· Brent Wilson's Answer
· Hi Nieci,
You can propagate Silverthorn Eleagnus by seed or by soft or hardwood cuttings. You'll probably have the most success with hardwood cuttings. Here's some instructions for indoor propagation by hardwood dormant cuttings:
The best time to take cuttings is late winter, when the plant is dormant. At this time take 8 to 10 inch long cuttings from the top of the branches, making your cuts at a 45 degree angle across the stem to help with water absorption. You want to make sure that the cutting has at least three leaf buds on it.
The use a sharp knife to remove about a 1 to 1.5 inch section of the outer bark from the base of the cutting.
Then dip the cutting in some 0.3% IBA rooting hormone powder and shake the cutting a little just to remove any excess hormone powder.
Stick the lower half of the cutting into an 4 to 6-inch nursery container filled with a mix of equal parts perlite, sharp sand and coir.
Place the potted cutting on a propagation mat set to 70 to 75 degrees F under bright light with little to no direct sun exposure.
Water the cutting with 1/2 cup of water, whenever the rooting medium dries out, at a depth of 1 1/2 to 2 inches.
Mist the foliage three times daily with a plant mister or automated misting system to keep it hydrated and reduce excess moisture loss from transpiration.
Start checking the cutting to see if it has rooted after about 8 weeks by gently trying to pull the cutting out of the rooting medium. If it won't come loose then roots have developed.
One week after the cutting has rooted well, transplant it into a 1-gallon size nursery container filled with sterile, well-draining premium potting mix. Keep the plant outdoors in a partially shaded spot with good air circulation and bright light for at least two months before planting it in your garden.
Hope this info is helpful. Let us know if you have any further questions.