Question
when can i propagate schefflera?.

Answer
Hello Mahmood and thank you for your question!  You may propagate schefflera in a number of ways, and at any time of the year.  The two easiest and most successful ways are by semi-hardwood cuttings and by seeds.

If your schefflera fruits, extract the seeds from the fleshy pulp when the fruit is ripe. Don't allow the seeds to dry out - in fact - it's best to sow them immediately at 21 degrees C (or 70 degrees F).

Semi-hardwood cuttings are quite easy to do.  Find a schefflera cane that's got new growth at the end and harder to bend, older growth under the new growth (which will bend easily). Make your cutting  from the part of a cane where the soft new wood meets the hardening wood, and just below a leaf node at an angle (the angle gives the cutting more area to set roots and it helps you to remember which end of the cane is the bottom.) The cutting can be 12-20cm long. cut off all leaves that are toward the bottom of the cane.

Now make two 2cm straight scrapes or wounds on the bottom part of the cutting, and scrape them opposite each other. The scrapes should be light, only until you see the slightly paler area under the green outer layer of the stem. This speeds up and increases rooting.

Get a clear container, whatever size you need depending on how many cuttings you'll be taking.  Some people use clear polythene cups and put a drainage hole in the bottom.  Fill your container with soft, childrens play sand. Moisten it but don't make it soaking wet with the cleanest water you have available.  Now use a chopstick or similar item to poke holes in the moist sand. One hole for each cutting, and they can be quite close together.

If you choose to use a rooting hormone, dip your cutting in it (follow the hormone's directions) and stick your cutting in the moist sand. Better yet, instead of a chemical rooting hormone, you can make a willow tea by taking a few pencil thick willow branches and cutting them into 1 inch pieces.  Then, soak them overnight in boiling water.  In the morning it will have cooled and you can strain out the willow cuttings.  All species of willow have natural plant growth stimulating hormones. Just soak the bottom end of your cuttings in this tea for a day or two and then 'stick' them. When you've stuck all of your cuttings, very gently pour water around them to settle them into their holes. Tap the side of the container so that the water drains out well and the cutting settle into the sand.

Now cover the container with clear or opaque white plastic wrap.  Do not put the container in strong, direct light - it will cook the cuttings- but in bright diffused light. Warmth is more important in cuttings than is light, so they should be kept in a warm area, ideally 23-28 C degrees.  Make certain the plastic covering is tight or the cuttings will dry out. Most people just put a rubberband around the cup & plastic.

The cuttings should start sending out small roots anywhere from 2 1/2 to 4 weeks. Sometimes it can take much longer, even 2-5 months depending on the species of schefflera, but those are very unusual.  When the cuttings are rooted, acclimate them or harden them off slowly.  Little by little partially remove the plastic covering for a couple of hours each day going longer until they show increased growth and don't need the high humidity.  Gently pot them up in a good potting mix and feed them 1/4 - 1/2 strength fertilizer once weekly.  

I hope this helps and feel free to let me know if you have any further questions.
Best wishes,
Eirinn