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The best time to plant potatoes in West Tennessee is in early spring, typically from mid-February through mid-March.
This window lets you get your seed potatoes in the ground as soon as the soil is workable and the danger of a hard freeze has mostly passed.
Potatoes are a cool-season crop, so they thrive in the mild temperatures that West Tennessee offers during these late winter and early spring weeks.
If you’re wondering when to plant potatoes in West Tennessee for a fall harvest, you can also do a second planting in late July or early August.
In this post, we’ll break down the exact timing for when to plant potatoes in West Tennessee, how to adjust for your specific zone, and tips for a bumper crop.
Let’s dig into the details so you can get those spuds in the ground at just the right moment.
When To Plant Potatoes In West Tennessee: The Spring Window
The key to knowing when to plant potatoes in West Tennessee is understanding your local frost dates and soil temperatures.
Most of West Tennessee falls into USDA hardiness zones 7a and 7b, which means you have a longer growing season than northern states.
For the spring crop, you want to plant potatoes about two to three weeks before the last expected frost date.
In West Tennessee, the last frost typically occurs between late March and early April, so planting in late February or early March is your sweet spot.
Soil temperature also matters because potato tubers need the ground to be at least 45°F to start sprouting.
If the soil is too cold and wet, your seed potatoes may rot before they ever send up a shoot.
So, when to plant potatoes in West Tennessee really comes down to checking the soil, not just the calendar.
1. Soil Temperature Is Your Best Guide
Instead of guessing, grab a soil thermometer and check the ground at a depth of about four inches.
When the soil reads a consistent 45-50°F, that’s the perfect signal for when to plant potatoes in West Tennessee.
This usually happens in mid-February in the southern parts of the region, like Memphis, and a bit later in the northern counties.
A simple trick is to squeeze a handful of soil; if it crumbles easily, it’s ready, but if it forms a muddy ball, wait a few more days.
2. The Last Frost Date Factor
Potato plants can tolerate a light frost, but a hard freeze will kill the new growth above ground.
That’s why your planting date for potatoes in West Tennessee should be timed so the sprouts emerge after the worst of the cold has passed.
Since potatoes take about two to three weeks to emerge from the soil, planting in mid-March means they’ll pop up right around the last frost date.
If a late freeze is forecast after the sprouts appear, just mound extra soil over the tops to protect them.
3. Early Varieties vs. Main Crop
When deciding when to plant potatoes in West Tennessee, also think about the variety you’re growing.
Early season potatoes like Yukon Gold or Red Norland can go in earlier, even in mid-February, because they mature in 60-80 days.
Main crop varieties like Russet or Kennebec do well with a mid-March planting, giving them plenty of time to size up before summer heat arrives.
By choosing a mix of early and main crop types, you can spread out your planting schedule and enjoy a longer harvest.
When To Plant Potatoes In West Tennessee For A Fall Crop
Many gardeners don’t realize they can get a second harvest by planting potatoes again in late summer.
For a fall crop, when to plant potatoes in West Tennessee shifts to late July through the first week of August.
This timing gives the tubers enough time to mature before the first fall frost, which usually hits in late October or early November.
The challenge with a fall planting is the heat, as soil temperatures in July can be over 80°F.
To beat the heat, store your seed potatoes in the fridge for a few weeks before planting, and water deeply right after you get them in the ground.
1. Cooling The Soil For Fall Planting
If you’re aiming for that fall harvest, you’ll need to keep the soil cool and moist after planting.
Apply a thick layer of straw or mulch, about four to six inches deep, to shade the soil and retain moisture.
This extra care helps the seed potatoes sprout even when the air temperature is sweltering.
The key for when to plant potatoes in West Tennessee in the fall is to get them in before mid-August at the latest.
2. Short-Season Varieties For Fall
Stick with fast-maturing varieties for your second planting, like Caribe or Austrian Crescent.
These types are ready in 70 days or less, which is perfect for the compressed fall growing window.
If you plant in early August, you’ll be harvesting by mid-October, just in time for cooler weather.
This fall crop is a great way to maximize your garden space and stretch your potato supply into winter.
Tips For Success After You Plant Potatoes In West Tennessee
Once you’ve nailed the timing for when to plant potatoes in West Tennessee, the next steps are all about care.
Potatoes love loose, well-drained soil with a slightly acidic pH between 5.0 and 6.0.
Before planting, work in some compost or aged manure to give your spuds a nutrient boost.
Plant your seed pieces about four inches deep and 12 inches apart, with rows spaced two to three feet apart.
As the plants grow, use the hilling method by mounding soil around the stems every few weeks.
This prevents the tubers from turning green from sun exposure and encourages more potatoes to form.
Keep the soil consistently moist, especially once the plants flower, as that’s when tubers are actively bulking up.
Using drip irrigation or a soaker hose is ideal because overhead watering can promote fungal diseases like blight.
Watch out for pests like Colorado potato beetles and wireworms, and treat them early if you see damage.
1. Watering And Mulching
Consistent moisture is non-negotiable for healthy potato development in West Tennessee’s sometimes erratic weather.
Aim for about one to two inches of water per week, and mulch heavily to keep the soil temperature stable.
Mulch also keeps the soil from crusting, which makes it easier for new shoots to push through.
2. Harvesting At The Right Time
For new potatoes, you can start harvesting about two weeks after the plants flower.
For full-sized storage potatoes, wait until the vines die back and turn yellow, usually 100-120 days after planting.
Dig them up on a dry day, let them cure in the shade for a week, and then store them in a cool, dark place.
So, When To Plant Potatoes In West Tennessee?
When to plant potatoes in West Tennessee is best answered with a simple rule of thumb: aim for mid-February to mid-March for spring, and late July to early August for fall.
You should plant potatoes in West Tennessee when the soil reaches 45°F and the risk of a hard freeze is minimal.
By following these window dates and paying attention to soil conditions, you’ll set your crop up for success.
Whether you’re a first-time gardener or a seasoned pro, sticking to these planting times will give you a solid harvest.
So mark your calendar, prep your soil, and get ready to enjoy homegrown potatoes that taste far better than anything from the store.
Happy planting, and here’s to a bountiful potato patch in West Tennessee.