[Fen]

I am thinking of sowing some peas specifically for harvesting the tops as "Pea Shoots" for trade  locally. (swap a small bag for a pint in local foodie pub)
Perhaps starting a few in an unheated greenhouse in February before the cues and toms go in.
Does anyone have experience of which type, height or variety would be best?

[DD.]

For early sowings you need a round variety, Early Onward, Feltham First, Kelvedon Wonder etc..

But I have to say what you intend doing with them brings a tear to my eye.

[gillie]

I had some soaked peas left over after sowing in the conventional way so I put them in the cold frame, sown very close together and with the varieties Douce de Provence and Spring mixed up.
 
It worked well for a harvest of pea shoots, but I have to say that I find the tendrils too stringy.

I would suggest any variety would do, though preferably a dwarf one, and definitely sow them very close together because the plants are not going to get to any size.

Cheers,

Gillie