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  • DESIGN / BUILD
    • Process
    • Project Portfolio
    • Behind The Design
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  • MAINTENANCE
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    • Fine Gardening
  • TREE
  • IRRIGATION
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    • Careers
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Care For New Seed Lawns

Your new lawn has been carefully installed and will require continued maintenance to become an established turf. The success and results of a seeding project depend largely upon attentive post-planting care. Therefore, it is critical to the success of your lawn installation or renovation that the following watering and mowing instructions are followed.  

PLEASE NOTE: 

  • Keep all non-essential foot traffic to an absolute minimum during the initial establishment period. 
  • Properly irrigating during the establishment phase is a critical aspect of any planting project.  
  • Adequate moisture is required to initiate seed germination and also to sustain young seedlings before their root systems are fully developed.  
  • Too much water can inhibit germination, will promote disease problems, and may cause “wash-out” of seed and soil.  • Keep the planting site evenly moist but not soggy. Gradually scale back irrigation as the turf (specifically the root systems) develop and mature.  
  • At first, water frequently to a shallow depth. As seedlings mature, reduce the frequency of irrigation, but increase duration of each irrigation event to water more deeply, eventually recharging the root zone and allowing the top of the soil to dry between irrigation events. 
  • Mowing is a key step for turf establishment as mowing stimulates new growth which is the primary driver of turf density. We recommend waiting 2-3 weeks to mow after seed has been applied. 
  • You may apply a balanced turf fertilizer after installation. We offer tailored lawn care programs to help protect your investment. • If your lawn is seeded in the Spring, there is a greater chance that weeds will be present. 
  • A newly seeded lawn can take 15-45 days to germinate and 2-3 years to reach full maturity and density. This is not the same as sod and may require additional work (ie: more seeding) at a later time. Please have patience. 

➢ 1 Maintenance Practices (0-10 days): 

Water each day for at least 10-15 minutes in each area of lawn (according to how much water your sprinkler emits).  Water the soil to a depth of about ¼”. Watering a second time each day is recommended if the temperatures are over  65° and sunny. You are watering to keep the seed moist. Full sun areas may require more water than shady areas. Germination Vigor: Turfgrass mixes contain many seed varieties. Each seed variety has a different germination speed. Seed mixes will take from 10 to 35 days to germinate all seed varieties. Consistent moisture and evenly distributed watering must be maintained for 35 days to achieve complete germination. Allowing the lawn to dry out will result in partial or even total seed mortality.  

➢ 2 Maintenance Practices (10-28 days): 

The early germinating grasses (rye and fescue types) will develop first, followed by the slower germinating (blue grass) types. Continue to water every day, gradually increasing the duration of the watering each day. Water to a  depth of about ½”. Do not allow the lawn to puddle. Begin mowing as soon as the turf can withstand traffic. The lawn will need to be cut once it reaches about 3-4” in height. Only remove 1/3 of the leaf tissue per cut. In other words,  when seedlings reach a height about ⅓ higher than desired lawn height and can withstand traffic, begin to mow.  Discontinue watering for one day before mowing to let the lawn dry out. A light sprinkling of the lawn is OK to cool it down in hotter, drier weather. Water after mowing the lawn for the first time. 

➢ 3 Maintenance Practices (4 weeks and on): 

Continue to cut the lawn as needed, typically once every five to seven days. Be gentle on the new turf. Collect the clippings initially. Wait until after 3-4 mowings before regular use of the lawn resumes. Remember, blue-type grasses take 21 to 36 days to germinate so continue to water diligently. Water the lawn approximately twice per week, making sure to apply 1” of water each week. If you are applying fertilizer, follow the instructions carefully and use a rotary spreader. Look for a fertilizer that has a nutrient ratio of 3:1:2 which indicates the amount of nitrogen, phosphorus, and potassium (NPK). 

Care for New Seed Lawns

 Water Mowing Fertilizer Additional 

 

Applications

Recommended Practices
Prohibit all traffic on the lawn until a solid stand of grass has developed (three weeks or more) after which do not allow playing  or heavy use until after six weeks of growth or after three lawn mowings.
0-7 Days Frequent, light No No  

 

No 

No
8-14 Days Frequent, light No No No No
15-21 DaysFrequent, lightFirst Cut 

 

(when plant  

reaches  

second leaf  

stage)

No No No
4-6 weeks Frequent, longer  periodsCut to height  of 2.75” to  

 

3.5”

Apply a fertilizer  with a 3:1:2 ratio of  up to ¾ lbs. 

 

Nitrogen per 1000  sq. ft.

No No
7-10 Weeks Less frequent,  

 

longer periods

Cut to height  of 2.75” to  

 

3.5” 

No No No
3 Months 1” a weekCut to height  of 2.75” to  

 

3.5”

Next regular  

 

application

First pesticide applicationNo
6 Months 1” a weekCut to height  of 2.75” to  

 

3.5” 

  Aerate
1 Year 1” a weekCut to height  of 2.75” to  

 

3.5” 

  Thatch
Notes: Frequent, light  

 

watering, at least  twice a day will not  only keep the top  ½” of soil moist, but will help spur  

germination. As 

seedlings begin to  emerge, the  

intervals between  watering can be  

lengthened.

Do not water  

 

the lawn one to  two days  

preceding the  

first lawn  

mowing.  

Continue  

watering cycle  after first cut. 

Sharpen mower  blades  

regularly.

Apply fertilizer at half  the normal rate in  shady lawn areas.Put off making  

 

chemical weed  

control  

applications for  as long as  

possible. Most  

herbicides can be  toxic to young  

seedlings. 

Use pesticides  

sparingly and  

only as needed.

Aerate at least once per  year, twice is  

 

preferable. 

Lynch Landscape & Tree Service
80 Union Ave
Sudbury, MA 01776

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