The homeland of thuja is East Asia. This feature of the plant allows it to be used in many landscape and architectural compositions.
- Why is it better to propagate it by cuttings
- How to properly graft thuja
- Cutting process
Why is it better to propagate it by cuttings
Thuja is widely used for landscaping and creating hedges, architectural forms in many countries. It is unpretentious and resistant to industrial emissions. In Russia, of all the variety of these plants, frost-resistant western thuja is most often cultivated.
It can be propagated by seeds and vegetatively. The same type of thuja will grow from the seeds, but it may already be a different form or variety, which is highly undesirable for creating a hedge. In addition, seeds require long-term stratification in natural conditions, under snow. Seedlings grow slowly. This takes two to six years. But thuja seedlings grown from seeds have one pronounced advantage - they are more hardy than plants from cuttings.
To create a thuja alley with the same characteristics, it is best to use cuttings. With the knowledge of the correct technology, even a novice gardener can cope with this simple matter. In a similar way, you can root not only thuja, but also plants such as yew, cypress and others. Thuja cuttings can give roots even in an ordinary jar of water. But there are a few secrets here. There should be a little water in the jar, only at the bottom, and the maximum number of cuttings is three, no more.
How to properly graft thuja
But when you need to get several plants and at the same time stronger (and in a jar of water they do not receive proper nutrition), this method becomes inconvenient. Therefore, gardeners usually practice thuja propagation by cuttings in greenhouses.
Used 2-3 year old lignified or young 50 cm lateral shoots with a piece of old wood (called "heel"). It is these shoots that give new roots well. In order for this "heel" to be at the cutting, it is abruptly cut off or cut in a special way. Thuja propagation by cuttings is carried out in the fall. In summer and spring, cuttings are not carried out for the reason that in most cases the cuttings dry out without having time to give roots.
The strongest shoot is selected for cuttings. Their vitality is much better, therefore, stronger and healthier plants are obtained from them.
In the room where the cuttings will be rooted, you need to maintain the humidity at 70%. This can be done using special humidifiers. They come in different models, including those with a low cost. Small greenhouses can be used. For successful cuttings, it is necessary to make good illumination (but not in the open scorching sun). For this, the greenhouse cap is made absolutely transparent. If there is not enough natural light, then phyto-lamps or a complex of fluorescent lamps can be used.
Needles are removed from the bottom of the shoots and placed in water for a couple of hours. Then the cuttings are planted in a transparent greenhouse (they need a lot of light and moisture) with a substrate consisting of a mixture of turf soil with peat and river sand. Usually they are taken in a one-to-one ratio. Before planting shoots, the soil must be disinfected with a solution of potassium permanganate so that there are no pathogens and pests left in it.
It is necessary to plant so that the remaining needles do not touch the ground, otherwise decay may begin, leading to the death of the plant. The plants are deepened by about 2-3 cm. In order for the roots to appear faster, the heels of the cuttings can be dipped in a mixture of heteroauxin or in Kornevin before planting.
If you are sprouting cuttings in a pot, then cover it with a transparent glass container. The greenhouse needs to be regularly ventilated, otherwise the stalk will start to rot, and not take root.
In a greenhouse, it is better not to water the plant, but to spray it. So you will achieve high air humidity and do not overmoisten the soil. It is not difficult to understand that the plant has taken root. He will have new fresh shoots. But even if the thuja has given roots, it is too early to send it to the garden. First you need to give her, as it should, to build up the root mass. Rooted cuttings are ventilated at first for a short time, then left open for an increasingly long time, carrying out a gradual hardening.
The thuja is tempered like this: on warm days it is briefly taken out into the open air, making such "air baths" more and more prolonged. Planted young plants need regular good watering and frequent feeding. In November, the plant is insulated with spruce branches, sawdust, leaves, covering material and left to winter.
Cutting thuja is a very interesting and useful business. Indeed, from one plant in a short time you can get a whole alley of thuja. It would take several years to create such an alley from seeds. And I really want the hedge to appear as soon as possible.