Is there a deadline by which  flowers must be ordered for overnight delivery?

Yes. We are only a small company and pick every box to order. We also need to check availability and deliver to the Post Office. Therefore you need to order your flowers by 4pm for orders to be confirmed and payment made. The flowers will be picked and dispatched the following day. They will then arrive by 1pm on the subsequent day. eg You will need to have ordered by 4pm on Tuesday to receive flowers by 1pm on Thursday.