Yes my land cress this year is very dubious, old seed from last year and new seed from this year both
Just a few weak seedlings emerging from a thick sowing in a tray, not helped by pricking out into an recent abysmal (the worst yet) batch of new horizons which has grown a few trays of tiny yellow seedlings! So I have had to plant out really small plants, luckily once out in the ground they perk up quickly and then growth has been good…
Pricking out and sowing into my own compost now and difference is amazing! Albeit with a lot of summer purslane seedlings 
Anyway, this land cress and also my chervil non happenings have resolved me to also save some seed in the spring and thereafter when i can, obviously a message from the plant world