Allium, in the same family as onion, garlic and chives, is planted for is ornamental flower. Some species of allium are cold-hardy as far north as U.S. Department of Agriculture zone 2. Bloom time, scent and colour depend on the species. Colours of allium include beige, blue, pink, white or yellow. Fall is the best time to plant allium bulbs.
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Things you need
Dig the hole 3 inches deep and twice the width of the bulb (or the width of the spade) to loosen the soil. The planting location should be sunny and well-drained.
Drop the bulb into the hole with the fibrous portion of the bulb facing down. The stem of the plant will emerge from the pointed top of the bulb. Cover the bulb with the soil removed from the hole and then water well. If planting more than one bulb, space the bulbs 6 to 8 inches apart.
Water every seven to 10 days if there is no rainfall. Continue to water until the first frost.
Tips and warnings
- Leave the foliage after allium blooms and continue regular watering. The foliage will provide nourishment to the bulb. The foliage can be cut back after it starts to turn yellow.
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