My seed carrot patch is starting to dry down and carrots is one of the so-called biannual crops that I started planting at the same time it naturally plants itself. Leaving them to self-seed and come up on their own doesn't work though because they won't sprout until it rains and if they do sprout will likely die from drying out as small seedlings soon after.
I started prepping a spot for them yesterday, it's about three feet by fifteen feet. It's been hot and dry here to the point I had difficulty gathering enough weeds and stuff to mulch it all good. I had to gather some green tree leaves to have enough but got a nice cover over it with clear rows about two inches wide and a foot apart for the seeds. I put 250 gallons of
water on it at intervals through the day so that it all of it soaked in without any running off into the paths.
Seeds are stirred up in a mix of dry river sand and
compost, after another watering today, I'll sprinkle that in the rows and lightly tamp it down. The heat and sun are such that the surface will dry back out quickly so I'll have to keep watering until they sprout and get established but once they are two or three inches tall, they
should be able to fend for themselves pretty well and we can have carrots this fall. I'll wait a little while and do the same thing for next year's seed patch.
That has worked pretty good for carrots, I wouldn't even consider it with peas.