Posted: 10/10/2014 at 22:51
Ian, I put a layer of stones or clay pebbles in the bottom of my grow bags to help drain the heavy rain away. If you have another one, you could put stones in the bottom and transfer them over. Or even slide a fistful down the sides to the bottom, mainly over the holes so the water can get out, without the soil clumping and clogging the hole.
My onions are seedlings just now, in a raised bed. The soil is wet through and has been for days. They're standing upright still, despite the heavy winds as well as rain. If those are anything to go by, we'll be fine I reckon.