On 22/05/2019 13:54, Chris Hogg wrote:
On Wed, 22 May 2019 13:15:43 +0100, Martin Brown
wrote:

Bulbs in flower don't take all much out of their growing media.
Hence you can grow them in bulb fibre or even a hyacinth glass.

Yebbut if you want them to plump up and flower again next year, surely
you need to feed them?

They are not very greedy. Hyacinth glasses pretty much ruin the bulbs
but in any compost provided that you allow the leaves to die down
naturally most bulbs will regenerate with more than enough to spare.

--
Regards,
Martin Brown