16th April 2015 Vegetative Propagation Masterclass

Coincides with Collecting and Striking Cuttings handout.

Photo 1: Sam showing new plants struck from cuttings.

Mallet Cutting
Photo 2: Demonstration of a mallet cutting on Berberis
Mallet cutting is usually done on plants like Berberis or Mahonia. This cutting retains a piece of the old previous years wood (the mallet part) to help prevent rotting.

Photo 3: Good root systems from cuttings

Like other succulents Kalanchoe beharensis - the one that can have big velvety leaves - can produce from a leaf cutting with stem still attached, and it is best to hang them and wait from them to callous before putting them into a media to root. They can form plantlets on their leaves (on the leaf margin area), some Kalanchoe produce them when under stress, whilst some spontaneously produce them anyway.

Sam also showed us scaling of a bulb. This is usually done with things like lilies.

Photo 4: Removing soil off lily bulb (this is not the best time of year - it was just to help demonstrate scaling.
Instructions from the RHS website:

    •    Lift and clean a mature, virus-free lily bulb in late summer or early autumn
    •    Discard any damaged outer scales
    •    Snap off a few scales from the bulb as close as possible to the base
    •    Place in a plastic bag with a 50:50 mix of slightly damp peat-substitute and perlite
    •    Shake the bag and fill with air before sealing and labelling
    •    Place in a warm (21°C/70°F), dark place for six weeks
    •    Some lilies, such as Lilium martagon, need a further six weeks at 5°C (41°F)
    •    When bulblets appear at the base of the scales, pot them on individually, covered with their own depth of compost
    •    If the scales have gone soft, remove them from the bulblets before potting on. If the scales are still firm, or have roots coming from their base, leave them attached to the bulblets.

Photo 5: Separate scales.


Here is also a video specifically for scaling a lily: 
https://www.youtube.com/watch?v=-b7Oz9PWca8

Also link RHS website for other ways to propagate bulbs:
https://www.rhs.org.uk/advice/profile?PID=101