Astilbe is a slightly different perennial. Although it likes to live in the shade under trees, it opens many colorful flower spikes. It is reasonable to assume that fertilization must play a central role. And it's true!
Which fertilizer is best suited for astilbe?
In order for the astilbe, which comes from the saxifrage family (Saxifragaceae), to bloom a lot, the element phosphorus must not be too scarce. When it comes to nitrogen, however, restraint is the order of the day. The following fertilizers are best for them:
- Compost
- Horse dung
- Horn shavings
- Long-term fertilizer from the trade
- Nitrogen-potassium-phosphorus Composition: 5-10-5 or 10-10-10
Astilbe should also be given a thick layer of mulch to protect it from drying out. When it decomposes, it also provides valuable nutrients.
When is the best time to fertilize?
The spring months of April and May,immediately aftercutting,are the best time to give the astilbe its annual ration of slow-release fertilizer. Because then the nutrient-consuming new growth is imminent. A second fertilization during the flowering period of the astilbe or in autumn can, but does not have to be necessary. This depends on how nutrient-rich the soil at the location already is. Just observe your plant, as you can tell by its growth and number of flowers whether it has all the elements.
How do I fertilize the astilbe correctly?
If a thick layer of mulch covers the soil around your astilbe, push it aside for fertilization. Under no circumstances should the fertilizer be added to the mulch. After spreading, the fertilizer is worked superficiallyinto the soil But carefully so as not to injure the roots of the astilbe. After watering, you can redistribute the mulch over the root area.
How to fertilize astilbe in the pot?
An astilbe in a pot is fertilized from April to September. Either evenlyevery 4 weekswith a liquidcomplete fertilizer, or in spring and July with a slow-release fertilizer.
Does astilbe need a lot of nutrients?
Every Astilbe, regardless of whether it is a creeping Chinese Astilbe or an upright Japanese Astilbe,requires a lot of nutrientsBecause allvarieties of Astilbe have Year after year it has to do two things: new growth in the spring and lots of flower spikes in the summer. Therefore, regular fertilization should be preceded by fresh, nutrient-rich and humus-rich soil.
Tip
Moisture is the greatest need of astilbe
No question, fertilizing is an important care point. But when cultivating astilbene, an adequate and uninterrupted supply of moisture is of far greater importance. If possible, plant these perennials, which come from East Asia, Japan or China, along a stream or pond edge. In any case, in partial shade or shade, where the soil cannot dry out too quickly.
