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What happens when straw gets wet?

Author

Noah Mitchell

Published Jan 21, 2026

Damp straw, stored indoors can develop white moulds binding the bale together and making it impossible to spread out.

How do you dry a wet straw?

Cut the bales and fluff them, offering each bit of hay excellent air circulation. Keep the wet hay in a dry area, where the water can evaporate quickly. Turn the bale two or three times per day to keep the evaporation moving along quickly.

What can you do with wet straw?

Use the straw in your garden as mulch. Use it to plant potatoes. Use it to make compost, especially if you have chickens. In fact, use it as chicken bedding or other animal bedding.

Can you bale straw in the rain?

All bales should be stored,but rounds will turn more rain in the field than squares. If they sit in the field for a few days after a rain they are perfectly fine.

What is difference between straw and hay?

Hay is a crop that is grown and harvested as a feed crop for cattle, horses and other farm animals. Straw on the other hand is a byproduct of a grain crop; in our area it's usually usually wheat straw that we see.

32 related questions found

Is straw dried out hay?

Straw is dried out and works well for building nests and providing cushioning for animals to sleep in. It is not moist like hay and is unlikely to mold. Straw is also more practical to use as bedding than hay is, because of its lower cost.

Is straw Hollow?

But when the seed heads are removed, the plant stalk that's left behind is straw, a hollow tube that has many uses, including animal bedding on farms and mulch in gardens.

Does straw hold moisture?

When used in the garden or for paths nearby to plants, it helps to retain soil moisture while also allowing water through to irrigate plants whose roots may run close to or under your straw aisles.

Will wet hay catch fire?

“Excessive moisture is the most common cause of hay fires,” Schroeder says.” Odd as it might seem, wet hay is more likely to lead to a spontaneous-combustion fire than dry hay.” High-moisture haystacks and bales can catch on fire because they have chemical reactions that build heat.

How wet can you bale wheat straw?

Decreasing the Risk of Fire. The best way to reduce the risk of a hay fire is to bale hay at a moisture content of 20% or less because at this moisture level, microbial activity decreases.

Is wet hay good for horses?

Why soak hay? Soaking hay in water is a common way to care for horses diagnosed with one of the following. Soaking hay for 15 to 60 minutes in water reduces water soluble carbohydrates (WSC), potassium (K) and dust.

How do you dry straw bales?

The bales are automatically moved one by one into the drying section to be dried by warm air blowing into the bale. The warm air picks up the moisture in the straw through the passage of the bale and escapes though the surface of the bale. The dried bale moves to a push station, pushing the bales sideward to the floor.

Is wet hay bad for cows?

Mixing moldy hay with other feedstuffs can dilute problems sometimes, but be careful that you don't make your animals sick by tricking them into eating bad hay that they normally would refuse. Hay baled too wet also is susceptible to heat damage, also called enzymatic browning.

What happens if hay bales get wet?

The first thing to keep in mind when dealing with wet hay is that moisture can easily lead to combustion. Twenty percent moisture is about the highest level that bales should reach. Above this, microbes begin to break down plant matter and mold growth occurs.

Can horses eat hay that has been rained on?

Rained-on hay can be a suitable forage, especially for horses prone to laminitis. Forage quality tends to be retained if: The rain occurs soon after cutting when the forage has had little time to dry.

Is straw flammable?

It may seem like a house insulated with straw poses a significant fire hazard. Yes, loose straw is indeed highly flammable.

Can straw self combust?

Breadcrumb Menu. Usually, we think of water and moisture as a way to put a fire out, but the opposite is true with hay and straw, which when too wet can heat and spontaneously combust.

How long does it take for wet hay to catch fire?

Most hay fires occur within 6-weeks of baling. Heating occurs in all hay above 15% moisture, but generally peaks at 125 to 130 degrees F within three to seven days with a minimal risk of combustion or forage quality loss.

How long does straw last?

Straw is slow to break down, and Joel has found they tend to last for two growing seasons. Hay bales are used to feed livestock. The grass crop – like alfalfa, fescue, or clover – is grown specifically to be dried and baled as a food source, so hay is more expensive.

Does straw attract mice?

Straw has nothing edible to attract mice but hay has grass seeds that provide good winter provender for mice families. Straw bales stacked for supporting walls and structures have no holes in which mice can tunnel and no spaces in which to build nests, but hay bales stacked in a barn have many.

How long does it take straw to decompose?

The Lemhi straw in the bags decomposed 40% in 3 months. The University of Idaho No. 59- 10320 straw decomposed 49% in 3 months.

Is straw cheaper than hay?

Is straw or hay cheaper? Straw is way cheaper than hay. The average straw bale only costs under $3 while the hay bale starts at $7 and above.

Why is my straw sprouting?

Seed of grain in bales of straw can be a result of it not being harvested properly. Or perhaps the grain head on the harvest machine was not set right. Another reason can be the use of older combines that leave grain in the field that are then picked up by the baler (machine) collecting the straw.

Do chickens like hay or straw?

While not common, providing chickens a bale of straw or hay can be a good thing. It's an inexpensive way to provide food and a little entertainment to these animals. A bale in a chicken run gives birds the opportunity to search for a variety of tasty treats.

Is straw hay good for horses?

While straw is not as nutritious as hay, it is safe for horses to eat and can be a source of beneficial roughage. In contrast, the horses on wood shavings paused less frequently while consuming their hay meal and did not have anything to eat once finished.