Double Up seedlings ?

This year I will be growing my Sweetpeas 2 to a pot , so I will be planting out "double" plants in early April . This was a method I read on the Sarah Raven site.
I have also bought this year some American fuseable Bacopa seeds , which will grow the white and blue together ( hopefully ! ) Not seen these over here.
http://www.panamseed.com/plant_info.aspx?phid=008506198013119
Now when I am pricking out some of my small seed seedlings you will get clumps of 3 or 4 seedlings together . I have always separated these losing some seedlings. If you plant them as a clump will they prosper or compete for a limited root system ?

 

I sow several seeds in each cell and they all (if they all germinate) get planted together in a clump adjacent a single cane and those that survive the slug attacks grow into a bit of a jungle which leads to quite a few flowers getting damaged when neighbour's tendrils grab them.

But I'm growing for quantity rather than quality and the biggest crop is the seeds which are sown and sold as young plants the following year (saved. over 2,000 last year, or was it 3,000?). At the height of flowering we have at least one vase of sweet peas in virtually every room and we give the rest away. It's a relief when we make the decision to stop picking and let them produce seed

 

Don't see why not, so long as they are not crowding each other for light. But as they [Sweetpeas I mean] grow "straggly" fairly quickly I doubt that they will.

I'm sceptical that 2-in-a-pot will fare as well as a singleton will ... but it may only be a, say, 5% gain and a 50% saving in staging space at this time of the year is not to be sniffed at

 

Well there is only one way to find out . I'll try a few "clumps" when I am pricking out in the next few weeks, and try and see how they fare as compared to singletons.