It’s a nice surprise to discover that what you have considered a real nuisance in the veg patch, could in fact turn out to be a blessing. I’ve been plagued with chickweed for well over a year now in the small polytunnel. God knows how it got in there, but clearly I unwittingly let some of it go to flower, and the result has been a persistent, interminable weed problem.

It’s a formidable foe, with each flower being self-fertile and each seed pod producing up to a further 2,500 seeds.