Glacier Tomato
A very early, cold tolerant variety for short seasons: sweet, mild red orange fruit in clusters, ripening weeks ahead and open pollinated.
Flavor & performance
The honest verdict
What's great
- Very early, among the first to ripen
- Cold tolerant, great for short, cool seasons
- Sweet, mild flavor, good for an early tomato
- Compact, tidy plant
- Open pollinated, so you can save the seed
Watch out for
- Small fruit, not a big slicer
- Flavor good but not as deep as a late heirloom
- Thin skin can crack after rain
- Moderate disease resistance
- Best in cool climates, less standout in the heat
Grow it in your zone
| Trait | Glacier Tomato | Stupice | Oregon Spring |
|---|---|---|---|
| Color | Red orange | Red | Red |
| Flavor | Sweet, mild | Sweet, tangy | Mild, balanced |
| Fruit size | 2 to 3 oz | 1 to 2 oz | 4 to 6 oz |
| Days | About 55 | 55 to 60 | 60 to 70 |
| Habit | Semi determinate | Indeterminate | Determinate |
| Cold tolerance | Excellent | Excellent | Good |
| Save seeds | Yes | Yes | Yes |
Bred for the Exact Weather That Ruins Most Tomatoes
Cold nights are one of the most common reasons tomato plants fail to set fruit. Most varieties simply were not built for it.
This one was. It comes from a breeding tradition built specifically around cold climate survival, not warm weather flavor.
Gardeners in places like Alberta, Minnesota, and the upper Midwest have relied on varieties like this one for decades. A short growing season leaves little room for a tomato that needs warm nights to set fruit.
Understanding that background explains a lot about how this tomato behaves in your garden. This guide covers the history, the science behind the cold tolerance claim, and everything you need to grow it well.
What Glacier Is
This variety was first introduced in Sweden in 1985. It stayed relatively obscure until a horticulture teacher in Alberta, Canada took notice.
Ron Driskill moved from the American South to Olds, Alberta. He struggled to grow tomatoes in the short, cold northern season.
He then discovered a Siberian tomato variety in a nearby greenhouse. In 1983 he founded Siberia Seed Company to focus entirely on cold hardy varieties.
Driskill’s catalog eventually included Siberia, Subarctic Maxi, and this variety, all bred or selected for extra early, cold tolerant performance. His promotion is a big part of why this Swedish variety became known across North America.
He later added Landry’s Russian, another cold hardy heirloom, after two years of testing near Olds. That steady expansion shows just how dedicated his catalog was to solving one specific problem, cold climate tomato growing.
This is a determinate to semi determinate plant with potato leaf foliage, reaching about 2.5 to 3 feet tall. It reaches maturity in as little as 55 days, making it one of the earliest slicing tomatoes available.
Sources describe its growth habit slightly differently, some calling it determinate and others semi determinate. In practice, expect a compact plant that still benefits from light support. That habit sits closer to determinate than to a sprawling vine.
What It Looks Like
Fruit is small to medium, typically 1 to 3 ounces, and ripens to a round, deep red globe shape. The potato leaf foliage gives the plant a smoother, more rounded leaf look than a standard tomato.
Because it stays fairly compact, the plant does not need the tall staking a full indeterminate variety requires. That makes it a practical choice for smaller garden spaces too.
The combination of small fruit and a compact plant is typical of tomatoes bred for extreme climates. Northern breeding programs consistently favor smaller fruit that ripens fast over large fruit that needs a long, warm season.
Flavor and Best Uses
Flavor is described as tasty and sweet, with a good acid balance for an early season tomato. Many early varieties sacrifice flavor for speed, but this one holds up reasonably well by comparison.
Use it fresh in salads and sandwiches, or straight off the vine while your main season tomatoes are still ripening. Its small size also makes it a fine choice for quick pan sauces.
Because it ripens so early, it fills a real gap in the garden calendar. You get fresh, ripe tomatoes weeks before slower varieties even set their first fruit.
For gardeners in genuinely short season regions, that early harvest matters more than a simple bonus. It can be the difference between getting a real tomato crop and running out of warm weather before anything ripens.
Why Cold Nights Ruin Most Tomatoes, and Why This One Handles It Better
Most tomato blossom problems trace back to temperature, not soil or watering. University of Missouri Extension explains that pollen becomes less viable once nighttime temperatures drop below 55 degrees.
Cold temperatures reduce pollen viability, and that is only part of the problem. They also slow the growth of the pollen tube that has to develop after pollination for fruit to actually form.
University of Maryland Extension notes a related cold weather problem called catfacing. A puckered, distorted scar forms on the fruit as it develops around earlier blossom damage. Larger fruited varieties suffer from this the most.
This variety was bred specifically to keep functioning through the exact conditions that cause both problems. Its small fruit size works in its favor here.
Smaller fruit is simply less prone to catfacing than large slicers. Its Alberta bred cold tolerance adds another layer of protection on top of that.
That is the real reason this tomato performs well in early spring and cool fall weather. Other varieties stall out or produce misshapen fruit under the same conditions. This one was built for exactly that weather from the start.
How to Grow the Glacier Tomato
Our guide to growing tomatoes covers the fundamentals every variety shares. Here is what this variety needs specifically.
Seed Starting
Start seeds indoors about 6 to 8 weeks before your last expected frost. Use a sterile seed starting mix and keep it warm and evenly moist until germination.
This variety is bred for cold tolerance. That means you can push your transplant date earlier than you would with a typical slicer. That head start is exactly what makes its extra early harvest possible.
Transplanting and Spacing
Harden seedlings off gradually over about a week before planting outside. This variety tolerates cooler transplant conditions better than most, though a hard frost will still kill it.
Space plants about 2 feet apart. The compact growth habit does not need the wide spacing an indeterminate variety requires. Bury the stem a bit deeper than it sat in its pot for stronger root development.
Staking and Support
A simple cage or a single stake is usually enough for this compact plant. It does not need aggressive pruning or a tall support structure.
Light support still helps keep fruit off the ground and improves airflow around the foliage. That airflow matters for disease prevention as much as it does for tidiness.
Growing in Containers
This variety’s compact size makes it a genuinely good container candidate, especially for an early crop on a patio or balcony. A 5 to 10 gallon container with good drainage works well.
Containers also warm up faster than garden soil in early spring, which can push your harvest even earlier. Just watch moisture closely, since containers dry out faster than the ground.
Our guide to growing tomatoes in pots covers container growing in full.
Light and Soil
Give it full sun, ideally 6 to 8 hours a day once temperatures warm up. It grows best in loose, well drained soil enriched with compost.
A soil test before planting tells you exactly where your garden stands on pH and nutrients. Aim for a pH between 6.0 and 6.8 for the best results.
Watering and Fertilizing
Water consistently, aiming for at least an inch a week from rain or irrigation combined. Even moisture matters most while fruit is sizing up, since inconsistent watering leads to cracking.
Apply a balanced fertilizer at planting, then side dress lightly once fruit begins to set. Avoid heavy nitrogen doses, which push leafy growth at the expense of fruit. Early fruit set is this variety’s whole reputation, so protect it.
Our guide to watering tomatoes covers the rhythm in more depth. And our guide to fertilizing tomatoes handles the feeding schedule.
Companion Planting
Basil and marigolds are classic companions, sharing similar sun and water needs while potentially deterring some pests. Both work fine alongside this compact variety without crowding it.
Avoid planting near fennel or dill, which can slow tomato growth. Given this variety’s small footprint, you likely have room for a companion or two nearby anyway.
Extending Your Harvest
Because this variety tolerates cool conditions so well, it also works for a fall crop in many climates. Start a second round of seeds in mid to late summer for a fresh harvest as temperatures drop again.
Its cold tolerance means it can often keep producing later into fall than standard varieties. Driskill’s own promotional material described picking fruit right up until the first hard freeze.
Grower's Picks for Glacier
The gear that matters most for growing Glacier well, so you can buy the right thing once.
Preventing Catfacing and Poor Fruit Set
Even a cold tolerant variety benefits from a little extra help during a sharp cold snap. Row cover fabric draped loosely over young plants can add several degrees of protection on a cold night.
Avoid heavy pruning right before a predicted cold spell, since fewer leaves means less insulation for developing blossoms. A little extra foliage acts as a buffer during unexpected temperature drops.
If catfacing does show up on a few early fruit, do not worry too much. University of Maryland Extension notes that fruit set typically improves once temperatures stabilize, and later trusses are usually unaffected.
Problems to Watch For
Early blight can appear on lower leaves as small, dark spots with concentric rings, especially in humid conditions. NC State Extension recommends pruning the lowest leaves and improving airflow to reduce pressure. Our tomato problem guide walks through the most common ones.
Cracking becomes more likely when heavy rain follows a dry spell. University of Missouri Extension recommends consistent watering and mulching to prevent the rapid moisture swings that cause it.
Watch for typical early season pests like cutworms, which can damage young transplants right at the soil line. A simple cardboard collar around the stem at planting time prevents most cutworm damage.
Aphids can show up on new growth once temperatures warm up. A strong spray of water or a mild insecticidal soap usually clears up a minor infestation.
Because this is an open pollinated heirloom, saved seed grows true to type. Choose fruit from your healthiest, earliest producing plant if you want to save seed for next season.
For identification and treatment, our tomato disease guide covers the full list.
Harvest and Storage
Pick fruit once it reaches a deep, even red color and comes away easily from the vine. Because this variety ripens so early, check plants daily once the first fruit start to color up.
Store ripe tomatoes at room temperature rather than the refrigerator. Cold storage dulls both flavor and texture.
Because individual fruit are small, this variety is not the best choice for canning in bulk. It shines more as a fresh eating tomato that bridges the gap before your main season harvest arrives.
If you end up with extra fruit, freezing whole tomatoes on a tray works well for later use in sauce. Just wash and dry them first, then bag them once frozen solid.
How Glacier Compares
Against Siberia, another Driskill promoted cold hardy variety, this one offers a similar early harvest with a slightly different fruit shape and flavor profile. Both share the same cold climate breeding purpose.
Against Subarctic Maxi, a larger fruited variety from the same catalog, this variety gives up some fruit size. In exchange, it offers faster, more reliable cold weather performance. Choose Subarctic Maxi for more size, and choose this variety for speed.
Against Early Girl, a widely grown hybrid early tomato, this variety is open pollinated and true breeding. Early Girl is a hybrid bred for broader adaptability instead. This one wins specifically in cold, short season conditions.
Against larger slicers grown in the same garden, this variety’s small fruit size is an advantage early in the season. Smaller fruit sets more reliably when nights are still cold.
The Verdict
Glacier earns its place in a cold climate or short season garden through genuine, purpose built breeding rather than marketing. The Sweden to Alberta history behind it is real and well documented. That history is directly tied to why it performs the way it does.
If you garden somewhere with a short season or unpredictable spring cold snaps, this variety is worth the space. The same goes for gardeners facing an early fall frost. It delivers ripe tomatoes when almost nothing else in the garden can.
Pair it with a slower, richer flavored heirloom for later in the season. That combination covers both ends of your growing calendar well.
Just do not expect the rich, complex flavor of a full season heirloom. This tomato’s whole purpose is speed and reliability in weather that would stall out almost anything else.
For gardeners who have struggled with blossom drop or catfacing in a cold spring, this variety is worth trying. The breeding behind it was built to solve exactly that problem.
It is a small, unglamorous tomato with a genuinely practical reason to exist. That is worth something in a garden full of showier varieties.