Hi, as promised, this is a thread for those who wish to learn the basic facts for successful sweet pea growing.
Sweet peas are really very easy to grow. You may simply sow the seed in the soil/pots where you intend them to grow in March or April (according to the prevailing weather conditions) and leave them to it, by July you should have flowers.
However, to get the best from your seeds you should consider sowing them in the autumn; this will enable you to have stronger, earlier flowering plants and is the preferred option of those who grow for exhibition quality blooms.
Depending where you live, this can be done between now and early November i.e. now in the north and probably another couple of weeks time in the south. I live in the Midlands and usually sow in mid-October, depending on the weather.
First of all, try to buy the very best seed you can afford, study the catalogues and be sure to choose the types & colours that suit your needs.
Over the years I’ve grown the seed of most of the top specialist and have reached the conclusion that Eagle Sweet Peas tick all the right boxes for me.
Next you’ll need seed compost (not multipurpose). My own preference is for John Innes seed compost; this is loam based compost although non-loam types are suitable, provided it is specifically for sowing seeds.
Finally, you’ll need some type of starter pots. These usually come in the form of grow-tubes…anything from cardboard toilet roll middles, to those sold specifically for the purpose.