Leaf slashing

Plants that do not have a leaf with a central midrib and lateral veins but possess a more netted veining are not easy to propagate from leaf cuttings. Certain plants, however, have leaf veins that are capable of generating a new plant, and these can be propagated by cutting through the veins of the leaf so that plantlet development is induced but the leaf itself remains entire. Because of the size of their leaves this technique is particularly suitable for varieties of Begonia rex.

Clean all tools and equipment thoroughly. Fill a seed tray with cuttings compost; then press it down to about fin below the rim. Water the seed tray thoroughly and allow to drain.

Remove a fully expanded leaf that is undamaged from the parent plant. Place the leaf upside down on a clean sheet of glass. Cut off the leaf-stalk flush with the leaf-blade, using a safety razor blade. Make a fin cut across a major vein, using the razor blade.

Repeat this until there is one cut every square inch all over the leaf.

Place the cut (or slashed) leaf, with its top side upwards, flat on to the surface of the cuttings compost in a seed tray. Pin the leaf down with a thin wire staple if it does not lie flat on the compost. Label the leaf cuttings clearly. Spray the seed tray with a fungicide to reduce the likelihood of rots, and cover with a sheet of glass.

Place in the light, which is essential for food production and so for plantlet development. Avoid direct sunlight, which may scorch the leaf. A closed case with bottom heat provides the best environment for a slashed leaf to propagate.

The rate at which plantlets develop will be dependent on the surrounding temperature: at 21°C/70°F, plantlets should appear in three to four weeks. Separate the new plants once they can be handled easily and pot on. Label and harden off gradually.

Begonia Cut Leaf Along Vein

4 Make a f in cut across a major vein. Repeat this every square inch.

5 Place the leaf top side up on the compost surface. Pin down with a wire staple.

6 Label the seed tray. Then spray with a fungicide such as Captan or Benlate.

Some plant» (hat respond to Iral «lathing iicKuni.i irx -and related species

Some plant» (hat respond to Iral «lathing iicKuni.i irx -and related species

Benlate Label

1 Fill a seed tray with some cuttings compost. Water well and allow to drain.

2 Remove a fully expanded leaf that is undamaged from the parent plant.

3 Place the leaf upside down on some glass. Cut off the leaf-stalk.

2 Remove a fully expanded leaf that is undamaged from the parent plant.

3 Place the leaf upside down on some glass. Cut off the leaf-stalk.

7 Cover with a sheet of clean glass. Place in a warm, shaded environment.

8 Leave the plantlets in their protected place when they first appear.

9 Separate the plantlets once they can be handled. Pot on and harden off.

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Responses

  • Saku
    What is a leaf slashing?
    6 years ago

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