Downtoearthdigs
Answered on September 18, 2015
It really depends on the bulb, but generally the spring blooming types are best lifted and divided in fall once the foliage has died back (in warmer zones, they may even require chilling) while other types can be divided in spring. For more info, this article should help: https://www.gardeningknowhow.com/ornamental/bulbs/bgen/propagate-flower-bulbs.htm
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