Care +

Taking care of your new, soon-to-be, lawn

While hydroseeding is a fantastic way to grow grass and other plant life, it isn’t a one and done kind of process. It needs to be properly cared for to get the best results. We here at Syman are here for you and will give you the tips and tricks you need to get the best result.

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Stay Off Lawn

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Let It Dry

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Stay Off Lawn

After the hydroseed has been spread, allow it to dry for one day before starting your watering program. Once the area has dried for a day , it will need time and water for the roots to sink in. It’s especially vulnerable during the first two or three weeks. We recommended that if you’re installing sprinklers, do it before the seed is sprayed. This will help to keep anyone from walking on the freshly laid seed. To much contact and pressure on the seed can lead to thinned out areas, bald spots, and indentations in the soil. Try to keep pets off as well as ammonia from their urine can potentially stunt the growth of the grass.


Freshly seeded areas are thirsty and will need consistent watering. It’s usually recommended to water seedling roughly three to four times a day. This can be reduced once grass starts growing, but the seeds will need lots of water to take root properly. Previously installed sprinkler system can make this process much easier. Although it needs to be watered often, don’t produce any puddles as this could damage the seeds. Our ideal time recommendation for watering are 9am, 12pm, and 3pm. Try to avoid watering at night or you run the risk of growing fungi.


Creating an environment for seeds to take root and grow also means that any weeds in the area will likely surface and thrive as well. Be sure to clear the area of weeds before seeding to help keep them out of the hydroseeded area, otherwise you’ll have to pull them by hand once the seedlings have securely rooted themselves. It can be tempting to try and use some sort of herbicide early, but avoid laying any type of chemical weedkiller until the lawn is matured.

Mowing and Fertilizing

After grass is established, wait until the grass height is roughly 3 1/4″ to 4″ before you mow. Fertilize 3-4 time annually with a good quality fertilizer. Due to the differences in PH levels and compaction in soil, it is common to have areas that are slow in germination process, so don’t panic if some areas take longer than others. Many of these areas will fill in once weekly mowing begins. However, you must ensure that slow germination areas are not due to the lack of water. Also keep in mind that during cold weather it may take longer to germinate the seed. Hydroseed may splash on walls or sidewalks during initial spraying. This is also a regular occurrence and we do not recommend washing it off with water until grass has grown in.


In summary, here’s a generalized schedule that you can follow and modify as you see fit:

Day 1: Let the hydroseeds dry.

2-15 Days: The golden rule of hydroseeding is to keep the ground moist for a minimum of 30 days, without producing puddles. During those 30 days germination will occur. The ideal times for watering are 9am, 12pm, and 3 pm (do not water at night due to the high risk of fungi).

15 Days(optional): Lightly fertilize with a low nitrogen fertilizer.(ex. Best 6-20-20 XB can be purchased at John Deere Landscape).

30-45 Days: First mowing takes place(if you have grass). Lawn should be mowed when 50% of the area is 2″(inches) or taller. Mower must be sharp and free of debris. Continue mowing once per week. Cut back on watering to once per day after the first mowing. Morning watering is preferred.

60-90 Days: Apply good quality weed and feed that is approved for use on your grass or ground cover.