Maine’s cool soil temperatures in early summer call for tomato varieties that germinate and set fruit in less-than-ideal warmth. Finding the best tomatoes to grow in maine means choosing types that handle short seasons, cool nights, and humidity. This guide walks you through top performers, planting tips, and common pitfalls so you get ripe fruit before frost hits.
You don’t need a greenhouse or special equipment. Just the right seeds and a little planning. Maine gardeners often struggle with tomatoes that look great in August but never turn red. The secret is picking varieties bred for northern climates.
Best Tomatoes To Grow In Maine
These tomatoes thrive in Maine’s unique growing conditions. They mature quickly, resist common diseases, and produce well even when summer is cool. Below are the top categories and specific varieties that work.
Early Season Tomatoes
Early tomatoes are your best bet for a reliable harvest. They ripen in 55 to 70 days from transplanting. This gives you fruit before the first frost in late September or early October.
- Sub Arctic Plenty – Ripens in 50 days. Small, red fruits. Very cold tolerant.
- Glacier – Matures in 55 days. Produces sweet, medium-sized tomatoes even in cool weather.
- Stupice – A Czech heirloom. Ready in 60 days. Flavorful and productive.
- Northern Lights – Bred in Canada. Ripens in 58 days. Yellow-orange color with mild taste.
Plant these as soon as soil warms to 50°F. Use black plastic or row covers to boost soil temperature.
Disease Resistant Varieties
Maine’s humidity can cause blight and leaf spot. Choose tomatoes with built-in resistance to save yourself trouble. Look for letters like V, F, N, and T on seed packets.
- Celebrity – VFFNTA resistant. Reliable slicer. Matures in 70 days.
- Mountain Merit – Resists late blight. Produces large red fruits in 75 days.
- Defiant PhR – Bred for blight resistance. Medium-sized tomatoes in 65 days.
- Iron Lady – Excellent against early and late blight. Harvest in 70 days.
Rotate your tomato patch every year. This prevents soil-borne diseases from building up.
Cherry And Salad Tomatoes
Cherry tomatoes are the easiest for Maine gardeners. They set fruit even in cool weather and ripen quickly. Kids love picking them straight off the vine.
- Sun Gold – Super sweet orange cherry. Ripens in 57 days. Very productive.
- Sweet 100 – Classic red cherry. Produces clusters of fruit. Matures in 65 days.
- Jasper – Resists cracking. Red cherry with good flavor. Ready in 60 days.
- Black Cherry – Deep purple color. Rich taste. Takes 70 days but worth the wait.
These work great in containers on a deck or patio. Give them at least 6 hours of sun daily.
Heirloom Tomatoes For Maine
Heirlooms have amazing flavor but can be tricky in short seasons. Stick with varieties bred for northern regions. They need 70 to 80 days to mature.
- Brandywine – Classic beefsteak. Needs 80 days. Use black plastic to warm soil.
- Cherokee Purple – Dark, rich flavor. Matures in 75 days. Does well in cool summers.
- Amish Paste – Great for sauces. Oblong fruits in 75 days. Tolerates cool nights.
- Pruden’s Purple – Similar to Brandywine but earlier. Ready in 70 days.
Start heirlooms indoors 8 weeks before your last frost date. Use grow lights to prevent leggy seedlings.
Paste And Sauce Tomatoes
If you want to make sauces or salsas, choose paste tomatoes. They have less water and more flesh. They also ripen more reliably in Maine.
- Roma – Standard paste tomato. Matures in 75 days. Disease resistant.
- San Marzano – Italian heirloom. Needs 80 days. Use for canning.
- Polar Beauty – Bred for cold climates. Ready in 65 days. Good for sauces.
- Opalka – Polish heirloom. Long fruits. Matures in 75 days.
Paste tomatoes need less pruning than slicing types. Let them grow naturally for maximum yield.
How To Grow Tomatoes In Maine Successfully
Even the best varieties need proper care. Follow these steps to get a great harvest.
Start Seeds Indoors
Maine’s growing season is short. Start seeds indoors 6 to 8 weeks before your last frost date. For most of Maine, that means starting in mid-March to early April.
- Use seed starting mix, not garden soil.
- Plant seeds 1/4 inch deep.
- Keep soil moist and warm (70-75°F).
- Provide 14-16 hours of light daily.
- Transplant to larger pots after true leaves appear.
Hardening off is crucial. Move seedlings outside for a few hours each day, increasing time over a week. This prevents transplant shock.
Prepare Your Garden Bed
Tomatoes need well-draining soil with lots of organic matter. Test your soil pH. Aim for 6.0 to 6.8.
- Add compost or aged manure a week before planting.
- Work in a balanced fertilizer like 10-10-10.
- Use black plastic mulch to warm soil faster.
- Space plants 24 to 36 inches apart.
Raised beds work great in Maine. They warm up quicker in spring and drain better in rainy summers.
Plant At The Right Time
Wait until soil temperature reaches 60°F. In coastal Maine, that’s usually late May. Inland areas may need to wait until early June.
Plant tomatoes deep. Bury the stem up to the first set of leaves. Roots will form along the buried stem, making plants stronger.
Use row covers or cloches if a cold snap threatens. Remove them during the day so bees can pollinate flowers.
Water And Fertilize Consistently
Tomatoes need steady moisture. Inconsistent watering causes blossom end rot and cracked fruit.
- Water deeply once or twice a week.
- Avoid wetting the leaves to prevent disease.
- Use drip irrigation or soaker hoses.
- Mulch with straw or grass clippings to retain moisture.
Fertilize every 2 weeks with a balanced liquid fertilizer. Switch to a low-nitrogen formula once fruit sets to encourage ripening.
Prune And Support Plants
Staking or caging keeps tomatoes off the ground. This reduces disease and makes harvesting easier.
- Use 6-foot stakes or sturdy cages.
- Tie stems loosely with soft cloth.
- Remove suckers from indeterminate varieties.
- Trim lower leaves to improve air flow.
Indeterminate tomatoes keep growing until frost. Prune them to control size and focus energy on fruit production.
Deal With Pests And Diseases
Common problems in Maine include hornworms, aphids, and blight. Catch them early to prevent damage.
- Handpick hornworms. Check daily.
- Spray aphids with insecticidal soap.
- Remove diseased leaves immediately.
- Use copper spray for blight prevention.
Companion planting helps. Grow basil, marigolds, or nasturtiums near tomatoes to repel pests.
Best Tomato Varieties For Different Maine Regions
Maine has diverse climates. Coastal areas are cooler but have longer growing seasons. Inland areas get hotter but have shorter summers. Northern Maine has the shortest season of all.
Coastal Maine
Cool breezes keep temperatures moderate. Choose varieties that handle humidity and fog.
- Glacier
- Stupice
- Celebrity
- Sun Gold
These tomatoes set fruit even when nights are in the 50s. They also resist fungal diseases common in coastal gardens.
Inland Maine
Warmer days and cooler nights. You can grow a wider range of varieties, including some heirlooms.
- Brandywine
- Cherokee Purple
- San Marzano
- Sweet 100
Inland gardeners often get ripe tomatoes by mid-August. Use row covers early in the season to protect from late frosts.
Northern Maine
Short growing season with cold nights. Stick with ultra-early and cold-tolerant varieties.
- Sub Arctic Plenty
- Northern Lights
- Polar Beauty
- Jasper
Start seeds indoors by mid-March. Use black plastic and cloches to extend the season. Harvest before mid-September.
Common Mistakes Maine Gardeners Make
Even experienced growers run into issues. Here are pitfalls to avoid.
- Planting too early – Cold soil stunts growth. Wait until it warms up.
- Overwatering – Wet soil leads to root rot. Let top inch dry out between waterings.
- Ignoring disease – Remove infected leaves right away. Don’t let blight spread.
- Choosing wrong varieties – Late-maturing tomatoes rarely ripen in Maine.
- Skipping soil test – Nutrient imbalances cause poor fruit set.
Learn from these mistakes. Your second season will be much better than the first.
Frequently Asked Questions
What is the easiest tomato to grow in Maine?
Cherry tomatoes like Sun Gold and Sweet 100 are the easiest. They set fruit in cool weather and ripen quickly. They also resist diseases well.
Can I grow beefsteak tomatoes in Maine?
Yes, but choose early varieties like Brandywine or Pruden’s Purple. Use black plastic to warm soil and start seeds indoors early. They need 75 to 80 days to mature.
When should I plant tomatoes in Maine?
Wait until after the last frost, usually late May to early June. Soil temperature should be at least 60°F. Use a soil thermometer to check.
How do I protect tomatoes from late blight in Maine?
Choose resistant varieties like Defiant PhR or Iron Lady. Space plants for good air flow. Water at soil level. Remove infected leaves immediately.
What tomatoes grow best in containers in Maine?
Compact varieties like Glacier, Sub Arctic Plenty, and Jasper work well. Use large pots with drainage holes. Place in full sun and water regularly.
Final Tips For A Bountiful Harvest
Growing the best tomatoes in Maine takes a little extra effort, but the reward is worth it. Start with the right varieties, prepare your soil, and stay on top of watering and disease control.
Keep a garden journal. Note which varieties performed best and when you planted. This helps you improve each year.
Share your harvest with neighbors and friends. Homegrown tomatoes taste nothing like store-bought. You’ll be proud of what you grew.
Remember, the key is choosing varieties that match your specific region and microclimate. With the tips in this guide, you’ll enjoy fresh tomatoes from July through October.
Happy growing in Maine’s beautiful but challenging season. Your garden will thank you.