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The best time to plant a second crop of beans is in mid-to-late summer, typically 8 to 10 weeks before your first expected fall frost.
This timing allows the beans to mature in the warm soil of late summer while finishing their pod production before the chilly nights of autumn arrive.
If you’ve been wondering when to plant second crop of beans in your specific growing zone, the answer really comes down to counting backward from that frost date.
Planting a second crop of beans is a fantastic way to extend your harvest well into the cooler months, and it’s easier than you might think.
In this post, we’ll cover the exact timing for when to plant second crop of beans, the best bean varieties for a fall harvest, and a few simple tips to guarantee success.
Let’s dig into the details so you can enjoy fresh beans long after your spring planting has faded.
When To Plant Second Crop of Beans: The Exact Timing
When to plant second crop of beans really hinges on your local climate and the days-to-maturity of the bean variety you choose.
The general rule is to aim for a planting date that gives your beans enough warm days to sprout and grow, but not so many that they’re still setting pods when frost hits.
Here’s how to nail the timing for your second crop of beans:
1. Count Backward From Your First Fall Frost
The most reliable way to figure out when to plant second crop of beans is to find your average first frost date for your area.
Once you know that date, count backward the number of days your bean variety needs to mature, then add about 14 days as a buffer for slower growth in cooler late-summer soil.
For example, if your beans take 60 days to mature and your first frost is October 15th, you’ll want to plant your second crop of beans around August 1st.
This buffer ensures your beans have enough time to fully develop even if the weather turns cooler than expected.
2. Aim For Soil Temperatures Above 60°F
Beans are warm-season crops, so your second crop of beans needs soil that’s still warm enough to germinate quickly.
If the soil is below 60°F, bean seeds will rot in the ground instead of sprouting, so you’ll want to check that your late-summer soil is still toasty.
In most regions, this means planting your second crop of beans in July or early August, well before the soil starts to cool down in September.
You can use a simple soil thermometer to confirm the temperature is right before you sow those seeds.
3. Choose Fast-Maturing Varieties For The Second Crop
When you plant a second crop of beans, you’ll want to pick varieties with shorter days-to-maturity, usually 50 to 60 days.
Bush beans are perfect for a second planting because they produce all their pods at once and mature faster than pole beans.
Varieties like Provider, Contender, or Yellow Wax are excellent choices for your second crop of beans since they’re known for quick harvests.
Pole beans can work too, but they take longer, so you’ll need to plant them even earlier in the summer to beat the frost.
Why You Should Plant A Second Crop Of Beans
Planting a second crop of beans isn’t just about getting more food, it’s about making the most of your garden space all season long.
Your spring beans are done by mid-summer, and that empty patch of soil is prime real estate for a fresh round of growth.
Here’s why adding that second crop of beans is such a smart move:
1. Extended Harvest Means More Fresh Produce
A second crop of beans gives you a whole new wave of fresh pods just when your summer harvests are slowing down.
Instead of buying beans at the store in September, you’ll be picking them straight from your garden.
And since fall beans often have a sweeter, more tender flavor due to cooler nights, you’ll really taste the difference.
2. It’s A Great Way To Use Late-Summer Garden Space
After you pull up your spring beans, the soil is still full of nutrients and ready for another planting.
Sowing a second crop of beans means you’re not letting that valuable space sit idle for months.
Plus, beans are nitrogen-fixers, so they actually improve the soil for whatever you plant there next spring.
3. Fall Beans Face Fewer Pest Problems
Many common bean pests, like Mexican bean beetles, are most active in the heat of mid-summer.
When you plant a second crop of beans in late summer, you’ll often deal with fewer pest pressures.
The cooler weather also means less stress on the plants, so they can focus on producing pods instead of fighting off bugs.
Tips To Help Your Second Crop Of Beans Thrive
Getting the timing right for when to plant second crop of beans is half the battle, but you also need to give those seeds a good start.
Late-summer planting comes with its own challenges like heat and dry soil, so here are a few tips to keep your second crop of beans healthy:
1. Water Deeply Right After Planting
Late-summer soil can be bone dry, so water your second crop of beans thoroughly right after sowing.
Give the seeds a good soak to help them germinate, then keep the soil consistently moist until the seedlings emerge.
Once the plants are up, water deeply once or twice a week rather than giving them little sips every day.
2. Add A Layer Of Mulch To Keep Soil Cool
Even though you want warm soil for germination, once your second crop of beans sprouts, the late-summer sun can be scorching.
A layer of straw or shredded leaves around your bean plants will keep the soil cool and retain moisture.
Mulch also helps suppress weeds that love to compete with young bean seedlings for water and nutrients.
3. Watch The Weather For Early Frosts
If an unexpected early frost threatens your second crop of beans, be ready to cover them with a row cover or old bedsheet overnight.
Most beans can handle a light frost if they’re protected, but a hard freeze will kill them quickly.
Keeping an eye on the forecast in the weeks before your expected frost date can save your whole fall harvest.
So, When Should You Plant Your Second Crop Of Beans?
You should plant your second crop of beans in mid-to-late summer, about 8-10 weeks before your first expected fall frost.
The exact date for when to plant second crop of beans depends on your local climate and the days-to-maturity of your chosen variety.
Count backward from your frost date, add a two-week buffer, and make sure the soil is still warm enough for germination.
By planting a second crop of beans, you’ll extend your harvest, use your garden space wisely, and enjoy delicious fall beans.
So get out there in late July or early August, sow those seeds, and look forward to a bountiful second harvest.
Your taste buds will thank you.