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Soybeans are ready to pick when the pods have turned a dry, tan or brown color and the beans inside rattle loosely when shaken.
This is the classic sign of full maturity, but the exact timing depends on what you plan to do with your soybean harvest.
If you’ve been growing edamame and wondering when are soybeans ready to pick for fresh eating, that’s a completely different answer than when you want dried beans for storage.
Knowing when are soybeans ready to pick means checking the plants regularly during late summer and early fall.
In this post, we’ll walk through the key visual cues, the best harvest windows for different uses, and a few simple tricks to test if your soybeans are truly ready to pick.
Let’s dig into the soybean patch and get your timing just right.
When Are Soybeans Ready To Pick: The Main Harvest Windows
When are soybeans ready to pick really comes down to two primary harvest stages.
The first is the green stage for edamame, where you pick the pods while they’re plump and bright green.
The second is the dry stage for field soybeans, where you wait for the plant to completely mature and the beans to harden.
Here’s how to nail the timing for both scenarios.
1. Picking Edamame At The Green Stage
If you’re growing soybeans to eat fresh as edamame, the plants tell you when are soybeans ready to pick by pod fullness.
Gently squeeze a pod near the bottom of the stem, and if it feels plump and the beans inside are touching, it’s prime time.
The pods should still be a vibrant green with no yellowing or browning on the outer shell.
You can also peel one open and look at the beans, they should be bright green, smooth, and about the size of a large pea.
When are soybeans ready to pick for edamame usually falls about 80 to 100 days after planting, depending on your variety.
Don’t wait too long, because once the pods start turning yellow, the beans become starchy and lose that sweet, buttery flavor.
2. Waiting For The Dry Mature Stage
For dried soybeans used in soups, roasting, or even planting next season, when are soybeans ready to pick is a whole different ballgame.
You’re waiting for the entire plant to senesce, meaning the leaves drop off and the stems turn brown and brittle.
The pods themselves will change from green to a light tan, yellowish-brown, or even grayish color.
When are soybeans ready to pick at this stage? It’s typically 100 to 130 days after planting for most varieties.
Shake a pod near your ear, if you hear the beans rattling around inside, that’s a solid indicator they’ve dried down sufficiently.
Another test is to bite into a raw bean, if it’s hard enough to crack your tooth, it’s ready.
Testing Pod And Bean Maturity For Perfect Timing
Sometimes the calendar isn’t enough, so you need hands-on checks to determine when are soybeans ready to pick.
Start by looking at the lowest pods on the plant, as they mature first and give you the earliest signal.
If the lowest pods are dry and brown while the upper ones are still yellow-green, you have a split maturity situation.
In that case, you can pick the plant in stages, harvesting the dry pods first and letting the upper ones catch up.
1. The Pod Color Test
When are soybeans ready to pick for dry harvest? Check that pod color has fully changed.
Any hint of green on the pod means the bean inside is still too moist and won’t store well.
Pick a few sample pods from different parts of the plant and compare their colors.
Uniform tan or brown pods across the plant signal that the whole soybean crop is ready to pick.
2. The Bean Firmness Squeeze
For green edamame, the squeeze test is your best friend.
When are soybeans ready to pick for fresh eating? Press a pod between your thumb and forefinger.
If you can feel the individual beans creating distinct bumps, they’re ready to pick immediately.
If the pod feels flat or the beans are barely visible, give them another 5 to 7 days.
Remember, soybeans can go from perfectly plump to overly mature in just a few hot days.
So check your plants every two or three days once you see pods forming.
Factors That Affect When Are Soybeans Ready To Pick
Your specific growing conditions often speed up or delay that harvest date.
Here’s what influences when are soybeans ready to pick in your garden.
1. Weather and Temperature Swings
Hot, dry weather accelerates pod drying, meaning your soybeans will be ready to pick earlier than expected.
Cool, wet autumns slow down the drying process, so you might wait an extra week or two.
Frost can also damage immature pods, so if a hard freeze is coming, pick whatever you have regardless of maturity.
2. Planting Date and Variety Selection
Early planted soybeans obviously reach maturity sooner than late plantings.
Choose short-season soybean varieties if you live in a cooler climate or want an earlier harvest.
Check your seed packet for days to maturity, that number gives you a rough estimate of when are soybeans ready to pick.
But always trust your eyes over the calendar, as microclimates can shift things by a week or more.
How To Harvest Soybeans Once They’re Ready To Pick
Once you’ve confirmed when are soybeans ready to pick, you need the right technique for each stage.
1. Harvesting Green Edamame
Pull or cut the entire plant from the ground, then strip the pods off by hand.
Alternatively, you can pick individual pods directly off the plant while it’s still growing.
Just be gentle so you don’t snap the branches and ruin future pod development.
Rinse the pods and blanch them in boiling salted water for 3 to 5 minutes before serving.
2. Harvesting Dry Soybeans
For dry beans, cut the whole plant at the base and hang it upside down in a dry, airy place.
A garage, shed, or covered porch works perfectly for this.
Leave the plants hanging for one to two weeks to allow any residual moisture to escape.
Once the pods are brittle and crack easily, thresh the beans by crushing the pods in a bag or with your hands.
Winnow away the chaff, and store the dry beans in an airtight container in a cool, dark spot.
So, When Are Soybeans Ready To Pick?
When are soybeans ready to pick depends entirely on whether you want fresh edamame or dried beans.
Soybeans are ready to pick for edamame when the pods are plump, green, and filled out with bright beans.
Soybeans are ready to pick for dry storage when the pods have turned tan or brown and the beans rattle inside.
The best method is to start checking your plants around 80 days after planting.
Use the visual and touch tests we covered, and you’ll harvest at peak quality every single time.
Now you know exactly what to look for, so get out there and enjoy your homegrown soybean harvest.