Yes, you can use toilet paper rolls to start seeds with great results. The tall, narrow shape suits crops with long taproots. The cardboard breaks down in the soil after transplant. You get free biodegradable seed pots with no plastic waste.
I use rolls for my peas, beans, and sunflowers every spring. These plants send roots down fast in the first week. A short plastic cell makes them coil and tangle. The tall cardboard tube lets roots grow straight down the way they want.
The technical trick is the 3 to 4 week window. Cardboard rolls hold soil and moisture for about a month before they start to soften. By that point your seedlings stand 4 to 6 inches tall and are ready for the garden.
At transplant time, you drop the whole tube right in the planting hole. No need to pull the plant out and risk root damage. The cardboard breaks down in 6 to 8 weeks as worms and fungi feed on it underground.
I tried this method for the first time with a row of sugar snap peas. The seedlings I started in toilet paper rolls grew taller and gave fruit a full week before the ones in plastic cells next to them.
Peas and Beans
- Why they fit: Both crops form long taproots in the first 7 to 10 days and hate any kind of root tangle.
- Sow depth: Drop 2 seeds per tube at 1 inch deep, then thin to the strongest sprout after a week.
- Transplant time: Move to the garden once the first set of true leaves shows, around 3 weeks from sowing.
Sweet Corn
- Why it fits: Corn pushes roots straight down fast. The narrow tube guides root growth and avoids transplant shock.
- Sow depth: Plant 1 seed per tube at 1.5 inches deep in a sterile seed start mix.
- Bonus tip: Start corn just 2 weeks before transplant since it grows fast in warm soil.
Sunflowers
- Why they fit: Sunflowers grow a long taproot and dislike any root disturbance during their fast early weeks.
- Sow depth: Push 1 large seed into each tube at half an inch deep and water in light.
- Result: Plants set out in tubes bloom 5 to 7 days earlier than direct sown plants in cool springs.
Squash and Cucumbers
- Why they fit: Cucurbits hate root disturbance more than most crops. The tube goes straight in the hole at transplant.
- Sow depth: Place 1 seed per tube on its side at 1 inch deep to mimic how the plants prefer to start.
- Timing: Start tubes just 3 weeks before you plan to set the plants in warm garden soil.
Setting up for DIY seed starting with rolls takes just a few minutes. Cut each toilet paper roll in half to make 2 short tubes about 2 inches tall. Make 4 short cuts at one end, then fold the flaps inward to form a closed bottom.
Stand the tubes upright in a plastic tray with a 1-inch lip. Pack them in tight against each other so they hold each other up and stay closed at the bottom. Fill each tube with damp seed start mix to the top edge.
Bottom water your tubes once or twice a week. Pour half an inch of water in the tray and let the cardboard wick it up. Top watering soaks the rolls too fast and breaks them down before transplant day.
Track your tubes and move plants out as soon as the cardboard feels soft. A free roll on the trash makes a perfect first-time pot. You save money, cut waste, and give your seedlings the best root start at the same time.
Read the full article: Starting Seeds Indoors: 10 Steps for Success
