I always thought wild lambs quarters was just there waiting to happen when you make a garden. I just finished cutting the rest of mine and shaking seed everywhere otherwise I would be happy to share. and the same with my pink centered more domestic variety called "gossip weed" for obvious reasons....it pops up everywhere and is easy to spot butnot as flavorful as the wild variety. My wild lambs quarters becomes a huge plant because I am pinching growing tips all summer to eat but I imagine you mean giant leaves.
"We're all just walking each other home." -Ram Dass
"Be a lamp, or a lifeboat, or a ladder."-Rumi
"In the garden of gentle sanity, May you be bombarded by coconuts of wakefulness.” ~ Chogyam Trungpa