Peas should be sown successionally, which means, sow a handful one month, then another handful the following month, and keep sowing until August. If you sow your peas this way, then when one lot has finished, the next lot is ready.
You’ll have peas throughout the summer. Mangetout and Sugar Snap don’t freeze at all, so they need to be harvested and eaten straight away.
Here’s how I sow mine.