Question 1

When can I expect to see results?

Accepted Answer

Grass will begin to germinate and become visible in 3-7 days, however it is important to
note that some varieties of seed contained within traditional lawn mixes can take up to
21 days to germinate.
 
Traditional lawn seed blends contain a diverse blend of grass species that
each possess varying germination rates. Some of the ‘nursery’ species
such as Ryegrass will begin to germinate within the 3-7-day period. This
rapid germination characteristic helps to create quick ground cover, which
helps to limit weed growth and resist erosion. Other species contained in
traditional mixes, such as: Fescue varieties and Kentucky Bluegrass
(produce a dense, colorful, climate tolerant, wear and disease resistant
turf), typically germinate within the 21-day period.

Question 2

When is the best time of year to hydroseed?

Accepted Answer

Spring and fall are the best seasons for hydroseeding.
 
There are advantages and disadvantages to seeding in most seasons; hydroseeding in
the spring and fall will require less watering. More favorable temperatures and sunlight
in the summer months will promote rapid growth of hydroseed, however more frequent
watering is required.
Turfgrass specialists suggest that grass grows fastest and strongest when planting
aligns with the seed varieties period of active growth. Varieties present in most lawn
mixes, such as Kentucky Bluegrass, Fescue, and Ryegrass grow best in cool
temperatures of late summer and early fall.

Question 3

How often and how much should I water?

Accepted Answer

Hydroseeded areas should begin to be watered 24 hours after application and should
be watered 2 to 3 times daily until grass begins to grow. In early spring and late fall,
when temperatures are typically cooler, watering once daily is normally enough.
 
Turfcare experts suggest that the upper 1” (25mm) should stay moist for the first two or
three weeks after seeding.

After the lawn begins to establish, watering can typically be reduced to once every 2 to
3 days.

Question 4

When is it safe to begin mowing?

Accepted Answer

The hydroseeded area can be mowed as soon as the grass blades are 2” to 3” (50-
75mm) high.

Question 5

When should pesticides be applied?

Accepted Answer

If perennial weeds or undesirable grasses are a concern on an existing lawn or site, it is
recommended that weed control be considered prior to hydroseeding. It is best to
review supplier or product recommendations as post treatment wait times for seeding
can vary. When in doubt turfgrass specialists recommend that pesticide applications
take place a few weeks in advance to seeding. This would allow for any follow up
application to treat persistent weeds.
 
Industry experts suggest that it is best to wait at least 3 months prior to any follow up
applications of pesticide after hydroseeding as some products have the potential to
hinder growth.

Question 6

When should I fertilize?

Accepted Answer

Industry experts suggest that it is common practice to apply a nitrogen rich fertilizer after
the first cutting with a fertilizer regimen beginning 4-6 weeks after hydroseeding.

Question 7

How do I prepare my site for hydroseeding?

Accepted Answer

To ensure effective coverage of hydroseed and avoid future bald spots sites, final grade
surfaces should be debris free (rocks, wood, construction waste) and contoured to the
desired landscape design or drainage plan. Industry experts recommend that a final
graded surface consisting of 4” or 100mm of fertile topsoil is optimal for hydroseeding.
 
For existing lawns, it is recommended that the lawn be cut short and power raked or
dethatched to allow for optimal seed penetration. When the lawn surface is hard and
dense core aeration is suggested.

Question 8

Is it ok to walk on fresh hydroseeding?

Accepted Answer

It is best to avoid foot traffic on any freshly hydroseeded area. Footprints can leave
depressions and cause future bare spots.

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HYDROSEEDING FAQ

Frequently asked questions