Onion Mammoth Improved 100 seeds
This famous variety can grow very big and win the competition for you. Really large bulbs reaching 2.5 kg and 50 cm in circumference.
Onions have anti-bacterial and antiseptic properties, and are also believed to lower blood pressure. For best results sow the Mammoth Improved seeds from December - February indoors in good seed compost. Lightly cover the seeds, and make sure you do not overwater.
Can be sown outside from late March-April, directly into well-prepared soil. Germination takes up to 20 days at 15-20 Celsius.Prick out the seedlings and plant them into individual pots when large enough to handle. The best to grow on at a temperature of 15 - 20 Celsius.
Make sure that the bulb part of the plant is not covered with compost. Move the plants into a coldframe or unheated greenhouse, to acclimatize to outdoor conditions before planting out to final position from late April. Plant 50 - 60 cm apart in rich, fertile soil. Keep weed free and feed well to achive larger bulbs. Water in the summer during dry spells. When the leaves start to yellow, allow the onions a further two weeks, then lift and store in a cool dry place. Check out how to grow onions from seeds in details.