Fertilize twice a year
It is best to fertilize peonies twice a year. But it is not absolutely necessary. But fertilization supports the growth of the plant and stimulates its flowering ability. For the first time you should fertilize your peony in the 2nd or 3rd year of standing. Fertilization is not recommended in the first year of standing.
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The first application of fertilizer takes place in early / mid-March, i.e. when the peony sprouts. This fertilization serves to promote the shoot and a rich flowering. The second application of fertilizer takes place immediately after flowering. It serves to strengthen the plant for the coming garden year.
Do not fertilize from September
Shrub peonies in particular, which are not pruned back rigorously in autumn, in contrast to perennial peonies, should not be fertilized too late. The second fertilization should be carried out by September at the latest. Otherwise, there is a risk that the shoots will no longer be able to mature properly and will be damaged by frost over the winter.
Suitable fertilizers - organic
Peonies are considered to be poor eaters and they can still find nutrients deep in the soil. Nevertheless, particularly nutrient-poor and sandy soils should be regularly upgraded with fertilizer. The following are suitable for fertilization:
- compost
- Horn shavings (€ 6.39 at Amazon *) or horn meal
- Manure
- Bone meal
In principle, you should prefer an organic fertilizer, as it decomposes slowly and is therefore slowly absorbed. Chemical fertilizers such as the popular blue grain often lead to yellowing of the leaves.
Ratio of potassium, phosphorus, nitrogen
Peonies don't need high doses of nutrients. But if they are fertilized, care should be taken that the fertilizer is not too overloaded with nitrogen and phosphorus. The fertilizer of choice should be high in potassium and contain less phosphorus. Too much nitrogen promotes the development of fungal diseases.
Apply the fertilizer correctly
Unless you're planning to transplant your peony, you can fertilize it. First of all, the plant is cleared of weeds. Then the fertilizer is scattered over the root area. With a hand cultivator, the fertilizer can now be carefully and gently worked into the soil. Caution: The root tubers that are close to the surface are very sensitive!
Tips
At the right time, fertilizing can even protect the long flower stalks from kinking. The fertilizer acts like a support from the inside and strengthens the stems.
