Arkansas gardeners should wait until the soil is consistently warm to the touch before planting tomatoes. Knowing the best time to plant tomatoes in arkansas can mean the difference between a bumper crop and a disappointing harvest. This guide walks you through everything you need to know for successful tomato planting in the Natural State.
Tomatoes love heat, and Arkansas weather can be tricky. Spring often brings late frosts, while summer heat arrives fast. Getting the timing right helps your plants thrive without stress.
Best Time To Plant Tomatoes In Arkansas
The ideal window for planting tomatoes in Arkansas runs from mid-April to early May. This timing works for most of the state, but you need to adjust based on your specific location. Northern Arkansas, including areas like Fayetteville and the Ozarks, typically needs to wait until late April or early May. Southern regions, such as Pine Bluff and Texarkana, can sometimes plant a week or two earlier.
Soil temperature matters more than the calendar date. Tomatoes need soil temperatures of at least 60°F (15°C) at planting depth. If the soil is too cold, roots won’t develop properly, and plants may suffer from stunted growth or disease.
Check Your Local Frost Dates
Arkansas has a wide range of last frost dates. The average last frost in northern Arkansas is around April 15-20. In southern Arkansas, it’s typically March 25-April 5. Central Arkansas, including Little Rock, falls somewhere in between, around April 5-10.
To be safe, wait until at least two weeks after your area’s average last frost date. This reduces the risk of cold damage. You can find your specific frost dates through the National Weather Service or your local extension office.
Soil Temperature Guidelines
Use a soil thermometer to check temperatures. Insert it about 4 inches deep in the soil where you plan to plant. Take readings in the morning for several days in a row. Consistent readings above 60°F mean it’s safe to plant.
If you don’t have a thermometer, watch for signs like:
- Soil feels warm when you press your hand against it
- Weeds and grass are actively growing
- Nighttime temperatures stay above 50°F for a week
Regional Variations Across Arkansas
Arkansas spans USDA hardiness zones 6b in the north to 8a in the south. This means planting times can vary by several weeks depending on where you live. Here’s a breakdown by region.
Northern Arkansas (Zones 6B-7a)
In northern Arkansas, including cities like Fayetteville, Springdale, and Mountain Home, the growing season is shorter. Plant tomatoes from late April to mid-May. Use season-extending techniques like row covers or cold frames if you want to plant earlier. Choose determinate or early-maturing varieties to ensure harvest before fall frosts.
Central Arkansas (Zone 7B)
Central Arkansas, including Little Rock, Conway, and Hot Springs, has a moderate climate. Plant tomatoes from mid-April to early May. This area often has reliable warm weather by late April. You can also plant a second crop in late July for a fall harvest.
Southern Arkansas (Zone 8A)
Southern Arkansas, including El Dorado, Texarkana, and Monticello, has longer, hotter summers. Plant tomatoes from early April to mid-April. Be careful not to plant too early, as late March cold snaps can still occur. Southern gardeners often have success with both spring and fall plantings.
Preparing Your Garden For Tomatoes
Good preparation makes a huge difference in tomato success. Start working on your soil a few weeks before planting. This gives amendments time to integrate.
Soil Testing And Amendment
Test your soil pH. Tomatoes prefer a pH between 6.0 and 6.8. Arkansas soils tend to be acidic, so you may need to add lime. Your local extension office can test your soil for a small fee.
Add organic matter like compost or well-rotted manure. Work it into the top 6-8 inches of soil. This improves drainage and provides nutrients. Avoid fresh manure, which can burn roots and introduce pathogens.
Choosing The Right Location
Tomatoes need full sun, at least 6-8 hours of direct sunlight daily. Choose a spot with good air circulation to reduce disease pressure. Avoid low areas where cold air settles, which can increase frost risk.
Rotate your tomato planting location each year. Don’t plant tomatoes where you grew peppers, eggplants, or potatoes the previous season. These crops share diseases that can build up in the soil.
Selecting Tomato Varieties For Arkansas
Not all tomatoes perform well in Arkansas’s climate. Choose varieties suited to heat and humidity. Here are some top picks for the state.
Determinate Varieties (Bush Types)
Determinate tomatoes grow to a fixed size and ripen all at once. They’re great for canning and sauce. Good choices include:
- Celebrity – disease resistant and reliable
- Roma – perfect for sauces and pastes
- Bush Early Girl – produces fruit quickly
Indeterminate Varieties (Vining Types)
Indeterminate tomatoes keep growing and producing until frost. They need staking or cages. Try these:
- Better Boy – classic slicer with great flavor
- Cherokee Purple – heirloom with rich taste
- Sun Gold – sweet cherry tomato that loves heat
Heat-Tolerant Varieties
Arkansas summers can be brutal. Some tomatoes set fruit better in high heat. Consider:
- Heatmaster – bred for hot climates
- Florida 91 – sets fruit even in high temperatures
- Phoenix – handles heat and humidity well
Step-By-Step Planting Guide
Follow these steps for the best results when planting tomatoes in Arkansas.
- Harden off seedlings – If you started seeds indoors or bought transplants, acclimate them to outdoor conditions. Place them outside for a few hours each day, gradually increasing exposure over a week.
- Prepare planting holes – Dig holes about 18-24 inches apart for determinate varieties, 24-36 inches for indeterminate. Make holes deep enough to bury two-thirds of the stem.
- Add amendments – Mix a handful of compost or a balanced fertilizer into each hole. Some gardeners add a crushed eggshell or bone meal for calcium.
- Plant deep – Remove lower leaves and plant the stem deep. Tomatoes can grow roots along the buried stem, creating a stronger plant.
- Water thoroughly – Give each plant about a quart of water immediately after planting. This settles the soil and reduces transplant shock.
- Mulch around plants – Apply 2-3 inches of organic mulch like straw or shredded leaves. This conserves moisture and keeps soil temperature stable.
- Install supports – Place cages, stakes, or trellises right after planting. Doing it later can damage roots.
Common Mistakes To Avoid
Even experienced gardeners make errors with tomato planting. Here are the most common pitfalls in Arkansas.
Planting Too Early
Many gardeners get eager and plant in March. This is risky. A late frost can kill or severely damage plants. Even if frost doesn’t hit, cold soil slows growth and invites disease. Wait until soil is warm.
Planting Too Late
Planting after mid-May can lead to problems. Tomatoes need time to establish before extreme heat arrives. Late-planted tomatoes may struggle with heat stress and produce fewer fruits. Aim for the mid-April to early May window.
Overcrowding
Tomatoes need space for air circulation. Crowded plants are more prone to fungal diseases like early blight. Follow spacing recommendations for your variety. Don’t be tempted to squeeze in extra plants.
Caring For Tomatoes After Planting
Once your tomatoes are in the ground, proper care ensures a good harvest. Arkansas weather requires attention to watering, feeding, and pest control.
Watering Guidelines
Tomatoes need consistent moisture, especially during fruit set. Water deeply once or twice a week, depending on rainfall. Aim for 1-2 inches of water per week. Water at the base of plants to keep foliage dry, which reduces disease.
Use drip irrigation or soaker hoses for best results. Avoid overhead watering in the evening, as wet leaves overnight promote fungal growth.
Fertilizing Schedule
Feed tomatoes regularly throughout the growing season. Start with a balanced fertilizer at planting. Switch to a phosphorus-rich formula when flowers appear. Apply fertilizer every 2-3 weeks according to package directions.
Watch for signs of nutrient deficiency. Yellowing lower leaves may indicate nitrogen shortage. Blossom end rot, common in Arkansas, signals calcium deficiency. Maintain consistent watering to help prevent this.
Pest And Disease Management
Arkansas tomatoes face several common pests and diseases. Here’s what to watch for:
- Early blight – Brown spots on lower leaves. Remove affected leaves and improve air circulation.
- Hornworms – Large green caterpillars that eat leaves. Handpick them or use Bt spray.
- Spider mites – Tiny pests that cause stippled leaves. Use insecticidal soap or neem oil.
- Blossom end rot – Dark, sunken spots on fruit bottoms. Maintain even watering and add calcium.
Extending The Growing Season
Arkansas gardeners can enjoy tomatoes from early summer through fall with some planning. Use these techniques to maximize your harvest.
Using Row Covers
Floating row covers protect plants from cold snaps in spring and fall. They also keep pests away. Remove covers when temperatures rise above 85°F to prevent overheating.
Fall Planting
Plant a second crop of tomatoes in late July for fall harvest. Choose early-maturing varieties. Provide shade during the hottest part of the day to help transplants establish. Fall tomatoes often have less pest pressure.
Overwintering Indoors
If you have a favorite plant, you can bring it indoors before frost. Prune it back and pot it up. Place in a sunny window or under grow lights. You may get a few winter tomatoes.
Frequently Asked Questions
Can I Plant Tomatoes In March In Arkansas?
It’s risky. March planting is only possible in southern Arkansas with protection like row covers. Most gardeners should wait until April. Soil temperatures in March are usually too low for healthy root growth.
What Happens If I Plant Tomatoes Too Early In Arkansas?
Early planting can stunt growth, cause yellowing leaves, and increase disease risk. Plants may die if a late frost hits. Even if they survive, they often produce less fruit than properly timed plantings.
Is It Better To Plant Tomatoes In The Morning Or Evening In Arkansas?
Morning planting is best. Plants have the day to adjust before cooler night temperatures. Avoid planting in the heat of the afternoon, as transplants can wilt quickly. Water well after planting regardless of time.
Can I Grow Tomatoes Year-round In Arkansas?
Not outdoors. Tomatoes are warm-season crops and won’t survive winter frosts. With a greenhouse or indoor setup, you can extend the season significantly. Some gardeners grow tomatoes indoors under lights during winter.
How Deep Should I Plant Tomato Seedlings In Arkansas?
Plant them deep, burying two-thirds of the stem. Remove leaves that would be below soil level. This encourages strong root development along the buried stem. Deeper planting also helps anchor tall varieties.
Final Tips For Arkansas Tomato Growers
Success with tomatoes in Arkansas comes down to timing and preparation. Wait for warm soil, choose the right varieties, and provide consistent care. Monitor weather forecasts and be ready to protect plants from unexpected cold snaps.
Keep a garden journal to track your planting dates and results. This helps you refine your timing each year. Share your experiences with local gardening groups for region-specific advice.
With the right approach, you can enjoy fresh, homegrown tomatoes from early summer through fall. The effort is well worth it when you taste that first ripe tomato from your own garden.