When I plant forced hyacinths I usually leave a half-inch gap between each bulb. I then cover most of the bulbs with bulb fiber, so just the tips are poking out, lightly dampen the fiber, and place ...
When choosing a pot, you’ll need three to four inches of growing space ... for forcing hyacinths. You place the bulb on the top of the vase, and fill it with water to the root level.