My polytunnel is filled with sowings here in May, and I just keep sowing!

Most of the vegetables I have already sowed this year, I also sow in May. Plus a few new ones of course. I keep pre-seeding a lot so that I have a little arsenal of plants I can put in the beds later, and direct-sow too.

This is what I sow in May:

Indoors, plant outside later:
Cucumber
Squash
Naked-seeded pumpkin
Corn

Indoors, plant in polytunnel 1:
Cucumber
Melon
Mouse melon

Polytunnel, plant outside later:
Purslane
Lettuce
Scallion
Late cabbage
Late savoy cabbage
Late red cabbage
Chinese cabbage
Black kale
Green kale
Purple kale

Outside:
Winter carrot
Summer carrot
Welsh onion
Fava beans
Snap beans
Wax beans
String beans
Petit pois
Sugar peas
Sugar snap peas
Onion set
Seed potato
Summer flowers

The only vegetables I don't sow in May are radishes, arugula and spinach. They usually only bolt now that the days are so much longer and sunnier.
/Sara Bäckmo