At this point, it can be transplanted into its permanent location in the garden, or repotted to a larger container.Ĭuttings can also be stood up in a glass filled with a couple inches of cool water to root, set in indirect light. This should happen within a few weeks, and serves as a good sign that the cutting has rooted. Water regularly until new growth appears. To root cuttings in soil, stick the cut end into a four-inch container filled with potting mix and set it in a warm location that receives indirect or filtered light. Remove the lower leaves from the cutting, leaving the top two to four intact. When new growth appears in the spring, you can select the top three to four inches of a stem and cut at an angle just below a leaf node. You can learn more about how to divide perennials in our guide. Water after replanting and continue to water regularly until established. You can also dig up the entire plant, divide it into chunks, and then replant each section directly into the garden or in containers. If you have established plants available, divisions are probably the easiest and quickest method of propagating new plants and these can be taken at any time during the growing season, though it’s best to avoid dividing plants in the heat of summer.įind a section of an established plant with a healthy and mature root system, slice vertically with a garden spade to cut it away from the rest of the plant, and carefully dig it up. Some, such as Faassen’s catmint, are sterile and can only be propagated by division or from cuttings. It is important to note that not all nepeta species can be started from seed. Water lightly and keep moist until sprouts appear, in two to three weeks. Sprinkle seeds on top, barely covering since light aids germination for these plants. Prepare a garden bed or container with garden soil mixed with an inch of organic matter. You can improve germination by cold stratifying seeds in the freezer overnight and then soaking them in water for 12 to 24 hours prior to planting. You can also direct sow seeds outside before the first frost of fall or in spring after last frost. Keep moist until seedlings appear in two to three weeks and then place the pots under bright light until they develop at least two sets of true leaves. Fill three- or four-inch pots with potting mix and press seeds into the soil, barely covering. You can start seeds indoors four to eight weeks before the last frost. Nepeta plants grow and spread easily, and are very easy to propagate in a number of different ways. Plants also contain a compound called nepetalactone, a volatile oil that provokes a neurological response in cats, causing them to go temporarily nuts.
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