Norfolk Island Pine is difficult to propagate, but let that be a
Either take cuttings or propagate from seed. The best plants come from
seed or from tipshoots. Sideshoots are the easiest ones to remove without
damaging the mother plant, but they retain their horizontal growth and
don't form tops!
SEEDS: takes a long time
Sow seed thinly in a seedbox with sand or sandy soil in spring or fall.
Cover the seed with a 1/2 inch thick layer of soil, water well, and put
the box in a warm spot. Keep an eye on the seed to catch fungus attacks.
After germination, let the young plants grow for a year in the box. Then
they can be planted out in small pots and given a cool, light location.
When another year has passed, plant them into larger pots.
TIPSHOOTS: yield better plants
SIDSHOOTS: easiest without damaging mother
Propagating from tipshoot cuttings is best attempted by specialist
nurseries and the mother plant will not form a new top. Dip the cutting
in a hormone-rooting compound before being planted in sandy soil in pots.
Root formation is difficult, but can succeed if the cuttings are kept warm
and moist under glass or a plastic bag. When roods have formed, put the
plant in a light, sunny spot. The disadvantage of this method is that
branches cannot form tops.
Hope this helps. Take the challenge!