When To Plant Potatoes In Arkansas

If you’re planning your garden in the Natural State, knowing when to plant potatoes in Arkansas is the key to a great harvest. Getting the timing right ensures your plants grow strong before the summer heat arrives.

Potatoes are a rewarding crop for Arkansas gardeners. They need cool weather to get started but a long growing season to produce those tasty tubers. Let’s break down the best schedule for your area.

The prime planting window for potatoes across most of Arkansas is from mid-February to late March. The goal is to get them in the ground 2-4 weeks before your last expected spring frost. This gives them time to sprout and grow while the soil is still cool and moist.

Since Arkansas has three distinct climate zones, your exact dates will vary. A good rule is to plant when soil temperatures reach a consistent 45°F (7°C). You can check this with a simple soil thermometer.

Arkansas Planting Dates by Region

The state’s geography creates different growing conditions. Here’s a regional guide:

Northwest Arkansas (Zone 6b): Plant from late March to early April. Frosts linger longer here, so waiting a bit is safer.
Central Arkansas (Zone 7b): This is the main window. Aim for mid-February through mid-March. The Little Rock area fits here.
Southern Arkansas (Zone 8a): You can start earliest here, from early February to early March. The warmer soils in places like Texarkana allow for a head start.

For a fall crop, which is possible in central and southern regions, plant around early August. This requires careful variety selection and extra watering.

How to Prepare for Planting

Good preparation makes all the difference. Follow these steps to get your garden ready.

1. Choose the Right Seed Potatoes

Always use certified seed potatoes from a garden center. These are disease-free. Grocery store potatoes are often treated to prevent sprouting and can carry disease. Popular varieties for Arkansas include:

Yukon Gold: A reliable all-rounder with great flavor.
Red Pontiac: Does well in our heavier soils and stores good.
Kenebec: A high-yielding, disease-resistant choice.
Purple Majesty: Adds color and is packed with antioxidants.

2. Chitting (Pre-Sprouting)

About 2-3 weeks before planting, set your seed potatoes in a bright, cool spot. This encourages short, sturdy green sprouts. It gives them a jump on the growing season.

3. Prepare Your Soil

Potatoes need loose, well-draining soil with a slightly acidic pH (5.8 to 6.5).

Work in 3-4 inches of compost or aged manure.
Avoid fresh manure, as it can promote scab disease.
If your soil is heavy clay, consider using raised beds or hills for better drainage.

Step-by-Step Planting Guide

Now, let’s get those potatoes in the ground.

Cut and Cure: Cut larger seed potatoes into pieces, each with 1-2 eyes. Let them cure for 1-2 days so the cut surface calluses over.
Dig Trenches or Holes: Dig trenches about 6 inches deep and 3 feet apart. You can also use individual holes for a smaller patch.
Plant: Place seed pieces cut-side down, 10-12 inches apart in the row.
Cover and Fertilize: Cover with 4 inches of soil. Mix a balanced, low-nitrogen fertilizer into the soil as you cover them.
Water Lightly: Give them a gentle watering to settle the soil.

Caring for Your Potato Plants

Consistent care after planting ensures a healthy crop.

Hilling

This is the most important task. When plants are 6-8 inches tall, mound soil around the stems, leaving just the top leaves exposed. Repeat every few weeks. This protects tubers from sunlight (which turns them green and toxic) and encourages more potatoes to form.

Watering and Feeding

Potatoes need about 1-2 inches of water per week, especially once tubers start forming. Water deeply and consistently to avoid misshapen spuds. A side-dressing of fertilizer when you hill helps, but to much nitrogen leads to leafy tops and small potatoes.

Pest and Disease Watch

Keep a eye out for common issues:

Colorado Potato Beetle: Hand-pick the orange larvae and adults.
Early Blight: Causes dark spots on leaves. Use mulch to prevent soil splash and rotate crops each year.
Flea Beetles: Tiny holes in leaves. Row covers can help.

Harvesting and Storage

You can harvest “new” potatoes about 2-3 weeks after plants finish flowering. For mature, storage potatoes, wait until the plant tops turn yellow and die back completely.

Use a garden fork to carefully dig up tubers on a dry day. Let them cure on the soil surface for a few hours, then move to a dark, well-ventilated place for 1-2 weeks. This toughens the skin. Store in a cool, humid, and totally dark place like a root cellar.

Frequently Asked Questions

Can I plant potatoes from the grocery store?
It’s not recommended. They are often treated with a sprout inhibitor and may carry diseases that can stay in your soil.

What is the latest date to plant potatoes in Arkansas?
For a spring crop, late March is generally the cutoff for central AR. For a fall crop, aim for early August, choosing fast-maturing varieties.

How do I grow potatoes if I have heavy clay soil?
Use raised beds filled with loose soil mix or try the straw mulch method. Plant on top of the ground and cover with a thick layer of straw, adding more as they grow.

Why are my potato leaves turning yellow?
Late in the season, it’s normal as plants mature. If it happens early, it could be a sign of overwatering, disease, or a nutrient deficiency.

Can I save my own seed potatoes for next year?
You can, but select tubers from your healthiest plants. There is a risk of carrying over disease, so many gardeners prefer to start fresh with certified seed each year.

Following these guidelines for when to plant potatoes in Arkansas will set you up for success. Paying attention to your local frost dates and soil conditions is the best strategy. With a little preparation and timely care, you’ll be digging up a plentiful harvest of homegrown potatoes to enjoy for months to come.