My potted hyacinth
Early spring bought two pots one blue one white, after flowering left greenery to allow bulbs to store energy,then they went outdoor in late spring , where they stacked under eave of back porch getting plenty of sun and rain.....yesterday July 31 went to empty pots, found they were both very well rooted, healthy, and the whites are now showing green leaves appearing, with maybe Autumn hyacinth to come.....should I re-pot in soil leaving green tops to grow, water glass these good roots in water vases or just ignore and put in storage??
Certified GKH Gardening Expert
You can plant them outdoors once it cools down some. These will appreciate the cold, and need it to produce properly next year. Its wild cousin is invasive in your zone, so these will do quite well also. They will do much better in ground than in glass. This is purely ornamental, and not healthy for the plant.
This article will help: https://www.gardeningknowhow.com/ornamental/bulbs/hyacinth/planting-and-care-of-hyacinths.htm