Hey everyone! I recently set up a 4x4 raised bed made of corrugated metal that's elevated off the ground. While watering, I noticed the water drains out from the sides, which my son collects in containers. I started with dry bags of 'Back to the Roots' soil and soaked it thoroughly before planting. But now, even after a couple of weeks without watering, the soil remains soaked, and most of my plants aren't growing past their seedling stage. I've seen some yellowing leaves on the bean plants, and I've also had a gnats problem which I've read is common with this soil. I aerated the soil a bit to help it dry and ordered beneficial nematodes to tackle the gnats. My kids are really let down as this is their first garden. I'd love any advice you experienced gardeners might have! Thanks!
1 Answer
It sounds like your metal raised bed is creating a bog situation! Metal doesn't allow for proper air circulation like wood does, and it keeps the soil way too wet. I recommend drilling additional drainage holes, especially in the corners where water tends to collect. Mixing in perlite or coarse sand can really help with drainage as well. Until the top few inches dry out, let go of watering completely. The presence of fungus gnats indicates that your soil is too moist. Fixing the drainage will be essential because your plants are likely drowning; their roots can't breathe. Gardening in the PNW ultimately requires more focus on drainage, especially compared to hotter, drier regions. Enjoy your gardening journey!
Thanks for the tips! I've gardened in hot, dry SoCal before, so I understand the struggle. I’ll definitely tackle the drainage issue first before introducing the nematodes since they might require damp conditions. Hopefully, we’ll have better luck with the garden next year!