Hydroseeding slopes and erosion control
Hydroseeding can help establish vegetation on slopes, but ordinary lawn slurry is not a universal erosion-control system. The slope, soil, runoff and project requirements determine whether additional protection is needed.
Start with water movement
Look at where water enters, crosses and leaves the disturbed area. Concentrated flow can move seed and mulch before roots develop. Correcting drainage or using other specified protection may be necessary before vegetation can establish.
Specify more than a green coating
Seed choice, mulch type, application rate and binders should match the site. Steep slopes and drainage channels may require blankets, mats or other measures selected by a qualified professional. A color change alone does not verify performance.
Inspect after weather events
Inspect for rills, displaced mulch and sediment movement while vegetation develops. Ask who will maintain temporary controls and repair damaged areas. Do not assume a single application meets a construction-site stabilization requirement.
Discuss sensitive areas early
Pond banks, waterways and native planting areas need careful material and plant selection. Tell the contractor about proximity to water and any project specifications. Confirm applicable requirements with the responsible project professional.
Questions before you start
Will hydroseeding stop every washout?
No. Heavy rainfall, concentrated runoff or an unsuitable application can still cause erosion. A site-specific plan may require additional measures.
Can hydroseeding replace an erosion-control blanket?
Sometimes a hydraulic application is specified and sometimes a blanket or another system is needed. They are not automatically interchangeable.