We have a promo code that allows you to 'add to your order' (i.e. place a 2nd or 3rd order) before the cut off (at 8pm on Sunday) for each Monday's delivery-run without having to pay for shipping again - just enter the promo code MOREPLANTS at the checkout and it will remove the shipping fee.  Please note that we monitor the use of this promo code and hope that everyone can use it in the way it is intended. It is not intended to be used to get free shipping on your first order that you place in that shipping cycle (8pm Sunday - 8pm Sunday) and orders that misuse the promo code are likely to be cancelled.