Which bulbs can I plant outside?
Since spring-flowering bulbs can easily withstand even a fairly harsh winter, almost all of them can be planted outside. They even need a cold period in order to flower. The exceptions are hippeastrum (amaryllis) varieties and narcissus “paperwhite”. ...FAQ
Harvest time or the autumn is the ideal time to plant crocuses, narcissus, tulips and other spring-flowering bulbous plants. It is amazing to see such splendid flowers appear from these apparently dry bulbs, every year.