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Ironwood tree

Metrosideros thomasii is an exotic tree / shrub, originally from New Zealand.
There he can grow up to 3 to 5 meters high and more than 20 years old. Is also known under the name ironwood tree.
The bloom is amazing, fire-red (crimson) flowers adorn the bush from the end of spring until the summer. Plant is evergreen in winter. The leaves are gray / green in color. As a young plant it is a shrub, but as they grow older they grow on a short trunk and then branch in an umbrella shape.

The plant may be given liquid fertilizer during flowering, once a week is sufficient. Keeping slightly moist is sufficient, even older plants are fairly drought tolerant for once. A sunny warm place is ideal for the Metrosideros thomasii. The ironwood tree also tolerates pruning well, this is best done after flowering and so you keep the plant in the desired shape and height.

After flowering, restrained with fertilization, once a month a small amount is sufficient. Do not administer fertilizer in the winter.
By winter, the plant will cool over winter at a temperature above + 2ºC. In mid-May the Metrosideros can go outside and it can shine on your terrace or balcony again.
Winter hardness zone 10b (+ 2ºC).

  • Category Outdoor flowering plants
  • Genus Metrosideros
  • Species collina "thomasii"
  • Families Myrtaceae
  • Habit Shrub
  • Climatic Zones Sub-tropical, USDA 10 b (Southern Italy and islands)
  • Leaves Evergreen
  • Flower Corymb
  • Geographical Area of Origin Oceania
  • Flowering and Fruiting Period June / May / April / March
  • Form Grown as shrub / bush
  • Colore Fiori Giallo   Rosso
  • Colore Foglie Verde   Grigio
  • Colore Frutti Marrone
  • Favorite soil Sub-acid / medium acid / Middle-Dough / Medium soil
  • Water needs Medium
  • Light Exposure Full light / Full sun / Medium shade / Half shade
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