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Screw tree: sun-loving houseplant
Screw tree: sun-loving houseplant

Video: Screw tree: sun-loving houseplant

Отличия серверных жестких дисков от десктопных
Video: Pandanus amaryllifolius Houseplant Care — 285 of 365 2023, February
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The screw tree (Pandanus) owes its name to the leaves arranged in a screw shape on the trunk. Contrary to its other names, screw palm or pandane, it does not belong to the trees or palm trees, but to the screw tree family. The screw tree is native to Africa, Southeast Asia, Madagascar and the Mascara Islands. With us, the Pandanus with its more than 600 different species is a popular houseplant.

Table of contents Table of contents screw tree: sun-loving houseplant

  • Growth of the screw tree
  • Pandanus leaves
  • Blossoms of the screw tree
  • Earth and location
  • Water and fertilize
  • Repotting
  • Cut the screw tree
  • Propagation
  • Dangers to the Pandanus

Table of contents Table of contents screw tree: sun-loving houseplant

  • Growth of the screw tree
  • Pandanus leaves
  • Blossoms of the screw tree
  • Earth and location
  • Water and fertilize
  • Repotting
  • Cut the screw tree
  • Propagation
  • Dangers to the Pandanus

Growth of the screw tree

The screw tree is an evergreen plant that, depending on the species, grows either as a single-stemmed or double-forked shrub or tree. Over time, the trunk becomes woody and the spiral screw thread can be seen better and better. The Pandanus often forms very handsome pedestal and aerial roots, which make it look more compact towards the bottom. In his home country, the screw tree grows into a remarkable tree, and as an indoor plant it grows to a maximum height of 200 centimeters.

Pandanus leaves

The leaves of the screw tree are thick, leathery, shiny and without a stem and grow in a leaf crust at the end of the trunk. They hang over, so that the plant resembles a palm tree - hence the name screw palm. The sword-shaped leaves can reach a considerable size of about one meter and form small, hard thorns on the outside and on the midrib.

Schraubenbaum
Schraubenbaum

The Pandanus forms a beautiful striped leaf color in a bright location.

Photo: iStock / kaew6566

How does the screw tree bloom?

Screw trees are single-sex, separate sexes. This means that the plant produces both female and male flowers - but not bisexual flowers (single-dwelling or non-separated sex).

Male and female flowers can be distinguished based on their growth: the male flower grows in a branched piston shape, the female in a simple piston shape. Since the pandanus is mostly pollinated by wind, birds and insects, you need to take a brush with your carpentry and help him with it - but it rarely flowers here. After successful pollination, the screw tree forms collective stone fruits. They are either divided into one or more chambers, in which there are many very small seeds. Some types of the screw tree form edible fruits, for example the Pandanus utilis.

Earth and location tips

In order to thrive optimally, the screw tree is planted in a slightly acidic, loosened mixture of potting soil, clay, peat and sand. The ideal pH of the substrate is between 5.5 and 6.5. Use a pot that is too big rather than too small as a planter - the tall plant needs a good hold. Or you can make friends with a support aid, otherwise the plant runs the risk of toppling over.

In addition to the right soil, the right location is also important for good growth. Try to place the screw tree in a place where it almost feels like home - very bright and warm. The more comfortable he feels, the more beautiful the sheet drawing will be. If the summer temperatures do not fall below 15 degrees Celsius at night, it is even possible to place the screw tree outdoors. It is only important here that it is slowly getting used to the other location or the sun. If the screw tree is not bright enough, the leaves remain uniformly dark green.

During the darker season, between October and March, you can store the screw tree in a sheltered place with a minimum temperature of 15 degrees Celsius - but you don't have to. If you choose winter quarters, the plant does not need as much water and less fertilizer over this period.

Schraubenbaum
Schraubenbaum

At their natural site, screw trees bear fruit.

Photo: iStock / SvenjaBurgwinkel

How often do you have to water and fertilize the screw tree?

The screw tree naturally grows near water. It is therefore important that he always has sufficient water available. Make sure that the bale of your pot never dries out, so it is always moist, but at the same time try to avoid waterlogging. This is easy to do with regular watering. You should also fertilize regularly in the growth phase. Simply add some green plant fertilizer to the watering can every two weeks. Stagnant or filtered water at room temperature is recommended as irrigation water. Make sure that you only water the soil and not the leaf axils of the screw tree. You can clean these and other parts of the dust a few times a year by showering them or wrapping them in spray can mist.

Repot a screw palm

Screw trees that grow in conventional potting soil need new soil every year for good development and must be repotted. Other substrates, such as peat, compact more slowly, so the contents of the tub do not have to be replaced quite as often. If the Pandanus is to continue growing, renew the soil every year and change to a slightly larger pot. If you want the screw tree to remain as big as it is, just replace the earth. So that the aerial roots can be rooted, make sure that you leave enough space between the stem and the edge of the pot. With these roots, the Pandanus gradually lifts out of the bucket - so add a little new soil every now and then.

So the cut succeeds

The screw tree is tough and can be trimmed in both old and young wood - the only parts of the Pandanus that cannot be cut back are the aerial roots. You can confidently cut back overgrown plants by half. So that the screw tree does not go wild, it is important to remove the dead parts and to nurture the plant. Around the trunk, the screw tree forms secondary shoots that can either be left standing - the screw tree grows in size - or cut off - the Pandanus' urge to grow diminishes and new plants can be grown.

Blätter des Schraubenbaums
Blätter des Schraubenbaums

The leaves of the screw tree explain its name: they are arranged helically around the trunk.

Photo: iStock / quangrapha

Propagation of the screw tree

The screw tree grows automatically by means of secondary shoots, called Kindel. So if you are no longer satisfied with a plant, you can simply cut off these shoots and pull new screw trees out of them. After cutting off, let the cut dry for a few hours and then simply put the shoots in the ground. Alternatively, you can place the shoots in a container filled with water and wait until roots have been planted. Blue or dark glass is particularly suitable as a container because it increases the rate of rooting.

Dangers to the Pandanus

Dry air is an enemy of the screw tree - spider mites are particularly fond of the pandanus and the leaf edges and leaf tips of the houseplant turn brown. You can easily remedy this by increasing the room humidity or placing the plant on a coaster filled with pebbles and water. If the screw tree is too wet and too cool, its roots will rot. In winter, mealybugs are often interested in the screw tree and can become a problem.

Schraubenbaum
Schraubenbaum

The fruit of the screw tree.

Photo: fotolia / Blue Sign

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