Learning how to water plants to increase growth in pots, container or garden - especially how to water roots and tubers. Specialities: root growth or tuber growth of lawns, fuchsias, geraniums, dahlias and begonias.

20 May 2011

Adventitious Roots Develop By Covering Dahlia Nodes

exposed dahlia nodes now need covering
This is the dahlia cutting, rooted in a tray, and planted last week. To encourage adventitious root development it is important to cover the nodes
(where the leaves join the stem) with moist soil.


dahlia nodes now covered with soil
I have 'earthed up' this dahlia to the point marked in red above, then lightly firmed the soil with my knuckles to bring it into closer contact with the stem. This has covered the nodes and lower leaves (I don't remove them, but you can if you wish) whilst providing enough leaf for the photosynthesis which will fuel further growth. This covering also affords some protection against frost; and also against slugs, which have suddenly become a problem.

As the new roots develop, growth should be enhanced because the plant will be able to access more food and water.

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