Seed Tape for Carrots (No More Thinning Regret)

I have thinned more carrots than I care to admit. You sow the whole packet because the seeds are tiny and you can’t really tell how many you’re dropping, and then three weeks later you’re crouched over a row pulling out perfectly good seedlings like some kind of vegetable bouncer. Every single year.

Seed tape fixes this. And making it yourself costs almost nothing, which is the only reason I finally tried it.

Why Bother Making Your Own

You can buy pre-made seed tape at the garden center. I have seen it. I have held it. I have put it back on the shelf when I saw the price per row. Making your own takes maybe 20 minutes at the kitchen table and costs basically zero dollars if you already have toilet paper and flour in the house. Which, I’m guessing you do.

Also, you can use whatever variety you want instead of whatever three options they decided to tape up for you. That matters when you’ve got a specific carrot picked out from a seed catalog and you’ve already committed.

What You Need

• Toilet paper (single ply works best, but use what you have)
• 1 tablespoon flour mixed with enough water to make a thick paste
• A toothpick or skewer
• Your carrot seeds
• A ruler if you’re the kind of person who uses rulers (I used my thumb)

That’s genuinely it. No special equipment. The flour paste is your seed glue and it breaks down in the soil without harming anything, so don’t let anyone sell you a fancier version of this.

How to Make It

Tear off a strip of toilet paper the length of your row. I usually do them in two-foot sections because longer than that and things start getting unwieldy on the kitchen table, especially if a certain seven-year-old wanders over and wants to help.

Mix your flour paste. You want it about the consistency of thick glue, not watery, not a dough ball. A small bowl works fine. This is not a chemistry experiment.

Dip your toothpick into the paste and dab a small dot every two inches along the toilet paper. Carrot seeds want to be about two inches apart so you’re not doing any thinning later, which is the whole point of this exercise. Place one seed on each dot, press it gently so it sticks, and move on.

Let it dry flat for an hour or two. Then roll it up loosely, label it (I skipped this step once, which is how I ended up with a mystery row that turned out to be parsnips), and store it until you’re ready to plant.

Planting the Tape

Make a shallow furrow about a quarter inch deep. Lay the tape in, cover it with a thin layer of soil or seed starting mix, and water gently. The toilet paper dissolves, the seeds are already spaced, and you walk away feeling unreasonably smug.

In Redmond right now, April is actually a solid time to get carrots going. Soil temps are climbing up toward 50 degrees and carrots germinate fine anywhere from 45 to 85. They’re slow germinators no matter what you do, usually 14 to 21 days, so don’t panic when nothing happens for two weeks. They’re down there. Being carrots.

A Few Things I Learned the Hard Way

First time I did this I made the paste too thin and the seeds slid around before it dried. Half my tape looked like a connect-the-dots gone wrong. Thicker paste. It matters.

Also, single ply toilet paper breaks down faster in the soil. Two-ply can slow things down slightly. Not a disaster, but worth knowing.

One more thing: press the seed into the paste dot, don’t just set it on top. Surface tension is not your friend here. You want that seed stuck down before you roll the tape up or you’ll end up with all your seeds clumped at one end like they were trying to escape.

Is It Worth the Effort

For carrots, absolutely yes. For bigger seeds like beans or squash where spacing is easy to do by hand? Probably not worth your time. But tiny seeds that like to go everywhere and then demand thinning later, this is where seed tape earns its keep.

My daughters think making seed tape is a craft project, which means I occasionally get help whether I asked for it or not. The spacing gets a little creative when a seven-year-old is placing seeds. But honestly the carrots don’t seem to mind, and we’re all a lot more invested in how they turn out.

You can also do this with radishes, lettuce, parsnips, or anything else that makes you regret how you planted it three weeks later. Once you make your first roll, you’ll wonder why you spent years crouched over a row apologizing to seedlings you’re about to pull out.

Turnip for some properly spaced carrots this spring? Yeah, I went there.

Photo by Joanna Stołowicz on Unsplash