Roundup Rapid 900 ml - concentrate
Product information "Roundup Rapid 900 ml - concentrate"
- Content: 900 ml
- Type of control: Concentrate (total weed killer)
- Active substance: 500 g/l pelargonic acid
- Fast contact action
- Suitable for hard surfaces
The Roundup Rapid Concentrate 900 ml is a powerful and fast-acting total weed killer based on pelargonic acid, an active substance naturally occurring in nature. This herbicide formula is highly concentrated and works through contact action. It controls all green plant parts it comes into contact with and is therefore non-selective: both weeds and grass are affected. With a high concentration of 500g of pelargonic acid per liter, this product ensures rapid dehydration of treated weeds. As a result, visible effects can often be seen within a few hours. It can be used to treat weeds (annual and perennial) and mosses on non-cultivated, non-paved areas. Visible results can be expected after approximately three hours. It is quickly biodegradable in the soil, and sowing or planting is possible again after just one day.
With a content of 900 ml concentrate, you can treat a significant surface area depending on the dilution. This product provides an effective solution for quickly removing unwanted vegetation in areas where full control is required.
When to apply Roundup?
- On a calm, dry day
- Temperature between 12°C and 25°C
- Do not apply if there is a lot of wind
- Do not apply if it rains
- Do not apply if it is very cold
- Do not apply if it is very hot
Apply Roundup to the leaves. It is important to spray the entire leaf thoroughly, but avoid runoff. The best time to apply Roundup is when leaves are green and actively growing, typically in spring and summer.
Dosage:
- Weeds: 45ml/1 L water /20m²
- Moss: 35ml/1 L water /20m²
Approval Belgium: 10787 G/B
Composition: Pelargonic acid: 500g/l

Protect the environment and public health
Use plant protection products and biocides safely. Read the label and product information before use.
Click here for more information on recommendations for thoughtful control.
Since 2019, glyphosate is no longer allowed to be sold. It used to be present in Roundup as well as in many other weed killers from different brands. Following this ban, Roundup developed a weed killer based on pelargonic acid and acetic acid. With this renewed, natural formula, Roundup is allowed to be sold again.
Product specifications
| Approval number Belgium: | 10787G/B |
|---|---|
| Classification garden: | Weed and moss control |
| Composition: | Pelargonic acid 500 g/l |
| Contents in L: | 0,9 |
| Contents in ML: | 900 |
| Control and protection of...: | Moss, Weeds |
| Effect: | Contact |
| Large volume: | Yes |
| Product group: | Diluent concentrate |
| Substance: | Liquid |
| Treatment: | Preventing (preventive) |
| Type of problem: | Moss, Total weed control |
| Usage location: | Outside |
| Yield in m² per pack: | 400 |
| EAN: | 5411463105600 |
| Weight: | 1.01 kg |
| Contents: | 0.9 l |
| Package dimensions: | 14.6L x 5.2W x 26H cm |
Good to know
| Signal word: | Warning |
|---|---|
| Warnings (H phrases): |
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| Precautions (P phrases): |
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Reviews
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5 reviews
10 March 2026 19:04
Uitstekend
werkt vlug
26 January 2026 07:22
Uitstekend
WERKT ZEER GOED MAAR WEL KOSTELIJK
5 May 2025 21:58
Uitstekend
snelle werking
24 March 2025 17:53
Goed
Gekend product met de gekende werking
6 January 2025 16:54
Uitstekend
Zeer goed zelfs tegen groen op terrastegels