Posted: 02/10/2016 at 15:12
well, should have listened to my wise word of wisdom...ha ha
My cosmos are huge too but pinching out is not necessarily about restricting height it's more about producing sturdy multi stems. So, as you say,,a lesson learned.
No,,they are annuals Meomye so enjoy them for as long as you can and then put them on the compost heap.
can you support with a few tall canes? Cut off flowered stems too to reduce weight. I think we will have several weeks left yet so worth supporting them
not really an annual person but, yes, cosmos are impressive part of the summer/autumn garden