So I went through the guides but turns out the only guide we have on culling, is outdated enough that it was made when PPPs sold for more than 2k.

However, I am lost. I know I have a lot of horses in need of culling, but I don't know how. To everyone versed on the matter, what do you do to cull?

I own no W's. My mare string comprises of EE-EEE mares, and I cannot afford to buy W stock either. So I'm looking for what is good and bad for PEE-EEE horses, and when to get rid of them.

PEE mares are not worth it anymore unless colorful or have a really top/strong pedigree and good training (3+ up wk 4 and all up wk 5). As for EEE mares, I don't keep anything that's up less than 4 wk 4 and all wk 5. Keep your stock as strong as possible. I don't buy anything with a non ABLB x LB pedigree and PEP+ production.

Also, invest in top matches not on your own stock until you have some EWE+ mares

There are a couple of good culling blogs (go search blogs, scroll down the page and search by tag "culling"). It helped me a lot starting out.

As a main culling factor I take production. Regardless of rating I expect my mares to produce at least their own rating, preferably better ratings. So if a PEE mares is a strong producer giving me EEE foals, I'd value her more than an EEE mare only producing PEE combos.

When there's no production yet I take training as an indication. Again I make no difference between the ratings, PEEs can train just as well as EEEs. Of course training is just a vague indication however I've never had a good horse being down more than 1 bar week 5 or 9. In training I'm more focused on eliminating weaknesses than promoting strengths. So I want my horses all bars up week 5 and 9 than be fussed about week 4 or 8.

In the end it also depends on what you want to do with your stable. Do you want to built up your own line? Or do you want to make the LBs as fast as possible? Add some color? Add a certain pattern? The more you know what you want the easier it is to decide whether a horse makes the cut or not.