Never Doing the "Toilet Paper Tube" Seed-Starting Again

I saw it on Pinterest! A few weeks ago, I posted about seed-starting using toilet paper roll tubes. My initial concern turned out to be true. The cardboard is a tough medium because it absorbs moisture from the soil - and the seedlings need it. When the seed-starting tray is covered, there's no problem. When uncovered, the tubes dry out more quickly than plastic pots do. Normally, I would transfer these seedlings to bigger pots before putting them in, but this year, they'll go directly into the ground and/or pots. They've been hardening off for a few days on the covered patio, in preparation for planting later this week.