Posted: 09/07/2015 at 19:05
The seeds are very small as WW said. Collect from the middle of the spire as suggested. Sprinkle them sparingly on top of damp seed compost, John Innis no. 1 is good for this. You can mix the seeds with sand if it helps (not builder's sand). Label them.
Leave them somewhere safe making sure they don't dry out.
When they are large enough to handle, prick them out gently and transfer to very small pots or plugs.
They'll die down over winter but don't worry about that.
When they start growing again you just keep potting them into larger pots, 1" bigger each time until they are the size you want.
Hope that helps .