Spotted this today
Go into Morrisons and buy 2 bottles of Robinsons Fruit & Barley (on offer for £1 a bottle). Keep your receipt then go to
www . freegardenplant. co. uk and download the claim form. Send that in with your receipt to a Freepost address and they send you a free sunflower plant pack - which I think is seeds and a pot to grow indoors, and a Let's Grow voucher if anyone is collecting those for schools!