With its extravagant look, the zigzag shrub is a real eye-catcher in the home and garden. The popular tub plant is especially popular for its twisted branches and blue-silver leaves. What you should consider when caring for zigzag shrub in the fall and winter, we tell you in the article.
Table of Contents
- Zigzag shrub care in the cold season.
- Corokia in autumn: is the zigzag shrub hardy?
- Zigzag shrub care in autumn: which are the suitable planting partners?
- What are the requirements of the tub plant in the location?
- How often should you water and fertilize the shrub?
- How tall will the shrub grow? Can it be shortened?
- When should the ornamental shrub be pruned?
- Should the shrub be repotted in autumn?
- What soil to use for the ornamental shrub?
- Zigzag shrub care: when to overwinter?
Zigzag shrub care in the cold season
Corokia cotoneaster, or the zigzag shrub, is an ornamental evergreen shrub. Originally native to Australia, in recent years it has been appearing more and more often in the assortment of European garden centers. It is popular for its typical zigzag branches and gray-green leaves. In its native country it grows in dry areas and has perfectly adapted to the climate.
In this country, it is grown as a container plant and can be staged both as a soloist and in combination with other plants in a pot. However, proper care is crucial for the plant to feel comfortable and form its small flowers in early summer.
Corokia in autumn: is the zigzag shrub hardy?
The zigzag shrub is not hardy and cannot spend the cold season outside. However, it can stay outdoors through the summer and fall before permafrost sets in. Around the end of October, when temperatures fall below 0 degrees Celsius more often, you can repot the shrub and bring it to winter quarters.
Zigzag shrub care in autumn: what are the appropriate planting partners?
It looks especially beautiful in combination with autumn flowers such as asters and chrysanthemums, and other foliage ornamental plants. Grasses, which turn bright colors in autumn, are also popular planting partners.
What are the requirements of the tub plant in the location?
In summer, the zigzag shrub thrives best in partial shade. In autumn, however, it has no special conditions at the site and can also stand in full sun. The most important thing is to protect it from strong wind and rain. It feels best on the covered terrace, in front of the house wall.
How often should you water and fertilize the shrub?
The shrub can well tolerate both moderately moist and dry soil. Only waterlogging it can not thrive: the roots rot and the plant dies. Therefore, it is advisable to let the soil dry a little before watering it again. In late autumn, when it moves into the winter quarters, you can additionally reduce the watering. Water the container plant only with decalcified water.
During the growth period in spring, you can fertilize the woody plant once a month. It is best to provide it with slow-release fertilizer to promote growth and flowering . Then stop fertilizing during the flowering period, otherwise the plant will lose all its flowers.
How tall will the woody plant grow? Can it be shortened?
In Australia, the woody plant is very weak-growing and it can take a long time for it to reach its maximum growth height of 2 meters. If the shrub becomes too tall, you can gradually shorten its shoots.
When should you cut the ornamental shrub?
The ornamental shrub tolerates even severe pruning. However, this should be done after the end of flowering, in late summer and early autumn. In the process, the shrub is brought into the desired shape. In September, you can also perform a maintenance pruning and remove all diseased or dead parts of the plant.
By the way, you can also grow the shrub as a “bonsai tree”, as long as you bring it into the desired shape and
Should you repot the shrub in the fall?
The ornamental shrub is repotted only as a young plant, in the first 2 – 3 years annually. This is best done in early autumn. At the same time, the soil is also replaced. Older plants need to be repotted every 2 – 3 years. As already mentioned, the shrub grows slowly.
Be very careful when transplanting, because the zigzag shrub has very delicate roots. If you damage them, the plant will not be able to absorb enough nutrients through the water. Even more so, damaged roots are entry paws for diseases and pests.
What soil to take for the ornamental shrub?
The ornamental shrub prefers a soil with high sand content and good permeability. As for the pH of the soil, the ornamental shrub has no special requirements. The main thing is that the substrate is permeable and rich in nutrients.
Zigzag shrub care: when to overwinter?
When temperatures fall below 2 degrees Celsius, you should bring the ornamental shrub to the winter quarters. Optimally, the temperatures there should vary between 2 and 15 degrees Celsius. If they fall below 7 degrees Celsius, then put a layer of mulch on the root zone and place the tub on a polystyrene sheet. Wrap the tub in fleece to protect the roots from the cold. The shrub should spend the winter in a bright place in the winter garden or in an unheated room.
Before you bring the shrub indoors, check it for diseases and pests. During the dormant period in winter, it needs less frequent watering and no fertilizer. Only in the spring you can water it again regularly and provide it with slow-release fertilizer.