These Siberian Tomato varieties are relatively hardy.

Cherry Variety: One of the most tasty varieties of tomato. 60 days.
Frost tolerance: does not tolerate frosts well
Sowing: sow at 1cm depth; between rows and plants, allow 75 cm
Growing: Allow unrestricted growth. Avoid watering with exceptionally cold water. Use an area rich in compost. Tomato plants can grow very large if planted in a dedicated tomato plant, rather than a grow bag. Provide plenty of light to avoid spindly growth.

Red Siberian: Large tomato fruits: “A superb tomato”. 70 days.
Frost tolerance: does not tolerate frosts well
Sowing: sow at 1cm depth; between rows and plants, allow 75 cm
Growing: Allow unrestricted growth. Avoid watering with exceptionally cold water. Use an area rich in compost. Slightly acidic soil preferred. Tomato plants can grow very large if planted in a dedicated tomato plant, rather than a grow bag.