I grow Wrinkled Crinkled Cress which is sown 2-4" apart early spring to early fall. Begin harvest in 10 days when 2" tall. Sow every 2 wks for a steady supply all season.
I understand Upland Cress is slower growing and grows well outdoors while the others do well indoors and out. Upland Cress should be sown mid-spring and onwards with soil kept moist for germination and thinned to 4-6" apart. PIck individual leaves or clip full rosettes at the root.

Thank you quiltbea you have answered my question.