Houseplants

Planting Laburnum - Instructions for field and tubs

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The laburnum is a poisonous, but nevertheless very pretty to look at shrub. If you want to plant it, you have several options.

© Alonbou - Fotolia.com If you are looking for an easy-care plant that enriches the gardening year with lush flowers, you cannot avoid the laburnum. The butterfly bloomer enchants with a sun-yellow bloom and shows itself - with regard to location and substrate - robust and undemanding. Therefore, the unusual poisonous plant is a frequent guest in gardens and parks. You can read about what is important when planting ornamental trees here.

Small plant description

The laburnum grows as a shrub or smaller tree and can reach heights of around five meters. The leaves are alternate and pinnate in three lines. In the end, the leaves, which are up to eight centimeters long, come to a head. The countless yellow flowers develop on racemose inflorescences. It is a characteristic butterfly flower with five petals. From the flowers, legumes reminiscent of beans develop, which contain the flat, dark brown seeds.

The plants were described by Philipp Conrad Fabricius in 1759 and divided into the genus Laburnum. This subfamily of the butterfly flower family contains the two representatives Common laburnum and Alpine laburnum, Of these two types, the Hybrid laburnum emerged.

Plant laburnum - find the right location

The choice of location does not pose any major problems for the hobby gardener. However, if you want to enjoy a lush bloom, you should choose a sunny location. In a warm and sunny place, the laburnum grows quickly bushy and forms a corresponding number of flowers.

Note: The plants will generally also thrive in the shade, but will develop fewer flowers.

When choosing a location, it should also be borne in mind that the plant can grow to heights of five meters and more. A unique position is advantageous because the plants also develop several meters in width.

Choose the ideal substrate

The laburnum should be planted in a warm soil. If the plant gets cold feet, it will acknowledge this with missing flowering. In this case, growth performance also generally decreases. A deep floor is not absolutely necessary. Laburnum also thrives on rocky surfaces. It is important that the soil is permeable and rich in nutrients. Calcareous substrates are also tolerated. The substrate can consist of ordinary garden soil. The soil can be enriched with compost and loosened up by adding sand.

Note: Longer dryness and waterlogging are not tolerated.

When to plant laburnum?

The ideal time to plant the laburnum is spring. If no more frosts are to be expected, the plant can be placed in the ground. Over the summer, the crop has enough time to develop stable roots and grow well. In general, it is possible to plant laburnum until autumn. The plant should definitely be in the ground by October at the latest. Otherwise there is a risk of frost. Since the plant cannot grow sufficiently until winter, the laburnum needs winter protection.

What should be considered when buying?

Use larger plants when buying. Golden rain of one meter in size is more robust and takes root more quickly. Smaller plants are particularly susceptible to snail feeding. The trees should already have several shoots.

Tip: Laburnum takes three growing seasons to speak of a fully grown plant.

Planting laburnum - step by step

  1. Select location
  2. Prepare the soil
  3. Dig out the planting hole
  4. Water the plant
  1. Insert the plant
  2. Close the planting hole
  3. Water the plant
After the location has been selected, the soil is loosened and roots, stones and weeds removed. The planting hole must be excavated at least twice the size of the root ball. While preparing the soil, the plant should be placed in a container filled with water so that the roots can get sufficient moisture. This usually happened when there were no more air bubbles rising to the surface from the vessel.

The planting hole should be about twice the size of the root ball. The plant is used carefully and the planting hole is filled with substrate. After planting, the laburnum is watered well. The substrate can be enriched with compost before planting. This provides a long-term organic fertilizer that ensures the supply of the plant in the first year of standing.

Laburnum can be used in many ways in the garden. In isolation, the shrub comes into its own particularly well, especially when it is in flower. Nice accents set underplants with rabbit bells or ribbon flowers. A firework of colors opens up when golden rain is planted next to snowball or lilac, and rose arches can also be planted with golden rain.

Laburnum as a container plant

Laburnum can also be cultivated in a bucket. However, this increases the maintenance effort. The cultivation of potted plants is generally more demanding than is the case with outdoor planting. While the plant requires little maintenance outdoors and is supplied with moisture via the roots, the laburnum in the bucket must be watered regularly. The supply of substrate in the planter is limited and the plant cannot get moisture from the deeper layers of the soil. The earth should not dry out. It is also important to ensure that no waterlogging occurs. The planter should have sufficient drainage holes for liquid. A drainage of gravel or potsherds ensures that the irrigation water can drain away better.

Tip: When planting containers, consider that the laburnum can reach a height of more than five meters and do not miss a regular pruning that is adapted to the individual site conditions.

The hobby gardener is also in demand for wintering. In the bucket, the laburnum is not hardy without restrictions, as the bucket can freeze through quickly. The plant should be provided with winter protection or, even better, spend the cold season in a frost-free room.

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Cultivate laburnum as bonsai

Laburnum can also be cultivated as a bonsai, and almost all sizes and styles are possible. Double tribes and forests in particular are decorative. Breeding as a cascade is less suitable. The bonsai should not dry out, nor should waterlogging occur. During the growing season, the sapling is given a fertilizer every 14 days. New shoots are cut back to a maximum of three buds. An annual repotting is recommended. The roots are shortened. The bonsai tends to burn leaves in summer. The flat bonsai pots are very vulnerable to frost, so the bonsai should spend the winter frost-free but cool in the house.

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