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Best Time to HydroSeed?

Real-world data & DIY friendly tips

(This data is based on jobs primarily in king-county, snohomish-county, pierce-county, and thurston-county in the last few years...)

Quick Takeaways

Choosing the right window to hydroseed can save you weeks of babysitting and watering. We've crunched five years of job data so you can zero-in on the sweet spot—and grow a lush lawn faster.

Seasonality of HydroSeeding Jobs over the last 5 years

The chart above shows the number of jobs completed each month for the last 5-years. This data is aggregated between erosion-control and hydroseed jobs. The main pattern that we see is that the number of jobs completed is highest in the spring and fall months.

Behind the scenes we can see that spring jobs are typically home-owner lawns, while fall jobs are typically commercial erosion-control jobs. Erosion control is popular for property development because property developers are usually not allowed to leave open/un-covered dirt on their projects.

Average Seasonality of HydroSeeding Jobs

The chart above shows the average number of jobs completed each month for the last 5-years

Washington State Temperature Patterns

See Best Temperature to Hydroseed Temperature plays a crucial role in seed germination and grass establishment. Let's examine Washington state's typical temperature patterns throughout the year to better understand optimal hydroseeding conditions. The chart below shows average monthly temperatures, which helps explain why spring and fall are such popular seasons for hydroseeding projects.

DIY HydroSeeding Game-Plan

  1. Test your soil (aim for pH 6.0-7.0) and blend in compost for food and fluff.
  2. Till or loosen the top 3-4", then rake smooth—no low spots.
  3. Work in a starter fertilizer (high in phosphorous) just before spraying.
  4. Rent a hydroseed machine or hire a spray-only service (we can help!).
  5. Keep the mulch moist—light water 3-4× daily for the first week, then taper off.
  6. Mow at 3" tall, then feed lightly after the second cut.

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