Transplanting Rhododendrons and Oenosan
The name rhododendron is related to the antique Greek language ῥόδον (rhódon) = “rose”; δένδρον (dendron) = “tree”. It produces beautiful long lasting flowers providing that you select the correct soil and environment.
Plant your ‘rhodo’ shallow on a spot that is not exposed to direct sunlight. Don’t select an Easterly direction and avoid places where roots of large trees emerge on the surface (such as pines and birches). The best period for planting is in autumn. March and April is also an option if the weather is fine.
How to assures an optimal development of the root capillary system?
Make your hole about 3 times the size of the lump of earth in which the rhododendron is housed and approximately 40 cm (17 In) deep. Apply a handful of Oenosan organic fertiliser in the bottom before planting, followed by some flood irrigation. This assures an optimal development of the root capillary system. Depending of the type of soil you fill the hole with a mix of peat and earth. Then apply Oenosan as a leaf fertiliser (1.5 g/litre water) on a monthly basis. A rhododendron requires normally a soil type with low pH. Extensive testing in the Flemish research facility PCS near Ghent has proved that the absorption of phosphor is not hampered. The opposite is true, because the ‘weight’ of the element Calcium is more important of that of phosphor. Therefore the use of Oenosan is beneficial for the plant. The nursery Janeko in the vicinity of Antwerp that is specialised in rhododendrons has a proven track with Oenosan.