6 When To Make Second Cutting Hay That Old Farmers Swear By

The first cutting of hay is in the barn, and the field is greening up again under the summer sun. Now comes the real test of a farmer’s timing: deciding when to take that second cut. Get it right, and you’ll have high-protein feed that keeps your animals thriving through winter; get it wrong, and you’re left with stemmy, low-value forage or a weakened field for next year.

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The Value of a High-Quality Second Hay Crop

Your first cutting is all about bulk. It’s often the heaviest yield, but it can also be coarse and full of last year’s growth, making it better suited for animals with lower nutritional needs. The second cutting, however, is where the quality is.

This mid-summer growth is typically finer, leafier, and packed with more protein and energy. Because the plants are growing in the full heat of summer, they mature faster, meaning you have a shorter window to capture them at their nutritional peak. For animals like dairy goats, sheep, or young, growing livestock, this high-quality second crop isn’t a luxury—it’s the fuel they need to get through the cold months in top condition.

Think of it this way: the first cut fills the barn, but the second cut fills your animals. A well-timed second cutting can reduce your reliance on expensive grain supplements over the winter. It’s the difference between feed that just maintains condition and feed that actively nourishes.

Judging by Legume Bloom and Grass Head Stage

Forget the calendar for a moment and look at the plants themselves. Your hayfield will tell you exactly when it’s approaching the sweet spot for a second cutting. The old wisdom is simple and effective because it’s tied directly to the plant’s life cycle and nutritional value.

For legumes like alfalfa or clover, the target is the early-to-mid bloom stage. When about 10-50% of the plants are showing flowers, you’ve hit the ideal balance of protein content and yield. If you wait for full bloom, you’ll get more tonnage, but the protein levels will have already started to drop as the plant puts its energy into making seeds instead of leaves.

For grasses like orchardgrass or timothy, the indicator is the seed head. The goal is to cut just before or right as the seed heads emerge from the boot—the upper leaf sheath. Once those heads are fully out and dropping pollen, the plant’s energy has shifted, and the stems rapidly become less digestible. Cutting at the boot stage captures the grass at its peak of palatability and nutritional value.

This is the fundamental tradeoff in haymaking: yield versus quality. Waiting another week might give you 15% more hay, but it could cost you 25% of its feed value. For a small farm, quality almost always wins.

Securing a Solid Dry Weather Forecast First

The most perfectly timed cut is worthless if it gets rained on. Before you even think about hooking up the mower, you need to become a student of the weather forecast, looking for a solid "haymaking window" of at least three, preferably four, consecutive dry days.

Here’s what that window needs to accomplish:

• Day 1: Cutting. You need a dry day to mow the hay and let it wilt in the sun.
• Day 2: Tedding/Raking. The hay needs to be fluffed or turned to expose the damp underside to air and sun.
• Day 3: Raking & Baling. On the final day, you’ll rake it into windrows in the morning once the dew is off and hope to bale it in the afternoon when it’s dry, but before the evening dampness sets in.

Rain at any point in this process is a disaster. Wet hay loses nutrients, leaches color, and worst of all, can harbor mold that is dangerous for livestock. A surprise shower on cut hay forces you to leave it in the field longer, risking further degradation with every passing day. Never cut hay based on plant maturity alone if the forecast is questionable. It’s better to cut a week late and get dry hay in the barn than to cut on the "perfect" day and lose the whole crop to mold.

Allowing for 4 to 6 Weeks of Field Regrowth

Patience after the first cut is a virtue that pays dividends. Mowing puts a tremendous amount of stress on hay plants, and they need time to recover their energy reserves before you ask them to produce again. The general rule is to allow for 30 to 45 days, or about 4 to 6 weeks, between cuttings.

This rest period allows the plants’ root systems to recharge. Immediately after being cut, the plant draws on energy stored in its roots and crown to push out new leaves. If you cut again too soon, you’re tapping into a depleted battery, which weakens the stand, encourages weed growth, and leads to a lighter second crop. You might even kill off some of the more desirable plants over time.

Of course, this isn’t a rigid rule. A field with good fertility and timely summer rains might be ready in 30 days. In a dry spell, it might need the full 6 weeks or even longer to put on enough growth to be worth cutting. Walk your fields and see how vigorous the regrowth is; a healthy, dense stand is your best indicator that the plants are ready for another harvest.

Cutting Before Stems Get Too Coarse and Woody

Beyond just looking at blooms and seed heads, use your hands. Walk into the field, grab a handful of alfalfa or orchardgrass, and feel the stems. Are they soft and pliable, or are they starting to get stiff, thick, and woody?

As a plant matures, it produces more lignin, a structural compound that makes stems rigid. Lignin is almost completely indigestible to livestock. The higher the lignin content, the lower the nutritional value of the hay, no matter what a feed test might say about crude protein. Animals will often refuse to eat coarse, woody stems, picking out the leaves and leaving the rest as waste. That’s a bale of hay you worked hard to make that is now just expensive bedding.

This is particularly important for animals with high nutritional demands. A dairy goat can’t get enough energy from woody hay to produce milk, and a young lamb won’t grow properly on it. Aim to cut while the stems are still tender. Bending a stem should feel like bending a thick blade of grass, not snapping a small twig.

Beating the First Fall Frost for a Final Cut

As summer wanes, your haymaking timeline gets a new deadline: the first fall frost. You need to plan your final cutting of the season—whether it’s your second or a lighter third—with the average first frost date for your area firmly in mind.

A light frost might not do much damage, but a hard freeze (below 28°F or -2°C) will damage the plant tissues, causing the forage to wilt and rapidly lose nutrients. Hay that has been through a hard freeze is much harder to dry properly and will be of significantly lower quality. It’s always better to cut a few days early than to risk losing the crop to a cold snap.

Check your local agricultural extension or old farm almanacs for your region’s average first frost date. Plan to have your last cutting mowed at least a week before that date. This gives you a buffer for weather delays and ensures you can get the hay baled and stored before the cold damages it.

Leaving Enough Growth for Winter Dormancy

The single biggest mistake you can make with a late-season cutting is taking too much. A hayfield needs to go into winter with a protective layer of stubble, ideally 4 to 6 inches of regrowth, to insulate the plant crowns and soil. This "winter coat" is critical for the long-term health of your stand.

This residual growth helps in several ways:

• It protects the plant crowns—the sensitive growth point at the base of the plant—from extreme cold and freeze-thaw cycles.
• It traps snow, which provides excellent insulation and moisture for the spring.
• It ensures the plant has enough leaf area to photosynthesize and build up root reserves before going fully dormant.

Cutting too low and too late in the season is called "scalping the field." It leaves the plants vulnerable to winterkill and significantly reduces the vigor and yield of your first cutting next year. Don’t sacrifice the future of your hayfield for a few extra bales in the fall. If you’re pushing up against the frost date, it’s often wiser to just leave the field alone and let it prepare for winter.

Balancing Yield, Quality, and Long-Term Health

Ultimately, deciding when to make that second cutting isn’t about following one rule. It’s a constant balancing act between three competing priorities: maximizing your yield, capturing peak nutritional quality, and preserving the long-term health of your field.

Imagine this scenario: Your alfalfa is at 20% bloom—perfect for quality. But the five-day forecast shows a 40% chance of thunderstorms on day three. Do you cut now and risk the rain, hoping for the best? Or do you wait five days for a clear weather window, knowing the plants will be past their prime and the hay will be lower in protein? There is no single right answer.

An experienced farmer weighs all the factors. They look at the plant’s maturity, check the long-range forecast, consider how much time is left before frost, and think about how much abuse the stand can take. The decision you make depends on your specific needs—do you need more tonnage, or is premium quality non-negotiable? Making the right call comes from knowing your land, your animals, and your tolerance for risk.

Timing the second cut is more art than science, guided by careful observation and a healthy respect for Mother Nature. It’s about looking at the plants, the sky, and the calendar all at once. Master this timing, and you’ll be rewarded not just with a barn full of high-quality winter feed, but with a healthy, productive hayfield for years to come.