Wednesday, September 23, 2015

Propagating Chrysanthemums

Chrysanthemums can be propagated from seeds, cuttings, or plant division. Some chrysanthemum hybrids are patented and cannot be propagated without permission. This is usually indicated on the plant label.
Chrysanthemums actually like to be divided – the new clumps grow better than old, crowded ones. After the last spring frost when shoots are 1”- 3” tall, dig them up and carefully pull or cut apart. Throw away any half-dead or overly woody parts, and plant only the healthy divisions. Add a source of phosphorus to the planting hole, along with organic matter. Ideally, divide chrysanthemums every 3-5 years and relocate to reduce disease.

To propagate from cuttings, snip off a piece about 4”- 6” long, and remove the leaves on the bottom half. Dip in rooting hormone and insert about 1” into vermiculite, sand, or sphagnum moss. Create your own mini-greenhouse using a wire frame and plastic wrap, and place the plants under bright light (but not sunlight) until rooted.

To grow from seed, sow at least 2 months before first frost, or start indoors over the winter. The planting medium should be kept at 70-75 degrees, and seeds should germinate in 1-3 weeks.

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