Posted: 06/09/2013 at 11:19
I thought I had posted something on sowing Allium seeds, I certainly did on the old Beeb site.
They need a cold period to germinate so, they ought to germinate in Spring.
Collecting the seed is easy, when the little capsules at the top of the old flower stem begin to open to reveal little black seeds, is the time to collect and sow. Turn the seed head and stem upside down in a paper bag and let the seeds fall out. If they refuse to then you need to split the cpasules and release the seeds that way.
This is the peice I wrote for the Beeb many moons ago.
Sow the seed fresh. It germinates better straight from the plant rather than being dried off.
Cover lightly with grit, gravel or whatever rather than compost.
Sow in a deep pot rather than a seed tray (reasons later).
Leave exposed to weather. They need a period of cold followed by warmth to initiate germination.
When (if?) they germinate do not be in a hurry to p rick them out. This is the reason for deep pot rather than seed tray. They have only one root to begin with and if it is damaged, it dies and a new one has to be produced from the base of the seedling. usually they die.
Feed the seed pot with dilute Baby Bio type stuff, until the leaves go yellow then allow the pot to dry off.
Repotting may be done when they are dormant. Some types never really go dormant so be careful.
I often do not repot until they have had another seasons growth. Remember many of them actually grow in late winter/early spring.
Cannot think of anything else for the moment.
Not as hard as it seems.