It sounds like you have almost everything you need for growing sweet peas, though you will probably want to mix some compost into your clayey soil to make it drain better. (Check out our page of soil types for more info.) If possible, do a pH test on your soil as well, as sweet peas like it a bit alkaline. They are slow to germinate, so you’ll want to start them fairly soon!
It sounds like you have almost everything you need for growing sweet peas, though you will probably want to mix some compost into your clayey soil to make it drain better. (Check out our page of soil types for more info.) If possible, do a pH test on your soil as well, as sweet peas like it a bit alkaline. They are slow to germinate, so you’ll want to start them fairly soon!