How to Replant Broken Orchid Stems

Written by bonnie grant
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How to Replant Broken Orchid Stems
Orchids require careful cultivation, but the amazing blooms are worth the effort. (Jupiterimages/ Images)

Orchid stems often break under the weight of the exotic blooms. The orchid is a slightly temperamental plant that needs warmth, even moisture and humidity, and plenty of food. Orchids grow almost everywhere on the globe but most are from Asia, Africa and tropical climates. Orchids are difficult to propagate from seed, and they have erratic germination habits and problems with damping off. A broken stem may re-root if propagated in proper media until it roots. This needs to be done in sterile conditions to prevent the introduction of bacteria or fungal spores.

Skill level:

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Things you need

  • Scalpel
  • Rubbing alcohol
  • Water
  • Liquid chlorine bleach
  • Sterilised glass
  • Flasked media
  • Distilled water
  • Pressure cooker
  • Tweezers
  • Agar
  • Small pan
  • Teaspoon measure
  • Spoon

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  1. 1

    Sterilise a scalpel in rubbing alcohol. Cut the end off the stem where it broke, using the sterilised scalpel. Make the cut 1 inch before and 1 inch after a growth node. Make several stem cuttings to increase your chances of success. Fill a sterilised glass with a 10 per cent bleach and water solution. Soak the stems for 15 minutes, agitating the solution occasionally.

  2. 2

    Put the flasked media into a pressure cooker filled with enough distilled water to cover the flasks. Let it cook for 20 minutes and then remove from heat and allow to cool naturally. These are the containers with the prepared food into which you will plant the stem pieces.

  3. 3

    Use tweezers to pull off the skinlike covering over the growth nodes. Cut 1/8 inch more off each end of the stem pieces. Put 1 level teaspoon of agar per flask into a pan. Add just enough water to thin it and cook on low to medium-low heat, stirring constantly until the agar is completely dissolved.

  4. 4

    Cool the agar slightly, then pour it into the containers to a depth of 1/2 inch per flask. Use the tweezers to immerse the ends of the stem pieces in the flasks. The agar gel will hold them upright. Put the lids on the flasks again. You should see swelling at the base in a week or two.

  5. 5

    Cut the plant off with a sterile scalpel when it reaches 1/4 inch high. Repeat the process of sterilising flasks and make fresh agar. Replant the new plants so they can grow roots. Keep the plantlets moist and in low light. Once there are signs of roots, gradually introduce the plants to light. The new orchids will be ready for the green house in 6 to 12 months. Your single stem has now produced numerous plants that are exact clones of the stem.

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