Don't know about your flax, but ours is 10cm tall now, so we're going to take off our shoes and weed the plots.
It's important not to tread on the seedlings because they don't recover well from being knocked over - hence barefoot weeding. You only need to do this once, and since the weather will be sunny from Sunday for a few days, this is a good time.
You need to remove the weeds because they compete with the flax for light, water and soil nutrients, also it's much easier to harvest without weeds in the crop.
No rain means I can also bike or bus out to the Jericho plot and take some photos. I hear that Caitlin and Sharon have been working hard sowing the flax and planting the dye/food plant seedlings grown by the Park Board, so I can't wait to see it. I'll be taking along my pruning shears to tidy up the willow spinning wheel while I'm there. I'll post pictures of the plot next time.