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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 provided on this page is based on research we have conducted about this plant in our nursery's library, from what we have found about it on reliable online sources, as well as from observations in our nursery of crops of this plant as well as of plants growing in the nursery's garden and those in other gardens. We will also incorporate comments received from others and welcome getting feedback from anyone who may have additional information, particularly if it includes cultural information that would aid others in growing Macrozamia johnsonii. |
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