A sunflower isn't just a pretty face at the back of the border — it's a hard worker that can shelter, support and feed the plants around it. Here's how to make the most of it, and the few neighbours to keep at arm's length.
This is the loveliest trick, and the one most people never think of. A tall, strong sunflower stem makes a ready-made support for lightweight climbers — no canes or netting required. Sow a few cucumbers, peas or climbing beans at the base of an established sunflower and let them scramble up as it grows. The sunflower gets on with reaching for the sky; the climber gets a free ladder and a bit of shade at its roots.
A couple of tips to make it work: let the sunflower get a good head start and become properly sturdy before you let anything climb it, and lean towards a giant variety if you want a support that can take real weight. A slender ornamental type won't hold a heavy squash vine, but a Mammoth or Titan will barely notice.
Gardeners have grown plants in helpful partnerships for centuries. The best-known is the Three Sisters — sweetcorn, beans and squash grown together, each helping the others: the corn is a living pole for the beans, the beans feed the soil, and the squash sprawls below to shade out weeds and keep moisture in. A sunflower can play the "tall sister" role beautifully in place of (or alongside) the corn, giving beans something sturdy to climb while its big face draws in pollinators. It's a charming, productive little community in one patch of ground.
Even if you grow nothing else nearby, a sunflower earns its place by pulling in bees, hoverflies and butterflies — and later, seed-loving birds. Plant it near your fruit and veg and those extra pollinator visits can mean better crops all around it. A row of sunflowers along the edge of a vegetable bed is both a windbreak and a welcome sign for every helpful insect in the neighbourhood.
Sunflowers are greedy. Those deep roots and hollow, thirsty stems pull a lot of water and nutrients from the soil, so anything planted too close has to compete — give hungry crops their own room. Many gardeners also keep sunflowers away from potatoes, and it's worth knowing that sunflower roots and fallen seed hulls can mildly discourage some nearby plants from thriving, so start delicate seedlings a little further off. None of this is a hard rule — it's just about not making your other plants fight for their supper.