I read in a seed
catalog that mache (lamb's lettuce) can be grown in seed
flats. That is the entire growth period they're grown in the flats, from sowing the seed
until it's ready to be harvested. That is they wouldn't be transplanted to another container.
Would this really work or are seed
flats too shallow? If so, do you need to drill holes in the bottom of the flats for irrigation?
When I say growing
mache in flats, I'm talking about harvesting it when it's fully mature, NOT growing
it for a micro green.