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How to propagate alpines by dividing, from seed and by taking cuttings
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There are 3 ways you can propagate alpines successfully. The three methods used are incredibly similar to the method you would use for most other plants whether taking cutting or sowing seed. They include:
- Sowing seeds: the process which removes seeds from alpines and cultivates new alpines from them. You can also buy rockery plant seeds from local garden centres and online.
- Dividing established plants: the process of lifting and dividing an existing plant is probably the easiest and a great way to spread existing plants into new areas.
- Taking cutting: the process of cutting part of an existing plant before or after it flowers and growing a new root structure and subsequently, new plant from it. This is probably the second easiest way after dividing.
Propagating from Seed
There are some species that like to reproduce on their own from seeds. Only true species are the likely candidates for this, as hybrids are often sterile even if they do produce seeds. The easiest way to ensure you have good quality seeds by purchasing them from a reputable seed retailer.
The process is simple. You take the seeds from the plant after flowering or buy new seeds and then place them in a new container or seed tray with compost. They will start to develop their root system the same as other plants and can be moved outside after this is done. If you take the seeds at the end of summer, you should keep the new alpines indoors until the following spring at which point you can move them outside and allow them to establish themselves in the garden before the flowering phase.
If you propagate at the end of the summer and then move them outdoors in Autumn, they won’t have enough time to get established and store nutrients for the winter.
Best selling rockery plant seeds
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Propagating by dividing established plants
Dividing rockery plants is the easiest and fastest way to propagate alpines. You can use this method on older, established plants. Simply lift them out of the ground or the container right after they have finished flowering. Shake away as much soil from the roots as you can. Gently break the plant into the individual pieces with their roots, and repot them in sandy compost, John Innes potting compost mixed with 30% grit should be ideal. Certain plants like succulents will break off at natural points or nubs and can be re-potted easily.
One particularly unique aspect of Alpine plants is that most can be propagated by simply detaching a piece of the existing plant that has already formed roots and putting it directly into a new container or directly into the ground. If you have a large plant in the ground you can simply use a trowel or spade to cut a section off the existing plant ensuring you get as much root as possible.
Propagating with Cuttings
You can also propagate rockery plants by taking cuttings. There are certain alpine plants that grow in a single crown from which the procumbent stems grow. In order to do this, you want to make a nodal cutting right at the soft tip for the new shoot.
Be selective about the shoots that you cut. You don’t want any that already has flower buds. They will very rarely produce healthy plants.
Once you have the new shoot in hand, use a very sharp knife to make a very clean-cut and remove the lower leaves. Put the cutting into seed compost or sand. they should be placed closely together in small pots or trays with individual cells as pictured above and put in a ventilated area that is shaded and closed off from direct sunlight until such time as you noticed roots growing out of the cutting and they can be potted up into larger 9cm pots. We recommend growing them on in 9cm pots before planting directly in the garden.
Whichever of these three methods you use remember that it’s important to know which variety of Alpine plant you have so that you can pick the most suitable and employs the technique at the right time. Using the right technique at the right time will go a long way toward ensuring the success of your propagation.
Last update on 2020-04-07 at 01:10 / Affiliate links / Images from Amazon Product Advertising API