Propagating Bulbs

Seasoned Gardener : Episode SGN-410 -- More Projects »
Late winter is the time to wake up those sleeping summer bulbs in preparation for spring planting. Some varieties need a headstart indoors so they are ready for transplanting outside.
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Dahlia tubers
Dahlia

  • Make sure all tubers are firm and healthy. Cut away any that are shriveled or soft to the touch.
  • Choose a pot that provides plenty of room for the tubers to grow.
  • Cover the tubers with two inches of lightweight, well-draining soil.
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Canna rhizome
Canna

  • Canna rhizomes usually contain a couple eyes, or new shoots, that emerge from each section of rhizome. You can divide the rhizome as long as each section has an eye attached to it.
  • Split the rhizome by breaking it apart with your hands.
  • Place each section in its own pot with lightweight, well-draining soil.
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Gladiola cormel
Gladiolas

  • Gladiolas have a root system called a corm. Cormels develop around the basal plate of the corm. Each cormel can be pulled from the corm and planted to create a new plant.
  • Insert cormels into a pot of soil, one inch apart with the pointed end up.

Place the bulbs in a sunny window and keep the soil moist. Once they've sprouted, they're ready to be transplanted into the garden.