Manitoba, Heirloom Tomato Seeds

Manitoba, Heirloom Tomato Seeds — The Canadian Prairie Slicer Bred for Short Summers, Heavy Yields, and Cold-Climate Reliability, 60–70 Days

Manitoba (Solanum lycopersicum) was developed in Canada specifically to deliver reliable, heavy yields during the short, cool summers of the northern prairies — and it excels at exactly that. A vigorous compact determinate variety, Manitoba produces medium-sized, round, bright red fruits with a sweet, savory, and juicy flavor and medium acidity — excellent for slicing, salads, cooking, or canning. Short bushy plants make it one of the best container tomatoes available, and its proven resistance to Fusarium Wilt 1 and Verticillium Wilt makes it a robust, low-worry choice for gardeners in challenging climates. The go-to tomato for northern regions, short growing seasons, and anyone who wants a reliable, productive early harvest. 60–70 days from transplant.

Why Grow Manitoba?

• Bred in Canada for cold climates and short growing seasons — proven reliable where other tomatoes struggle
• Heavy yields of medium round bright red fruits — sweet, savory, juicy with medium acidity
• Resistant to Fusarium Wilt 1 and Verticillium Wilt — robust disease resistance for northern soils
• Compact bushy determinate habit — ideal for containers, small gardens, and raised beds
• Excellent for slicing, salads, cooking, and canning — versatile and flavorful at peak ripeness
• Stagger plantings 1 week apart — extend harvest beyond the typical determinate window
• Open-pollinated heirloom — save seed year after year

Growing Manitoba Tomatoes

Start seeds indoors 7–9 weeks before your last spring frost date, ¼ inch deep in fertile, well-draining, slightly acidic soil (pH 6.2–6.8). Transplant outdoors after all frost danger has passed and soil temperature consistently reaches 70–85°F. Space plants 24–36 inches apart in rows 36 inches apart. To extend the harvest of this determinate variety, stagger plantings 1 week apart. Provide stakes or small cages to keep fruit off the ground. Prune lower branches lightly for air circulation. Water consistently and evenly — avoid drought stress and overwatering. Use soaker hoses or mulch to retain moisture. Fertilize with a balanced fertilizer slightly higher in phosphorus and potassium to favor fruit production over foliage. Use row covers or cloches to protect from early or late frosts in northern climates.

Companion Planting

Plant alongside basil, marigolds, and nasturtiums to deter common tomato pests and enhance flavor. Practice a 3-year crop rotation to prevent soil-borne disease buildup. Mulch around the base to conserve moisture, suppress weeds, and regulate soil temperature.

Harvesting

Manitoba is a determinate variety — it sets all its fruit at once over a concentrated period. Monitor for full, vibrant red color and firm texture — typically 60–70 days from transplant. Gently twist and lift ripe fruits from the vine. Harvest promptly at peak ripeness for best flavor whether eating fresh, slicing, cooking, or canning.

Packed and shipped by Box Garden Seeds LLC — heirloom seeds grown without GMOs, selected for flavor, resilience, and your garden’s success.