How to Grow Metrosideros Excelsa - Plant Care & Tips

By NorwichGardener Team   /   2024

Metrosideros excelsa is a species of flowering plant in the myrtle family, Myrtaceae. endemic to new zealand, it is an evergreen tree with a spreading canopy and crimson flowers. it is commonly known as the New Zealand red pine, pohutukawa, or iron tree.

How to Grow Metrosideros Excelsa - Plant Care & Tips

Popular name

  • New Zealand Christmas Tree
  • Southern Rata
  • Pohutukawa
  • New Zealand Oak
  • Red Gum

Common Knowledge

  • Metrosideros excelsa is a tropical evergreen tree native to Polynesia.
  • It is also known as the 'red-flowering bottle tree', 'Red Tree', and 'Christmas Tree'.
  • It can grow up to 30 m tall.
  • The leaves are dark green and leathery, with a toothed margin.
  • The flowers are crimson, borne in clusters at the ends of the branches.
  • The fruit is a dry capsule, containing numerous small seeds.
  • The tree is widely planted as an ornamental tree in tropical and subtropical regions.
  • It is also used for reforestation of degraded lands.
  • The wood is hard and durable, and is used in construction and furniture making.
  • The tree is also a source of nectar, which is harvested to make honey.

Related plant:
Metrosideros

Growing Steps

  1. For metrosideros excelsa, first step is to find a suitable location. The site should be in full sun and have well-drained soil.
  2. If you are growing metrosideros excelsa from seed, then sow the seeds in a seed tray filled with moistened potting mix.
  3. Keep the seed tray in a warm place until the seeds germinate.
  4. Once the seedlings are large enough to handle, transplant them into individual pots filled with well-drained potting mix.
  5. Grow the metrosideros excelsa seedlings in pots for several months before planting them out in their permanent location.
  6. When transplanting metrosideros excelsa, dig a hole that is twice as wide and deep as the pot the plant is in.
  7. Place the plant in the hole and backfill with soil, tamping down gently.
  8. Water the plant well.
  9. Fertilize metrosideros excelsa every few months with a balanced fertilizer.
  10. Once established, metrosideros excelsa is relatively drought tolerant. However, during extended periods of dry weather, water the plants deeply to keep them from going into stress.

Considering the Soil

About soil condition, The Metrosideros Excelsa, or Pohutukawa tree, is an evergreen that is endemic to New Zealand. It is commonly found along the coasts, and requires well-drained, acidic soil to thrive. Pohutukawa are salt-tolerant and can grow in poor soil, as long as it is well-drained. They are also drought-tolerant, but will not tolerate waterlogged conditions.

Light condition

Similar to other plants, the sun is essential to the growth of the Metrosideros excelsa. The sun provides the energy needed for the plant to create its own food. The leaves of the Metrosideros excelsa are specially adapted to absorb sunlight. The more sun the plant gets, the more energy it has to grow.

Good Temperature

The temperature condition of the Metrosideros excelsa is tropical. The tree is native to the Hawaiian Islands and other Pacific islands. It is a member of the family Myrtaceae. The tree grows to a height of 30 meters (100 feet). The leaves are oblong, and the flowers are white. The fruit is a red, fleshy drupe.

Humidity Aspect

Ideal humidity condition for this plant would be 50%, though it can survive in conditions as low as 35%. It grows best in moist, well-drained soil that is high in organic matter. Avoid overwatering, as this can lead to root rot.

Fertilizer Requirement

For the fertilizer, this kind of plant prefers something that is high in phosphorus. This can be in the form of bone meal or even just a regular fertilizer that is high in phosphorus. As for the roots, they need to be kept moist but not soggy. If the roots start to rot, then the plant will not be able to survive.

About light

Pruning is an important part of keeping your Metrosideros excelsa healthy and looking its best. This native New Zealand tree can grow to over 30 metres tall, with a spread of up to 20 metres, so pruning is often necessary to keep it under control. It is best to prune in late winter or early spring, before the tree starts to produce new growth. To prune Metrosideros excelsa, you will need a sharp pair of pruning shears. Start by removing any dead or diseased branches. Then, cut back any branches that are rubbing against each other or growing in an undesirable direction. Finally, trim back any branches that are longer than the others, to create a more balanced shape.

The Propagation

Propagation is by seed, which is easily collected from the fruits, or by rooting semi-ripe cuttings. The fruits are quite large, up to 5 cm long, and contain many small seeds. The seeds need to be scarified before planting, and the cuttings should be taken from the current season's growth.

Growth Speed

Usually, the plant growth rate in their first year is between 30 and 50 cm. However, they may grow up to 2 m in their first year if they are in an area with very good conditions for growth. The documents show that the average height of a metrosideros excelsa at 20 years is about 15 m, with a range from 5 m to 30 m.

Basic Problems

Common problems for this kind of plant are that the leaves may turn yellow and fall off, and the plant may not produce any new growth. Yellowing leaves can be a sign of too much water or too little light. If the plant is not receiving enough light, it will not produce new growth.

Tips on Growing

  • Remember to water your plant regularly, as it will need a lot of water to stay healthy and thrive.
  • Place your plant in an area where it will receive plenty of bright, indirect sunlight.
  • Be sure to fertilize your plant on a regular basis, using a high-quality fertilizer formulated for use on tropical plants.
  • Prune your plant regularly to encourage new growth and help keep it looking its best.
  • Keep an eye out for pests or diseases that could potentially harm your plant, and take quick action to address any problems that arise.
  • If you live in an area with a lot of wind, you may need to stake your plant to help prevent it from toppling over.
  • Keep the root system of your plant healthy by periodically repotting it into a larger pot or container.
  • Make sure the soil in which your plant is growing stays moist, but not soggy,

Substitution

  • Metrosideros excelsa var. discolor (DC.) G.Forst.
  • Metrosideros excelsa var. excelsa (Forst. f.) V.V.D.Schenk
  • Metrosideros excelsa var. microphylla (Vahl) A.Rich.
  • Metrosideros excelsa var. microphylla (Vahl) G.Forst.
  • Metrosideros excelsa var. microphylla (Vahl) V.V.D.Schenk
  • Metrosideros excelsa var. pedicellata (Petrie) A.Rich.
  • Metrosideros excelsa var. pedunculata (Poir.) A.Rich.
  • Metrosideros excelsa var. pedunculoides Petrie
  • Metrosideros excelsa var

Source:
Metrosideros excelsa (Myrtaceae), pohutukawa
Metrosideros excelsa MYRTACEAE - APSA - ANU
Metrosideros floribunda [Metrosideros excelsa], 1869 | HOLLIS for

Richelle Author Photo
Reviewed & Published by Richelle
Submitted by our contributor
Trees Category