each year about september when the tomatoes have finished i put all my pots of bulbs in the greenhouse, this year for some reason they are starting to show how can i slow them down as they are months to early.
My spring hanging basket is showing too, the shoots have been up for weeks - it's the change in the seasons. I keep my bulbs outside though, they have to take their chances - the ones in the greenhouses now are surely flowering for Christmas?
are you growing prepared hyacinths for indoors or are they garden ones for spring flowering? Either way you can only slow them by cooling them down so dont put them in the greenhouse.