Hortensia (Hydrangea) is a genus of flowering plants in the Hortensia family. This genus includes about 80 species, and is represented by shrubs and small trees. Under natural conditions this plant is found in South and North America, Japan, China and other countries of South and East Asia. This plant was named after one of the princesses of the Holy Roman Empire. And botanical systematists called it "hydrangea," which translates from the ancient Greek as "vessel of water.
" This is due to the fact that the plant is very water-loving.
In the room culture of European countries hydrangea appeared in 1820. Later it was cultivated in the open air. As soon as hydrangea began to be cultivated by florists and gardeners, specialists began to breed. Thanks to them a lot of varieties and varieties were born.
Today, not only in the garden but also in a pot on the terrace, veranda or balcony, this beautifully flowering plant can be found.
- Blooming. It begins in April and ends in November.
- Brightness. The light should be bright, but at the same time scattered.
It is sufficient to place the bush near a south-facing window (at a distance of 200-300 cm).
- Temperature regime. During the growing season, about 20 degrees, and during the dormant period, from 7 to 10 degrees.
- Pouring. During the summer months, bushes need abundant, frequent watering.
During the spring and fall period, water more infrequently and moderately. During the dormancy period moisten the soil rarely and sparingly.
- Moisture. Needs increased humidity in the air. On hot days, the bush should be moistened as often as possible with a sprayer.
- Fertilizer. Fertilizing is carried out in the period - February-October. For this purpose, a mineral complex for flowering plants (heather, azaleas and rhododendrons) is used, and the fertilizer is applied to the soil twice a month. In winter the plant does not need any fertiliser.
- Dormant period.
Observed in December and January.
- Potting. It is carried out only for room hydrangea every year, with a life span of 3 to 4 years.
- Trimming. In the fall, when the bushes are in bloom, weakened stems should be trimmed, and the powerful shoots should be shortened by ½ of the length.
With the onset of spring, cut out any weak stems that have been greatly elongated during the dormancy period.
- Raising. By cuttings, bush division, and seed.
- Pests. Spider mites and aphids.
- Diseases. Peronosporosis and gray rot.
Peculiarities of house hydrangea
Home hydrangea is a perennial semi-shrub. Its large, suproposed leaf plates are ovate in shape and have a serrated edge. They are 10-15 centimeters long.
Its rather large, spherical inflorescences are about 35 centimeters across. They are shaped like a shield, an umbrella or a brush, with two types of flowers: small fruiting ones in the center and larger sterile ones on the edges. This plant is unique in that the color of its inflorescences has a direct dependence on the hydrogen index of the soil on which the bush is growing:
- acid soil - bluish color;
- neutral - cream or white color;
- alkaline - pink or lilac.
The flowers have colorless petals, but their sepals are richly colored, which makes the inflorescences ornamental. The fruit is a multiseeded boll.
The plant can reach a height of up to 100 cm when grown indoors.
Hortensia indoor care at home
Hortensia care at home
Hortensia grown in indoor culture can please florist with abundant and long blooming, but only if optimal growth conditions are created for it.
Hortensia need a lot of free space and also need quite a lot of light. However, the shrub should not be exposed to direct sunlight. For example, it can be placed 2-3 meters away from a south-facing window.
The plant feels best at about 20 degrees. Protect it from sudden temperature changes and draughts. When the shrub blossoms, it will begin its resting period. At this time it is placed in a dark place, where the air temperature is kept at 7-10 degrees. The bush should be there until the buds begin to awaken in February.
After that, it is returned to its usual place. This overwintering allows the hydrangea to quickly regain its strength. If left to overwinter in its natural environment, it will not flower again for another year.
When cultivating Hydrangeas, you should pay particular attention to watering. It must be systematic and abundant, as this plant is very water-loving.
In summer the soil in the pot is moistened abundantly and quite often, and in spring and autumn - moderately. In the cool dark winter the bush is watered only to prevent complete drying out of the ground ball.
Suitable water for moistening the substrate should be filtered, well-drained or melted. Rainwater can also be used, but only if you live in an environmentally friendly place. Don't forget to water the shrub once every 30 days with water mixed with lemon juice (5 drops of juice for every 1 litre of water).
So choose a place away from working heating units and humidify it systematically with a sprayer.
Hortensia must be nourished during the vegetation period with a frequency of once every 15 days. Mineral complexes for flowering plants (rhododendrons, heather and azaleas) are used for this purpose. The first fertilization is carried out in February, after the young shoots appear on the bush. During the winter time to make fertilizers in the substrate can not.
For a single pot bush was multicolored, florists on one side of the container to make a little lime in the soil mixture, making the inflorescences turn lilac or pink, and on the other - alum potassium (4-5 alum per 1 liter of water) or iron salts, then bracts will be colored in a bluish tint. Remember, however, that bracts grow creamy or white in a neutral substrate.
Home Hydrangea must be trimmed. This procedure is done twice a year. In the autumn all weakened stems are cut out from the flowering bush at the root, and the strong shoots should be shortened by ½ of their length.
In the spring time, all elongated weak stems are cut out from the bush.
Home Hydrangeas can live no more than three or four years, after which a new bush will have to be planted. However, it needs to be replanted regularly, once a year.
Substrate must be saturated with nutrients. Its approximate composition: sand, sod and leaf soil (1:3:3).
A container for planting should be taken large and wide, the fact is that the root system of this culture is located horizontally.
To ensure that the hydrangea experienced minimal stress during transplanting, it is recommended to carry out the method of transplanting. Also, when preparing the container, be sure to make a good layer of drainage at the bottom. When the bush will be transplanted into a new pot, it is necessary to carefully fill all the existing voids with new soil mixture. Make sure that the root neck of the bush is level with the surface of the substrate after transplanting.
The transplanted bush is watered, and when the moisture has been absorbed into the substrate, it is recommended to mulch the surface with peat. This will help avoid excessively rapid evaporation of moisture from the soil mixture.
How to properly transplant an indoor Hydrangea. Transplanting Hydrangeas at home.
The propagation of room hydrangeas by cuttings is the easiest and highly effective method of all possible.
This is why this method of propagation is the most popular among flower growers. The best time to make cuttings is January or February. If the cuttings are rooted in this period, the following autumn they will form a multi-stemmed bush consisting of three or four stems. If the cuttings are planted in March or April, you will have a one-stem bush.
For cutting cuttings, it is advisable to use root shoots.
The cutting should be 70-80mm long and can have up to 3 internodes. Remove all leaf plates from the lower part of the cuttings. The leaves in the upper part should be shortened by ½ if they are large and by 1/3 if they are small.
The lower part of the scrap is treated with a product that stimulates root growth. It is then planted for rooting in a mixture of sand and peat.
For rooting to be successful, the cuttings are placed in a well-lit place, the humidity should be 75 to 80%, and the temperature should be 18 to 20 degrees. To maintain the necessary microclimate, the cuttings from above are covered with a transparent cap (e.g., a glass jar). Do not forget to open the cover for a while every day.
Make sure that the soil mixture is always a little damp. The cutting should have roots after 20-30 days. After that it can be planted in a permanent pot which can be up to 70-90mm across.
✅Hortensia ! PROPAGATION BY CUTTINGS ! Planting and rooting cuttings
Growing from seed
Hortensia can be grown from seed if you wish, and they should be sown in the last days of February. Take a pot and fill it with a mixture of peat, sand, humus, sod and leaf soil (1:1:2:2:2).
Level the surface of the soil mixture, moisten it and spread the hydrangea seeds, which are small in size, evenly over it. It is not necessary to cover the seeds with the substrate. Cover the seeds with cling film or glass. Remember that the seeds need to be aired daily and that the substrate should not dry out with a sprayer. Pickling into a deeper box is carried out only after the bushes have formed a pair of true leaf plates.
In this case, the same substrate is used as for seeding. The seedlings should be transplanted into pots that are up to 70mm across.
Propagation by bush division
The fastest and easiest way to propagate Hydrangea is by bush division. However, you must be very careful here and also need a certain amount of skill. During the spring transplanting, divide the bush into several parts.
When doing this, take into account that each part should have a growth point and well-developed roots. Carry out the shortening of the stems and roots in the dividers, and then they are planted in individual containers, with the surface of the substrate covered with a layer of peat. If you carry out the division of the bush in the spring time, all its parts will be well rooted in the fall.
Pests and diseases
If the humidity is too high, it may cause the home hydrangea to be affected by grey rot. To save the plant, spray it with a solution of Bordeaux mixture.
Also high humidity can cause the development of false powdery mildew. In this case the bush should be treated with a solution of a fungicide or copper-containing agent.
If the air in the room is too dry, aphids or spider mites can settle on the plant. To get rid of them, spray the bush twice with a solution of Actellic or soap at intervals of seven days.
Hortensia plants turn yellow
The hydrangea foliage may begin to turn yellow for the following reasons:
- dull or infrequent watering;
- the plant requires nitrogen;
- the bush is infested with chlorosis (this is due to too alkaline substrate in the tank).
To save this shrub, simply correct any mistakes you have made in its care.
Flowers often find that the plant begins to shrivel up. This could be due to:
- insufficiently frequent watering with a sprayer;
- untimely fertilizing;
- injury to the root system during transplanting.
Hortensia leaves begin to fall off
Most often after they have dried. Remember that this is a water-loving plant and therefore you must water and moisten it regularly with a sprayer.
Hortensia does not bloom
Most often this is due to a warm wintertime. A shrub depleted after a long bloom cannot regain its strength in a warm and bright place. It will need to be cool and dark for the resting period. In such a place, the Hydrangea will have to stay between 70 and 80 days. The cellar or dark room is a good place for over-wintering.
Cut off all of its foliage, shorten the powerful stems by ½ part, and the weak ones - cut out under the root. Prepared bush together with the pot is transferred to a cool place and laid on its side. The culture is sent to wintering in December, and in February it already begins to revive. If done correctly, the bush will bloom lushly and for a long time every year.
Why does the indoor hydrangea not bloom? | toNature.
Pictures of home hydrangeas with photos
Hortendas only grow in room conditions, the large-leaf hydrangea (Hydrangea macrophylla), also referred to as garden hydrangea. And many of its varieties (over a hundred) are also used for this purpose.
The varieties with cream and white shade inflorescences:
- Me E. Mouillere. The inflorescences reach 18 to 20 centimeters across, and the flowers are 20-60 mm.
This plant differs from other varieties in its narrower foliage.
- Souer Tharese. An early flowering low shrub, it reaches a height of 35 to 40 centimeters. The inflorescences consist of regular-shaped flowers, and they reach 15 to 17 centimeters across.
Cultivars with pink inflorescences:
Late flowering plant reaches 0.6 to 0.7 m in height. The rich pink large inflorescences reach about 30 centimeters across. The edge at the sepals is deeply incised.
- Hamburg. The plant is 0.35-0.4 m tall. The inflorescences reach 16-18 centimeters across, with pink flowers that are 40-50 mm in diameter.
- Europa. The height of the lushly blooming bush is 0.4-0.5 m. Inflorescences are 20-25 centimeters in diameter and flowers are about 60 millimeters.
Cultures with red-colored inflorescences:
- Red Sensation. The inflorescences are reddish maroon. If iron salts are added to the substrate, then they will turn a burgundy-purple hue.
- Prima. This plant is a medium-flowering variety, with a height of 20 to 25 centimeters.
The small flowers, up to 35 mm in diameter, are gathered into small inflorescences (15-18 centimeters across).
Variants with blue inflorescences:
- Early Blue. This strong-growing plant is adorned with rich blue inflorescences.
- Ramars Mars. The compact bush has inflorescences up to 20 centimeters across.
The edges of the petals gradually turn a greenish hue.
Hortensia species and varieties. Which Hydrangeas are best to grow at home.