By Daisygarden
North Yorkshire,
United Kingdom 
Can some one help me out Iv grown alliums in a pot. They have grown up about 30 cm and have a flower head on then, a few days later the stem it's folded in half.
Where am I going wrong
22 May, 2016
Answers
I would agree with Karen that it may be lack of water getting to the heads to keep them upright. Perhaps one of those long metal rods with a ring on the top could help to support them. Or this type of thing - I am sure you can get them in smaller quantities!
http://www.ebay.co.uk/itm/25-X-10-INCH-25cm-PLANT-FLOWER-SUPPORT-RING-FOR-BAMBOO-CANES-/272242228963?hash=item3f62e6bee3:g:F9sAAOSwPcVVxk2E
22 May, 2016
Thank you Iv moved then to the back garden where it's slightly more shaded. I thought I might get them in a bigger pot too. Thanks for your answers
22 May, 2016
is the stem chewed through if yes then its likely to be slug damage.
22 May, 2016
Slugs/snails have this nasty habit of just removing the outermost layer of skin on the stems and then the stem keels over.
22 May, 2016
Oh....what a shame. Do you have a Labrador by any chance? ;) If not, then I can only think it could be lack of water or wind damage. Hope someone else has a better idea.
22 May, 2016