pacific Northwest). Flowering in the bulb house now are Hyacinthus orientalis ssp. chionophyllus (Archibald collection), which I think is a high-elevation form of the ancestor of the garden hyacinths; it is small and bright blue, very fragrant. Also, H. litvinovii (Mike Salmon collection), which is a larger plant more resembling the garden hyacinths, but the flowers are rather dull in color, being white with gray-blue accents. Another I have is H. tabrizianus, but it is too young to flower. Along with these there are many species of Hyacinthella coming into flower. These are very small plants, mostly with bright to dark blue flowers, and one white (H. leucophaea). I think the only one commercially available is H. dalmatica 'Grandiflora', which is in fact more impressive than the wild form of that species, which I grew from seed. Though they don't increase vegetatively as far as I have seen, hyacinthellas are easy from seed and pretty in a container. Jane McGary Portland, Oregon, USA