Fertilizing under bark mulch seems to be a problem for some. In fact, it's very simple. Here are 2 ways to fertilize under bark mulch.
Even if you have spread bark mulch in the garden bed, you can or must still provide the plants with sufficient fertilizer. This is extremely important, because the bark mulch often removes valuable nitrogen from the soil. You should therefore always provide the soil with a good amount of nitrogen fertilizer before applying the bark mulch.
Once the bark mulch has been applied, you basically have two options for fertilizing under the bark mulch. We have described these two options in more detail below.
2 ways to fertilize under bark mulch
➤ Option 1 - liquid fertilizer:
If you want to fertilize your plants, even though you have spread bark mulch in the garden bed beforehand, you should use liquid fertilizer if possible. In this way, the plants can easily be supplied with growth-promoting nutrients despite the moisture-storing bark mulch. It is recommended that you often use nettle manure that you have made yourself when fertilizing under the bark mulch.
➤ Option 2 - solid fertilizer:
As an alternative to liquid fertiliser, you can also spread a so-called solid fertilizer (grains) in the flower bed. To do this, you always have to shovel aside the bark mulch in the immediate vicinity of the plants. Then apply the fertilizer and then distribute the bark mulch evenly around the plants again. This has the advantage that the applied fertilizer usually has a slower effect on the soil and can therefore have a longer beneficial effect on the plants.