If money is tight, and you have some clubcard points, you can order 10 strawberry runners for £4 worth of clubcard points, I'm thinking of ordering some and then bunging them in hanging baskets so biggest small child does not eat them as soon as they turn red. He was a right b****r for that last year, if I put them in hanging baskets he won't be able to reach (evil mummy!!).
Blooming direct has got a buy one get one free on their website, if you go through the TopCashBack website you'll get 95p ish back, and they also have a 5% discount code (think it's blooming5), type that in at the checkout, and they work out at £5.50 ish (including delivery) per basket. Type topcashback into google, and that will take you to the cashback site. I'm a big fan, I do tend to buy a lot of stuff on the interweb, I've had just short of £100 back in a year, but you have to remember to go through the site. Lots of gardening sites registered on there, T&M, blooming direct (crocus I think), others too, like debenhams, play, etc etc. You can choose to have your 'cash' as Amazon vouchers and they give you an extra 5% on top, which is useful (especially when oldest small child has started getting invited to birthday parties and is required to turn up with a small gift).
I tend to spend all my clubcard vouchers on the offers, and never seem to save up enough for the £45 worth of T&M vouchers (so then you'd only need to spend £15 of actual money to get free delivery). Heigh ho.