Keep pots somewhere warmish with enough light for seedlings
Sow some climbing beans ready for planting out at the end of May. They can be sown individually to save potting on any further before planting them out.
Use pots filled with peat-free compost. Push the seed in by 3cm. If you’re not sure which way up they should go, don’t worry – the roots will always extend down and the shoots will always grow up.