In contrast to the tricky sowing of seeds, the vegetative propagation of orchids proves to be uncomplicated and promising. Read here which orchids are suitable for this form of breeding. How to divide exotic plants professionally.
How to divide orchids correctly?
To divide orchids successfully, select sympodial species such as Cymbidium, Oncidium or Brassia and divide them during repotting in the spring. Gently pull the roots apart or cut them if necessary, making sure both new parts have at least 2 bulbs. Pot the divided plants in fresh orchid soil and do not water them at first.
Which orchids are eligible for division?
Within the large orchid family, a broad distinction is made between monopodial and sympodial species. Monopodial describes growth with an axis whose growth occurs exclusively at the tip. These include Phalaenopsis or Vanda orchids. It is obvious that a single shoot axis cannot be divided without destroying the plant.
Sympodial orchids, on the other hand, thrive with several bulbs or shoots that are connected by a rhizome. Classic representatives of this growth form are the genera Cymbidium, Oncidium and Brassia. Almost all types and varieties of sympodial orchids can be considered for propagation by division.
How to properly divide an orchid
If repotting an orchid is on the care plan in spring, this is also the best time for division. One or two days before the date, water, dive and fertilize the plant so that the aerial roots are supple. In these steps you divide the root ball:
- Unpot the root ball and remove the substrate
- Pull the roots apart with both hands so that 2 parts are created, each with at least 2 bulbs
- If necessary, cut up a stubborn root ball with a disinfected scalpel (€10.00 on Amazon)
- Take this opportunity to cut off dead aerial roots
Immediately pot each segment with at least 2 or 3 bulbs into its own culture pot. Fill with fresh orchid soil so that all roots are covered. It is helpful to hit the pot on the table several times.
Tip
Freshly divided and potted orchids should be able to regenerate in peace. To do this, refrain from watering or diving the plants for the first 5 days. It is better to spray the leaves and aerial roots daily with filtered rainwater.
