A Prairie Garden Journal    by Dick Meyer

 


Feed & Weed
In the Fall
For a
GREEN Lawn




      

 

 

 

 

It’s easy to get motivated to get out of the house in the springtime and do a few lawn care chores.  You’ve been cooped up in the house all winter long, and it feels good to get outside into the warm sunshine and get a little exercise.  But by the time fall rolls around, you’ve been mowing and trimming the lawn all summer, and it’s easy to just kind of let the lawn slide on into winter with as little effort as possible. 

But to get a really healthy lawn, a few important lawn care chores—fertilizing and weed control—are best performed in the fall.  And, if you’re at all concerned about the health of the planet, it turns out that fall is the “greenest” time of year to perform these tasks as well.  

If you have dandelions in your lawn each spring, you can be sure that you had
  Most lawn care professionals recommend that Wyobraska lawns receive a total of 2 pounds of actual nitrogen per 1000 square feet of lawn area each growing season—and that about half of that amount should be put on in the fall—during the months of September or October.  An average sized Wyobraska lawn is between 5,000 and 10,000 square feet in size, by the way.   The percentage of nitrogen by weight is the first number on a fertilizer label, so to determine the number of pounds of actual nitrogen in a bag of fertilizer, simply multiply the first number on the label by the weight of the bag.   For example, a 40 pound bag of lawn fertilizer whose label reads 15-10-15, contains 6 pounds of nitrogen (15% X 40 pounds).

 

Previous Articles

Fractions March 15
Yardner March 8

Urban Legends of Trees March 22
Que Serra, Serra March 29
Grocery Store or Garbage Dumpster Plants April 5
Planning Your Landscape Project April 12
Planting Cool Trees April 19
Keeping Trees Alive April 26
Thrillers, Chillers, Spillers May 03
Will You Still Love Them May 10
Ornamental Grasses May 17
In Memory of Cedar Trees May 24
Gardening is not Childs Play
Versatile Viburnums June 6
Yardner Plants June 13
2007 Garden Walk and
Blue Spruce Decline

The Birds & Bees of Butterfly Gardening June 28
Summer Landscaping July 5
Cutting Your Lawn Down to Size July 12
Some Like it Hot!! July 19
When a Tree Falls on 5th Ave
July 26

Green Landscaping August 2
American Idol-Landscape Aug 9
Fall is for Planting Aug 16
Is your Landscape Neat or Messy? Aug 23
The Seeds of a good Landscape Aug 29
Big Red Fall Color Sep 6

Fall Landscaping Tips Sept 13
 

2006 Articles

 

 

 

 dandelions in your lawn the previous fall.  Dandelion seeds normally germinate in late summer and spend the fall forming a plant that will go dormant in your lawn for the winter.  You don’t see them, because they don’t bloom in the fall, but they are there.  When these plants come out of dormancy in the spring, they bloom quickly, making it difficult to spray and kill them before they bloom.  However, the young dandelion plants are relatively easy to kill in your lawn this fall with relatively low does of herbicide because they are growing so actively and readily absorb the herbicide. 

Fall is also the best (and “greenest”) time of year to fertilize your lawn.  The reason for this has to do with how grass plants use fertilizer at different times of year.  In the spring, grass plants are actively trying to grow leaves (blades)—it’s what grass does in the springtime.  So when you fertilize your lawn in the spring, it uses the fertilizer to grow its leaves even faster and taller than it otherwise would.  If it is given a lot of fertilizer in the spring, your lawn will even use sugars and starches that it stored in its root system the previous summer and fall to grow as many leaves as fast as possible.  All that springtime growing can actually cause a lawn to weaken its root system and leave it vulnerable to summertime drought stress and insect attacks that would not seriously threaten a lawn with a deep, fully-stocked root system. 

By late summer and early fall, grass plants switch over from growing leaves to storing energy in their root system for the winter.  So when fertilizer is applied to a lawn in the fall, the grass plants use the fertilizer to grow and expand their root system and to fill it with as much stored plant sugars and starches as possible.  The plant will use these stored sugars and starches to form its first green leaves the next spring.  The surest way to have the first green lawn in your neighborhood next spring is to fertilize your lawn this fall. 

 

 

A good rule of thumb for a green and a “green “ lawn is to water and mow as needed in the spring and summer, and to fertilize and control weeds in the fall. 

 

The Key To A Fast Lawn
From Seed

With all the new home construction in Wyobraska, many homeowners have seeded new lawns this fall.  A key to fast establishment of new lawns is to fertilize with small doses of fertilizer about every two weeks until the lawn has a uniform height, color, and rate of growth.  Wyobraska soils, especially those around new homes, tend to be deficient in nitrogen.  Thus newly seeded lawns in Wyobraska tend to germinate and form small, short plants which then seem to just sit there and not grow.  These small grass plants will actually “just sit there” for a year or longer unless they are stimulated to grow with regular applications of nitrogen and phosphorus.   I recommend 3-4 applications of about ˝ pound of nitrogen per 1000 square feet of newly seeded lawn at two week intervals.  I recommend using a fertilizer with about equal amounts of nitrogen (first number on the label) and phosphorus (second number on the label) for this starter fertilizer.   
 

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