Crocus sativus blooming?

John Grimshaw
Sun, 02 Mar 2014 13:27:05 PST
I think Peter is making a distinction with little difference here: in both
bulbs and corms the flower buds develop on a growth shoot, but in a corm the
growth bud develops superficially on the swollen stem that forms the storage
body, whereas in a bulb it grows from the compressed stem found within the
whorls of swollen leaf bases/modified leaves that form the bulb. In
consequence, the development of flower buds in a cormous plant occurs as the
shoot expands 'once growth resumes', and is thus more visible. Dormancy is a
difficult word - it is a mistake to think that nothing is happening in the
depths of a bulb in summer, just because nothing can be seen, whereas in
fact the shoot is organising itself to greater or lesser extent.

John Grimshaw

-----Original Message-----
From: []
On Behalf Of Peter Taggart
Sent: 02 March 2014 18:59
To: Pacific Bulb Society
Subject: Re: [pbs] Crocus sativus blooming?

This is because the plant is a corm and not a bulb! Unlike true bulbs, corms
do not form the flowers within the corm during dormancy- the flower buds
develop on the growth shoots.
Peter (UK)

On 20 February 2014 00:23, Gastil Gastil-Buhl <> wrote:

> The abstract says more cold is required to initiate bloom than to form 
> the blooms in the corms.

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