Rooting the cuttings
Getting started -- Rinse the cuttings in water after receiving them. If the cut end of the cuttings appear moist, let them sit a day or 2 at room temperature so that the ends dry out. This will help prevent them from rotting. If there are leaves at the top of the cutting, leave them on and cover them with a baggie secured with a twist-tie.
Soil -- Use a loose, well-draining medium, such as 1 part perlite to 1 part sterilized potting soil or coir fiber. You may sterilize potting soil by placing it in a pan in an oven for 90 minutes at 150° F (72°C).
Pot size - Use a pot about 1-3 gallons (4-12 liters) in size, with drainage holes.
Planting - Bury about 1/2 to 2/3 of the cutting in the soil. The cuttings will be marked as to which end goes down. They seem to root a little better when placed diagonally. If you have rooting hormone or anti-fungal powder, you may put it on the cuttings, but this is not necessary.
Water the soil just enough so it is lightly moist throughout. Don't over-water it or the cutting may rot. I recommend using a moisture meter probe, so you can ensure that the soil doesn't get too wet.
Until they root, keep the pots at about 60° to 75° F (16-24°C). Avoid letting them get warmer than this. I recommend placing a minimum/maximum thermometer near the cuttings, since the temperature can vary in different parts of a room.
If the humidity is below 80%, cover the cuttings with a plastic bag (punch a small hole or 2 in it for fresh air). Keep the cuttings in a bright spot out of direct sun. Water as needed to keep the soil lightly moist.
After 4-6 weeks, gently tug on the cutting to see if it has rooted. Once it has rooted, remove the plastic bag (if you used one) and add some slow-release (pelleted) fertilizer. Once new foliage appears, you may increase the watering.
Once they have been growing for a month, you may give them some sun - but shade them from strong afternoon sun for another 2-3 months.
After 3 months of growth, you can expose them to a wider temperature range, but protect from frost.
Repot to a 5 gallon (20 liter) container when roots are growing in circles around the bottom of the pot.
If the plant grows too tall, you may prune the tip. Side shoots will then form along the stem.
Tips on growing older Babaco plants are here.
If you have any questions or problems, please contact me.
Have fun growing them!
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