Choice of substrate and preparation of the soil
Japanese maple, once planted, should only be fertilized moderately - even if the wood is actually very consuming. The problem with fertilization is the fact that the artificial supply of nutrients delays the ripening of the shoots. This in turn results in a reduced resistance in the cold season, which means that more fungal diseases can settle in the sensitive maples. For this reason, the focus should be less on fertilization and more on the choice of the optimal soil. Japanese maples prefer one
- sandy loam soil,
- which is very loose and permeable
- has a high nutritional content
- as well as a slightly acidic to neutral pH.
- Japanese maples are usually easy to overwinter
- Japanese maple - sometimes necessary to transplant
- Japanese maple inspires with intensive flowering
Before planting, the excavated earth can be enriched with well-rotted leaves to enrich it with nutrients.
Fertilize the planted Japanese maple
Basically, the planted Japanese maple does not have to be fertilized, provided the subsoil is sufficiently nutrient-rich. However, it is recommended (and completely sufficient on normal garden soil) to fertilize with organic fertilizer once at the beginning of the growing season. On poor soil, however, fertilization with a slow-acting, mineral depot fertilizer should be used, which also only needs to be done in early spring (April / May).
Nutrient supply with Kübelahorn
The situation is quite different with Japanese maples cultivated in pots. Since these cannot simply stretch their roots, like their planted relatives, and absorb nutrients themselves, humans have to help with artificial gifts - after all, the nutrient content in the pot will eventually be exhausted. However, the fertilization must be done with a sense of proportion, otherwise the winter hardiness suffers. Bucket maples are also best supplied with a high-quality long-term mineral fertilizer or an organic fertilizer, with the last fertilizer application being made at the beginning of August at the latest.
If you fertilize the Japanese maple in autumn with a little patent kali, this will make it easier for your tree to overwinter.