Storing Peat Moss Long-Term: Keep It Dry

Peat Moss Storage Rules

Dry peat moss lasts indefinitely. Decomposition only begins when wet. Your bale (stored under a shed, with a 6-inch hole) will remain usable if you:

• Tape the hole or cover the entire bale with a tarp.
• Prevent any water intrusion from rain, ground moisture, or humidity.
• Keep it off the ground on pallets or shelves if possible.

When to Worry

If peat gets wet and stays wet, it breaks down, becomes compacted, loses acidity, and may develop unwanted microbes. Once decomposition starts, it's not reversible.

Simple fix: seal the bag. Your peat will be fine for years.