Norfolk pine is an evergreen coniferous tree native to Norfolk Island in the South Pacific. It is the tallest tree in the world, reaching up to 115 m (377 ft) in height. The tree is extensively cultivated as an ornamental plant in temperate climates, where it has become widely naturalized.
Related plant:
Norfolk Island Pine
About soil condition, Norfolk pine prefers well-drained, sandy soil. It is not tolerant of wet or poorly drained soils and will not grow well in clay. The tree also prefers a neutral to slightly acidic soil, with a pH of 6.0 to 7.0.
Similar to other pines, the Norfolk pine needs full sun to grow well. It is a fast-growing tree, so it will need lots of sun to reach its potential height. If you live in a warm climate, this pine can even grow in partial shade.
The temperature condition that is ideal for a Norfolk pine is one that is between 60 and 70 degrees Fahrenheit. This is a temperature range that is comfortable for humans, and it will also allow the tree to thrive. If the temperature gets too cold, the tree may become stressed and its growth may be stunted. If the temperature gets too hot, the tree may start to drop its needles.
Ideal humidity condition for this plant is between 40 and 50%. If the humidity drops below 30%, the plant will start to experience stress and may eventually die. Norfolk pines prefer to be watered regularly, and they will not tolerate being left in standing water. When watering, be sure to allow the soil to dry out slightly between waterings.
Discussing fertilizer, usually the plant 's leaves are the first area to show nutrient deficiencies. With the Norfolk pine, however, it is the roots that are first affected. If the roots are not getting the nutrients they need, the entire plant will suffer.
Pruning a Norfolk Pine is a simple process that can be done with a sharp knife or pruning shears. The goal is to remove any dead or dying branches, as well as any branches that are crossing or rubbing against each other. You can also prune Norfolk Pines to create a desired shape or size. Start by making cuts at a 45-degree angle, just above a node (where the leaves attach to the stem). Make sure to sterilize your tools before and after pruning to avoid spreading diseases.
Propagation of Norfolk pine is typically done through cuttings. The best time to take cuttings is in late spring or early summer when the plant is actively growing. Cuttings should be taken from healthy, new growth and should be about 4-6 inches long. Cuttings can be rooted in water or directly in potting mix. If rooting in water, be sure to change the water every few days to keep it fresh. Once roots have developed, the cuttings can be transplanted into pots.
Usually, the plant growth rate between 24 and 36 inches (60 and 90 cm) per year. However, some specimens have been know to grow up to 12 feet (3.6 m) in a single year. The average lifespan of a norfolk pine is 20 to 30 years, although some may live as long as 50 years. When grown in containers, norfolk pines are generally smaller, with a growth rate of 8 to 12 inches (20 to 30 cm) per year.
Common problems for this kind of plant are browning or yellowing leaves, drooping leaves, and needle loss. These problems can be caused by too little or too much water, pests, disease, or stress. To prevent these problems, water your norfolk pine regularly and keep it away from drafts. Check for pests and diseases regularly, and prune dead or damaged branches.
Source:
Norfolk Island Pine - ladybug.uconn.edu
Norfolk Island Pine | Oklahoma State University
Care of the Norfolk Island Pine | Horticulture and Home Pest News
