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| Category: Cycad |
| Family: Cycadaceae (Cycads) |
| Origin: Australia (Australasia) |
| Evergreen: Yes |
| Flower Color: NA |
| Bloomtime: Infrequent |
| Height: 10-12 feet |
| Width: 10-15 feet |
| Exposure: Sun or Shade |
| Summer Dry: Yes |
| Deer Tolerant: Yes |
| Winter Hardiness: 15-20° F |
| May be Poisonous (More Info): Yes |
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Macrozamia johnsonii (New South Wales Macrozamia) - A large-growing cycad with a rounded head of blue-green foliage on a stout trunk to 10 feet tall. It is the largest of the New South Wales Macrozamia but smaller than Macrozamia moorei, a species that this plant was once considered a form of and was called the "New South Wales form" or the "green form" of Macrozamia moorei . From the thick stout trunk this plant holds many 5 to 7 foot long blue-green leaves that rise erect and then strongly arch over with 120 to 220 leaflets that are flattened and not keeled as they are for Macrozamia moorei with leaflets that are 8 to 12 inches long in the middle of the leaf but reduced towards both ends with the basal leaves reduced to nearly spinelike and looking like a saw blade near the base. Unlike many other cycads, this plant will continually put on leaves instead of having flushes of leaves so it can look more like a palm with a full head of leaves. Plant in full sun to light shade in a well-drained soil and irrigate occasionally to infrequently. Hardy and evergreen to 20 °F. This species has a very restricted distribution in northern New South Wales where it is found growing in the mountainous areas near the coast by Grafton and up into the tablelands along the Great Dividing Range.
The information on this page is based on research conducted in our nursery library and from online sources as well as from observations made of this plant as it grows in our nursery, in the nursery's garden and in other gardens that we have observed it in. We also will incorporate comments received from others and always appreciate getting feedback of any kind from those who have additional information, particularly if this information is contrary to what we have written or includes additional cultural tips that might aid others in growing Macrozamia johnsonii.
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