- 1). Separate a single young plant from the seedling pot. Take care when handling not to damage the roots. Some varieties may tolerate a gentle trimming of the root and top to help encourage growth.
- 2). Prepare the soil well with a rich compost and turn it well so it is easy for the roots to establish themselves. Allium should be planted about three to six inches deep, depending on the variety, and about six inches apart.
- 3). Water the allium after transplanting, keeping the soil fairly moist but not soaking wet so the plants do not rot.
- 4). Keep weeds out of the allium bed as the onions do not compete well with other plants. Mulching lightly with straw or leaf mulch can help keep weed growth down. Mulch also will keep the soil moist, which helps alliums grow.
- 5). Consider "hilling" allium plants once they start growing well. "Hilling" involves moving the soil into a little hill around the base of the plants when they have reached about 8 inches high. Some varieties, such as leeks, may produce a richer flavor and more tender plant if this is done.
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