Raised beds are forgiving in year one almost by accident: fresh bagged soil is loose, nutrient-rich, and drains well no matter how the bed was built. The mistakes that matter don’t show up until year two, once that starter soil has settled and broken down.
The most common one is building beds without any thought to what replaces the soil that compacts and washes down over a season.
The second issue is depth mismatched to what’s actually being grown.
A bed built for the hardest thing you’ll grow in it handles the easy things without any adjustment.
The fix that actually holds up long-term: plan a yearly top-up of two to three inches of compost as routine maintenance, and match bed depth to your highest-demand crop.
None of this shows up on the seed packet, because it isn’t thinking about what your soil looks like eighteen months from now.