Onion 'Mammoth Improved'

Try to plant in a location that enjoys full sun and remember to water moderately. Mammoth Improved is generally regarded as a very hardy plant, so this plant will tend to survive through freezing conditions. Mammoth Improved needs a loamy, clay and sandy soil with a ph of 6.0 to 7.0 (weakly acidic soil to neutral soil).

Try to aim for a seed spacing of at least 1.95 inches (5.0 cm) and sow at a depth of around 0.98 inches (2.5 cm). For optimal germination, soil temperature should be a minimum of 13°C / 55°F.

By our calculations, you should look at sowing Mammoth Improved about 28 days before your last frost date.

Mammoth Improved is very hardy, so ensure you wait until all danger of frost has passed in your area before considering planting outside.

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