7 biological weed killers for paths, pavement & co

Biological weed killers are a gentle alternative to chemical preparations. To effectively control weeds on paths or between cobblestones, you also need to properly use organic alternatives. We'll show you how.

Weeding

The gentlest way to get the weeds out of the pavement is to weed them continuously. This is a cost-effective and quick option even for smaller areas.

To get the weeds out between the joints, you will need the following tools:

• Grout scraper
• Grout brush
• Weed cutter

Use the weed cutter to pull long-rooted weeds, such as dandelions, out from between the joints. With a joint scraper you can clear deeply rooted joints. As an alternative to the joint scraper, you can also use a sow tooth for wider joints, as it is for

Vegetable patches is used. With the joint brush, you can then simply brush away smaller plants or weeds that have just emerged.

Tip: If you scrape out joints, fill them up with sand right away. This is how you prevent weed seeds from falling on nutrient-rich soil.

water

high pressure cleaner

There are biological weed killers in every household in the form of water. You can use this in different ways; you can use heated water for smaller areas. If you have to clean long distances or large paved areas, the high-pressure cleaner is the better choice. The high-pressure cleaner has the advantage that you not only get smaller weeds out of the joints, but also clean the surface at the same time.

Tip: When using the pressure washer, always start at the house walls and work your way away from the wall. This will reduce the risk of walls getting dirty.

Hot water

Boiling water is also a very good biological weed killer. It even gets rid of stubborn weeds and can also act as a preventative against seeds that have already collected in the joints. In addition, the boiling water is also suitable for areas that are difficult to clean, such as gravel areas.

The advantage of boiling water is that you can target problem areas with it. After pouring the hot water over it, all you have to do is collect the dead weeds some time later.

heat

Flaming device

Thermal devices are a sustainable way of getting the patch clean. Flaming devices burn away unwanted weeds with almost no residue. You can borrow the devices from hardware stores for a fee, for example. The advantage is that weed seeds are also destroyed by the heat. The use of flame burners, however, requires a little practice, because they must not be held at one point for too long, otherwise you will damage the paving stones.

Infrared heater

Biological weed killers are trendy, which also shows that new technologies are used again and again. The alternative to the flame device is infrared radiation. They work similarly to flame scarfers, but are much safer.

Advantages at a glance:

• No open fire
• Micro-organisms are spared
• can also be used under trees and bushes

Commercially available preparations

Biological weed killers are rarely found on the market, as their effectiveness is similarly limited to mechanical methods, but the costs are much higher. When choosing products, you should always pay attention to whether it is a current product. Many biological weed killers have been withdrawn over time because their approval has not been extended. Occasionally there are old stocks in warehouses that are still on sale. However, their use is often no longer permitted.

COMPO organic weed killer Herbistop AF	Natures organic weed-free
- for single and dicotyledonous weeds - only suitable for paths and ornamental plants - Duration of action up to eight weeks - works within two to three hours - Can also be used with algae and moss - Available as a ready-mixed in the spray bottle	- based on acetic acid - for single and dicotyledonous weeds - Use diluted against moss in the lawn - suitable for bushes and trees - unsuitable for non-woody plants - Available as a ready-to-use spray bottle mix

Note: Biological path and pavement weed killers work better when used during dry periods. As a result, he remains focused and works much longer against sprouting seeds.

Prevent weeds

Instead of laboriously and sometimes costly fighting the weeds on an ongoing basis, it is more sustainable to prevent weeds between the pavement and on paths.

Depending on the type of area, different methods are available:

• Mulching (split, gravel, Bark mulch)
• Weed control
• Polymer jointing sand

frequently asked Questions