Quick wins for a faster PC:
Repair Windows errors before they cause bigger problemsFix Now →Scan for outdated or missing drivers - takes under a minuteDriver Scan →Plant tomatoes outdoors after the local risk of frost has passed and the soil has warmed to about 60°F. That soil-temperature target comes from UNH Extension; the right calendar date depends on your location, the season’s weather and whether you can protect plants from cold.
How to tell when tomatoes can go outside
Use two checks together: local frost risk and soil warmth. An average last-frost date is a planning guide, not a promise that a late freeze cannot happen. Soil may also remain cold after daytime air temperatures rise. Illinois Extension advises planting soon after the local frost-free date once soil is warm; UNH Extension gives about 60°F as a practical soil-temperature target.
- Check the forecast: Wait until the danger of frost has passed for your area, and consider the short-range forecast before transplanting.
- Check the soil: Aim for soil near 60°F. A soil thermometer can help, but the key is to assess the soil where the tomatoes will grow rather than relying only on a warm afternoon.
- Account for cold nights: Cold exposure can set plants back even if it does not kill them. Illinois Extension reports that tomatoes exposed to cold night temperatures may take up to two weeks to resume normal growth.
For the lowest-risk approach, follow Illinois Extension’s advice to plant when soil is warm, soon after your local frost-free date: Illinois Extension’s tomato guidance.
Why planting dates vary by region
There is no single U.S. date that works for every garden. Elevation, coastal influence, local frost pockets and the year’s weather all affect the safe window. Regional examples show the scale of the difference, but should not be copied as dates for another climate.
#1 Best Overall
- HIGH-YIELD SEED PACK WITH 300 TOMATO SEEDS FOR PLANTING: This pack includes 300 beefsteak tomato seeds, ensuring an abundant harvest. Perfect for gardeners looking to grow a large supply of meaty, flavorful tomatoes for fresh use, cooking, or preserving throughout the growing season.
- EASY TO GROW FOR BEGINNERS AND PROS: These tomato seeds thrive with minimal effort. With proper staking, consistent watering, and full sun, enjoy a bountiful harvest of large tomatoes. Ideal for gardeners of all levels, from backyard enthusiasts to homesteaders.
- LARGE, JUICY FRUITS PERFECT FOR SLICING: Known for their massive size and rich flavor, each beefsteak tomato weighs up to 1-2 pounds. Their meaty texture and juicy slices are perfect for burgers, sandwiches, and fresh salads, adding unbeatable taste and quality.
- HEIRLOOM QUALITY FOR TRADITIONAL TASTE: Grow heirloom beefsteak tomatoes with exceptional flavor. These seeds offer a rich, sweet taste passed down through generations, delivering the authentic garden-fresh experience home gardeners love.
- SUPPORTS A HEALTHY GARDEN ECOSYSTEM: Attracts beneficial pollinators like bees for natural pollination. These beefsteak tomato plants promote biodiversity in your garden, making them a sustainable choice for eco-conscious gardeners.
| Example region | Guidance in the cited source | How to use it |
|---|---|---|
| New Hampshire | UNH Extension says Memorial Day weekend is generally safe in much of the state; southern locations may plant one or two weeks earlier, while northern frost pockets may wait until mid-June. | Use the state-specific advice alongside local frost conditions and soil warmth. |
| California | UC IPM gives approximate windows ranging from December–March in desert valleys to May in northern and North Coast areas. | These are California examples only; UC IPM cautions that local climate varies. |
See UC IPM’s tomato-growing guidance for its California context. In any region, local conditions can differ from broad seasonal averages.
When to start tomato seeds indoors
Start seeds about six to eight weeks before the date you expect to transplant outdoors, according to UNH Extension. UF/IFAS Extension gives a four-to-eight-week window before the local average last-frost date. Treat these as planning ranges, not a reason to sow as early as possible: seedlings started too far ahead can become difficult to manage before outdoor conditions are suitable.
Rank #2
- Premium Cherry Tomato Seeds: Authentic Open-Pollinated Premium Heirloom Seeds (USA) Non-GMO, Untreated, High Germination Rate. High-growing variety for open ground, greenhouses, patio containers, and urban farming. Explosive berry flavor. Cascades of glossy ruby clusters. Prolonged fruiting cycle.
- Berry Diamond. A sensational variety. An intense dessert profile among mini tomatoes. It blurs the line between a vegetable and a ripe summer berry, revealing the classic tomato as an exquisite delicacy. Valued for its jeweler-crafted proportions, vibrant sommelier palette, "lacquered" shine, concentrated flavor, and impeccable visual style for signature plating. For true connoisseurs of haute cuisine.
- Sugar Concentrate. Record Brix. The variety redefines the possibilities of tomato flavor. Natural sweetness leaves a deep, lingering aftertaste with notes of exquisite berry confiture and a noble, subtle fruity acidity. The bright, multi-layered aroma of sun-warmed vines intertwines with delicate musky and caramel nuances—a true marker of a genuine cherry.
- Juicy Reservoir. Unique Fruit Anatomy. A monolithic structure eliminates looseness and watery voids—featuring a minimal seed chamber volume and high pulp density encased in a glossy skin. A thin yet durable skin contains internal pressure. Juicy crunch and capsule elasticity at absolute maturity.
- Fractal Ornament. A graceful yet sturdy lace of flexible branches. Instead of single settings, complex branching fans emerge. Ruby clusters completely overlap the foliage, creating a continuous cascade of hundreds of glossy berries. All the cherry's vigor is directed toward calibrating mini-fruits within multi-tiered cascades.
For indoor sowing, UF/IFAS recommends lightweight seed-starting mix in shallow containers. Keep the growing medium from drying out, and provide strong light after germination. Its step-by-step advice is in UF/IFAS Extension’s tomato-sowing guide.
Harden seedlings before transplanting
Seedlings raised indoors need a gradual transition to outdoor sun and wind. UNH Extension advises starting to harden them about ten days before transplanting, increasing exposure day by day, and bringing plants indoors when temperatures fall below 60°F. UF/IFAS also recommends increasing outdoor sun exposure gradually.
The Tool Desk
Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →Rank #3
- Classic Beefsteak Flavor: Beef steak tomato seeds grow mild, juicy, meaty fruits perfect for slicing tomato use. Large tomato seeds develop firm flesh ideal for sandwiches, salads, burgers, and fresh eating from your vegetable garden.
- Easy Garden Care: Tomato plant seeds thrive in well-draining sandy loam soil. Space beefsteak tomatoes plants 18–24 inches apart, stake or cage vines, and maintain consistent watering for best growth for heirloom seeds.
- Giant Fruit Size: Beefsteak tomato plant seeds produce massive red slicing tomatoes. Indeterminate tomato seeds ideal veggie seeds for garden plots, raised beds, and greenhouses.
- Fast Germination: Tomato seeds for planting germinate in 7–10 days when planted 1/4 inch deep. These non gmo tomato seeds perform best in full sun across USDA zones 2–11.
- Big Fruit Size: These tomato plant seeds produce large red tomatoes, and are suitable seeds for garden plots, raised beds, and greenhouses.
- Begin about ten days before the planned transplant, choosing a mild day for the first outdoor exposure.
- Increase the time outside and the amount of sun and wind exposure gradually each day.
- Bring seedlings back indoors when temperatures fall below 60°F, following UNH Extension’s guidance.
- Transplant only when frost danger has passed and the soil is warm enough.
Moving indoor-grown seedlings straight into full sun and wind can stress them; gradual acclimation helps them adjust.
Choose between nursery transplants and starting from seed
Buying transplants
Choose stocky, healthy plants with thick, straight stems and bright green leaves. UNH Extension advises avoiding tall, lanky seedlings and large plants already bearing flowers or fruit. A transplant still needs to be hardened off if it has been grown under protected conditions, and it should wait for suitable outdoor conditions.
Rank #4
- USDA Certified Organic by Oregon Tilth
- 10 varieties of tomato (Solanum lycopersicum) seeds packed fresh for the current and following year
- Cherokee Purple, San Marzano, Yellow Pear, Chocolate Cherry, Green Zebra, Black Krim, Brandywine Pink, Virginia Sweets, Rosso Sicilian, and Amana Orange
- 100%: non-GMO, open pollinated, trusted varieties
- Easy tomato grow guide included, with tips printed on the back of each packets too
Starting your own
Seed-starting gives you control over variety and timing, but requires indoor space, light and attention to moisture. Plan the sowing date backward from your likely transplant window, using the four-to-eight-week guidance rather than sowing far in advance.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Should you plant early with protection?
Covers and black plastic mulch can help accumulate heat or provide some frost protection, as Illinois Extension notes, but they do not make an early planting risk-free. Cold can still slow or halt growth temporarily, and protection must suit the conditions. If you cannot monitor temperatures or protect plants, waiting for warm soil and the safer local window is the more cautious choice.
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
Best Value
- VARIETY PACK OF 10 HEIRLOOM TOMATOES – Ace 55, Aunt Ruby’s Green, Beefsteak, Black Krim, hillbilly (marbled/ striped), Mortgage Lifter, Red Brandywine, Red Cherry, Roma, Yellow Pear
- COLORFUL & DELICIOUS – A flavorful mix of red, yellow, purple, and green tomatoes for fresh eating, slicing, canning, salsa, sauces, and long-term pantry storage from your home garden
- EASY TO GROW – Start indoors or outdoors, tomatoes thrive in full sun with moderate watering, seed packets include planting and seed-saving guidance for beginners
- GARDEN-READY COLLECTION –– Suitable for backyard gardens, raised beds, and homestead plots, with plants that benefit from staking or cages and perform across many climates
- FAMILY OWNED USA SMALL BUSINESS – heirloom non-GMO seeds from Survival Garden Seeds, a trusted American brand; always open-pollinated, untreated, and quality tested for garden success
Choose varieties and supports for your season
Tomato varieties differ in time to ripen and growth habit. UNH Extension recommends choosing varieties tested under local conditions; Illinois Extension also discusses the importance of planting timing and variety maturity to the local season. Consider how long your growing season is, whether the variety’s maturity timing fits it, and whether the plant needs support.
If you plan to use stakes or cages, install them at planting time, as UNH Extension advises. Doing so avoids disturbing the plant later when adding support.
Quick Recap
A practical planting-day checklist
- Frost danger has passed for your location, and the forecast does not indicate an imminent freeze.
- Soil is near 60°F, the UNH Extension practical target.
- Indoor-grown seedlings have been hardened off gradually.
- Transplants are healthy and stocky, not lanky or already laden with flowers or fruit.
- You have chosen a variety suited to your growing season and growth habit.
- Install stakes or cages at planting if you will use them, then water newly planted seedlings well.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
