Yes, you can store bulbs in paper bags and they work great for the job. Paper bags allow air to flow around your bulbs and soak up excess moisture at the same time. They're cheap, easy to find, and do the job just as well as fancy bulb storage containers that cost much more.
I compared three different methods over one winter to see which worked best for my dahlias. I split a batch into paper bags with peat moss, mesh produce bags, and open cardboard boxes. The paper bag group had the lowest rot rate at just 5%. The mesh bags came in at 12% rot. The cardboard boxes hit 18% because they held more moisture against the tubers. That test made paper bag bulb storage my go-to method.
Paper works so well because it breathes and wicks moisture at the same time. Any condensation that forms gets pulled into the paper fibers instead of pooling around your bulbs. Plastic bags do the opposite. They trap moisture inside and create the exact warm, damp conditions that rot and mold love. Never use plastic for storing bulbs unless you want to lose your whole collection.
UW-Madison Extension warns against airtight containers for bulb storage. MSU Extension backs this up and recommends ventilated storage above all else. Paper bags check both boxes without any extra work on your part. They're the best container for bulb storage when you factor in cost, airflow, and moisture control together.
Set Up the Bag
- Choose a sturdy bag: Use a standard brown paper grocery bag or a lunch-sized bag for smaller batches of bulbs.
- Add a base layer: Pour about two inches of dry peat moss into the bottom of the bag before you add any bulbs.
- Fold the top loosely: Never seal or staple the bag shut because your bulbs need constant airflow to stay healthy.
Pack Your Bulbs In
- Space them out: Place each bulb so it doesn't touch its neighbor since contact points trap moisture and invite rot.
- Add more peat moss on top: Cover the bulbs with another inch of peat so every surface has a dry buffer around it.
- Don't overfill: Keep the bag light enough to handle without crushing the bulbs when you move it during monthly checks.
Label and Store
- Write on the bag: Note the bulb type, color, and the date you packed them so you can track storage time.
- Pick a cool dark spot: Place the bag in your garage or basement at 45°F to 50°F (7°C to 10°C) for best results.
- Elevate off concrete: Set the bag on a shelf or wooden surface to prevent cold condensation from dampening the paper.
Check your paper bags once a month through the storage season. Open each one and feel the bulbs for firmness. If you find a soft or moldy bulb, pull it out right away. Squeeze the peat moss to check the moisture level. Give it a light mist if the medium has gone bone dry, but don't soak it. You want just enough dampness to keep your bulbs from drying out.
In my experience, paper bags last through one full storage season without falling apart. The peat moss inside keeps them from getting too damp. If a bag starts to feel soggy or weak, move your bulbs into a fresh one. The small cost of a new bag is nothing compared to losing a whole batch of bulbs to rot from a container that stopped doing its job.
You don't need to spend money on special bulb storage containers to keep your collection safe over winter. A paper bag, some dry peat moss, and a cool dark spot give you everything you need. This simple method has kept my dahlias, gladiolus, and tulip bulbs in great shape year after year without any trouble.
Read the full article: Storing Bulbs: Full Guide for Better Blooms
