Hydroseeding is a fast, cost-effective solution for establishing vegetation over large or difficult areas, but the real success of a hydroseeding project depends on the aftercare. Whether you're a contractor, landscaper, or site manager, this guide covers everything you need to know about maintaining hydroseeded areas and answers common questions, all based on GeoGrow’s expert advice.
What Is Hydroseeding?
Hydroseeding is a method of applying seed, mulch, fertiliser, and water in one even application using specialist machinery. This approach ensures uniform coverage and significantly increases the chances of successful germination and establishment, especially in large-scale or hard-to-reach areas.
Hydroseeding is commonly used for:
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Grassland establishment
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Wildflower meadows
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Soil stabilisation
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Erosion control on slopes and embankments
Hydroseeding Maintenance: Key Aftercare Tasks
Proper maintenance is vital to give hydroseeded vegetation the best possible start. Here's how to care for a hydroseeded area:
1. Watering
Watering is the most important part of hydroseeding aftercare.
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Keep the area consistently moist—like a sponge—but not waterlogged.
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Frequency and volume depend on weather and soil conditions. The goal is to avoid the area drying out.
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Once vegetation is fully established, you can gradually reduce watering frequency.
2. Mowing
Do not mow the area until the grass has become well established. This usually means waiting several weeks, depending on weather and growth rate.
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Mowing too early can uproot seedlings or compact the soil.
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Only mow when the grass is tall and strong enough to withstand cutting.
3. Fertilisation
The hydroseeding mixture already contains fertiliser to support early growth.
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Annual fertilisation is recommended after establishment to maintain healthy growth.
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Use a high nitrogen and phosphate fertiliser for best results.
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Avoid using any weed and feed or chemical weed control products during the first 3 months, as they can damage the young grass.
4. Weed Control
It's normal to see some weeds appear after hydroseeding.
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These often come from the soil seed bank and not the hydroseed mix.
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As the grass establishes and thickens, it will naturally outcompete many weeds.
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Persistent weeds can be removed manually until it's safe to apply selective herbicides after about 12 weeks.
Frequently Asked Questions
How long does hydroseeding take to grow?
Germination depends on the time of year and environmental conditions, but visible growth typically appears within 7–21 days. Full establishment can take up to two growing seasons.
Can I walk on a hydroseeded area?
You should avoid foot traffic on the area until the vegetation is established to prevent damage to seedlings.
What seed mixes are available?
Geogrow offers both standard mixes and bespoke blends tailored to site-specific conditions and maintenance levels. This allows for optimal performance in a range of locations and climates.
Can you hydroseed over existing grass?
No. The area must be cleared of dead or brown grass before hydroseeding to ensure seed-to-soil contact and proper germination.
Final Tips
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Monitor the site regularly, especially after heavy rain.
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Stick to a consistent watering schedule in the early stages.
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Don’t rush mowing or introduce chemicals too early.
By following this straightforward maintenance routine, you'll ensure the hydroseeding process results in a successful, sustainable vegetated area.
📞 Need Support?
For bespoke seed mixes, site-specific advice, or further maintenance tips, visit www.geogrow.com or contact our technical team.
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