Start sowing in May

More seed sowing advice:

• May seed sowing with Adam and Monty
• Your May seed sowing jobs

May seed sowing inspiration

Plants featured in this video

Sunflowers

Now the kids have left home I no longer have an excuse to hold an annual giant sunflower competition – but that doesn’t stop me having a go myself! I usually manage about four metres – but the current record holder is more than nine metres tall, so I’ve got a way to go. Multiheaded sunflowers are shorter, at a mere couple of metres, and come in gorgeous shades of bronze and red as well as classic yellow.

• Unusual sunflowers to grow

Larkspur

I find sowing annual larkspurs a little later in the year helps avoid both slugs and soggy, chilly soil – both of which can do for earlier-sown seedlings. Sown this month, they spring up like cress. Annual larkspur is much daintier than its big, showy perennial cousin, the delphinium: its 1m tall spires of delicate bells come in blue, white or pink and are best sown in great drifts so you can cut as many as you like to bring into the house and fill your vases with colour.

• Complete guide to growing larkspur flowers

Sweetcorn

Corn on the cob, cooked within minutes of harvesting and dripping with melted butter - it makes my mouth water just thinking about it. I sow mine into saved loo rolls to germinate on a shelf out of reach, as mice are very fond of stealing the seeds. Once seedlings are about 15cm tall I plant them outside in blocks – they’re wind-pollinated, so you get more cobs if you group them together.

• How to grow sweetcorn

Borage

It baffles me why more people don’t grow borage. Perhaps it’s because it self-seeds: but the seedlings are easy to pull out, and besides, whyever would you want to? Those clear blue, starry flowers are bee caviar and bring pollinating insects flocking when planted under your crops. They’re edible, too, tasting of cucumbers: I freeze the flowers in ice cubes to add a touch of style to my evening G&T.

• How to grow borage