Genus of plants grevillea (Grevillea) is large enough and directly related to the Proteaceae family. It brings together about 370 plant species that can be found in nature in most cases in Australia. Only 5 species of this genus are found in other parts of the world, namely: on the islands of New Guinea, Sulawesi, and New Caledonia.
Plants of this genus are represented by evergreen creeping or erect shrubs, most of which are quite small (about half a meter). There are also quite large trees, the height of which can be more than 30 meters. On the surface of the cylindrical shoots there is a grayish and rather smooth bark. The alternate leaves are in most cases short-petiolate. The shape of the foliage can vary significantly from species to species. Tubular flowers can be either sludge or divisible. Despite their small size, they form rather large inflorescences in the form of brushes, since they have very long pistils.
At home, Grevillea is grown as an ornamental deciduous plant. Therefore, the most popular among flower growers is the large grevillea, as it has very spectacular, like openwork leaves. However, it is not so easy to grow it at home. She feels best in greenhouses with a special climate.
The plant needs a very bright, but diffused light at any time of the year. Daylight hours for him should last for 10 hours. In the event that it is cloudy outside, as well as in the autumn-winter period, the plant should be illuminated with special phytolamps.
In the warm season, a moderate temperature is needed from 19 to 24 degrees. In winter, he needs a coolness of 6 to 12 degrees.
From mid-spring to October, the month is watered abundantly. The potting medium should be slightly damp at all times. With the onset of the winter period, watering is much less frequent and less, however, care must be taken to ensure that the soil does not dry out completely.
For irrigation, use exclusively settled, soft water at room temperature.
High humidity is required. In this regard, it is recommended to spray the plant very often, and you can also use a household steam generator. When the humidity is too low, yellowing and drying of the foliage begins. And after that, the leaves begin to die off.
This plant is fast growing and quite large in size. Regular pruning, as well as frequent pinching of the tips of the stems, will help form a compact tree with a spectacular and very neat crown. It will also help contain the growth of large Grevillea.
The soil suitable for planting should be loose, slightly acidic and rich in nutrients. To create a suitable soil mixture, it is necessary to combine coniferous, leaf and peat soil, as well as river coarse sand in a ratio of 2: 1: 1: 0.5. It is also advised to add a little crushed charcoal or brick chips to the mixture. A good drainage layer is laid at the bottom, which will avoid stagnation of liquid in the soil.
They begin to feed the plant at the beginning of the spring, and end in the middle of the autumn period. Top dressing is carried out 2 times a month, using a complex fertilizer for deciduous indoor plants. In autumn and winter, fertilizers cannot be applied to the soil.
Until the age of three, the transplant is carried out once a year. Adult specimens are transplanted once every 2 or 3 years. If the plant is very large, then it should not be transplanted, but simply once a year the top layer of the substrate (up to the root system) is removed in the pot and replaced with a fresh one. This must be done carefully enough.
It can be propagated by semi-lignified cuttings or seeds.
Cuttings are carried out in the month of August. To do this, cut off the upper part of the shoots, which have 2 or 3 internodes. The slices are dipped in a rooting agent, and then planted in a container with moistened sand, and covered with a glass jar or a plastic bag cap. After rooting, they are transplanted into separate, not very large pots.
Seeds are sown in the last winter weeks. To do this, use low wide bowls, which are recommended to be placed in mini-greenhouses with bottom heating. Also, backlighting is required for germination.
Grevillea from seeds in 6 months | Grevillea from seeds
Harmful insects on such a plant can be seen extremely rarely.
This tree can get sick if it is improperly looked after. For example, if the humidity is too low, improper watering, high air temperature, and more.
This tree in natural conditions can reach a height of 14 meters. Short-petiolate, pinnate leaves with 25–35 broad-lanceolate cut segments, ranging in length from 15 to 20 centimeters. The obverse is colored deep green, it is smooth and has a distinct venation of the lobes. The seamy side has a slight pubescence. Horizontally arranged, axillary inflorescences are composed of orange flowers. In length, they reach 12 centimeters, and outwardly they are very similar to the longitudinal halves of the cylinders. This unusual shape of inflorescences is created by pistils directed in one direction, or rather, up.
It is presented in the form of a compact tree (height up to 5 meters) or a bush. The pinnate leaves reach 10 to 20 centimeters in length and consist of 4–11 entire narrow-lanceolate lobes. The smooth front side of the leaves is colored greenish-gray, and the pubescent back side is silver. Red-scarlet flowers are collected in axillary and apical inflorescences in the shape of a cylinder. In length, they reach from 5 to 10 centimeters. A distinctive feature of long pistils is their tips bent by a rather large hook. Thanks to them, the inflorescence looks like a curly brush.
It is presented in the form of a tall (1.5-1.8 meters) bush. Sessile green leaves have a narrow-lanceolate shape, almost acicular. The branches are literally covered with them. Bicolor flowers are white-red and are collected in apical few-flowered inflorescences having the shape of a brush.
This very large and tall shrub can reach 3 meters in height and width. Cirrus leaves have narrow, almost threadlike lobes. White flowers are collected in upright, dense, apical inflorescences, which are cylindrical in shape and reach about 25 centimeters in length.
Grevillea | Life in Adler
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The plant was first described at the beginning of the 19th century (in 1809) and the term "Grevillia" was chosen to define it. The flower owes this name to the Honorable Sir Charles Francis Greville (1749-1809), who was a renowned British antiquarian, botanist, collector and politician. Also, this prominent figure was a member of the Royal Society and the Linnaean Society of London, engaged in research in the classification of representatives of the flora of the planet.
This exotic inhabitant of the subtropical regions of the planet is an evergreen flowering plant that can also take both shrub and tree-like forms. Their height can vary from half a meter of shrub shoots, inclining to the soil surface, to thirty five meter giant trees in its homeland. However, in indoor conditions, the branches can reach only 2 meters in height, especially if the plant is kept cool and with sufficient illumination.
Grevillea leaf plates can grow both attached to the petioles and completely sessile. The outlines of the foliage are also quite diverse: it can be a simple leaf or deeply double pinnately dissected. The leaf edge is either smooth or curved, resembling large teeth. There is also venation along the surface, which varies from reticular to parallel arrangement. The color also varies greatly for each variety: it can be forest greenish, changing to greenish-bronze or even silver. Moreover, the shade of the foliage directly depends on the lighting conditions when growing grevillea. Due to the glossy surface on the leaf plates, the beauty of the plant is enhanced as they look radiant and very fresh. Some people compare the luxurious foliage of this specimen of flora to the fern frond (pinnately dissected leaves).
If the plant is grown in rooms, then flowering is observed quite rarely. Usually the flower is bisexual, with tubular outlines, in which the lobes of the perianth and the long column are twisted. The color of the petals of the buds can take on red, pinkish or yellow and orange-red hues. Inflorescences have racemose or bundle-like outlines, the number of flowers from which they are composed is also varied.
Because of its effective appearance, Grevillea is best grown as a tapeworm crop for large rooms, halls, lobbies, and the like. The most favorite variety among flower growers is the powerful Grevillea variety, which in its native Australian continent is called "silky oak", since the leaf lobes have a delicate pubescence. The growth rate of this "pinnate" beauty is very high, therefore, it is required to carry out a thorough pruning of the crown. According to the degree of complexity of care, the plant is medium-difficult, since during cultivation it will be necessary to provide special conditions for keeping during the dormant period and few growers will be able to maintain them.