Perennial Peanut tables comparing establishment & maintenance to St. Augustine grass

Reproduced from University of Florida IFAS document

Table 1: Establishment costs per 1000 ft2 of St. Augustinegrass (SA) and Perennial Peanut (PP) sod. Establishment period assumed to be first 30 days after sod installation.
St. Augustine grass (SA) Perennial Peanut (PP)
Comments Price Amt Cost Price Amt Cost
Sod Installation Price includes sod and labor to lay $.30/ ft2 1000 300.00 $1.25/ ft2 1000 $1,250.00
Fertilizer SA: 1.0 lb-N, P & K rates per soil test. PP: Starter fertilizer with P & K per soil test. $5/ 1000 ft2 1.0 5.00 $5/ 1000 ft2 1.0 5.00
Irrigation water SA: 1/4", 2x/day for 14 days, then 1/4" 1x/day for 16 days. PP: 1/4", 3x/wk for 30 days See note 6,846 gals 17.00 See Note 2,337 gals 5.50
Initial Mow SA: 1x per 30 days PP: no mowing required $7/ 1000 ft2 1.0 14.00 $7/ 1000 ft2 0 0.00
Total Establishment Cost $336.00 $1,260.50
Difference in initial establishment costs 924.50
Annual Establishment Cost Years of Life Years of Life
10 15 20 10 15 20
Depreciation (Est Cost/ years) 33.60 22.40 16.80 126.05 84.03 63.03
Avg. Interest (Total cost/2) * 5% 8.40 31.50
Annual Establishment Cost ($/yr) $42 $31 $25 $158 $116 $95

 

Notes

  • 1. Irrigation costs based on the 2002 water-pricing schedule for a residential user in the city of Ft. Myers.
  • 2. Water consumption formula: (in./application) rate * frequency * ft/12 in. * 1,000 ft2 * 7.48 gal/ft3 = gal per application.
  • 3. Fertilizer, chemical treatments, and mowing prices based on typical charges of commercial landscape companies servicing residential homes.
  • 4. Average home lot size assumed to be 5,000 ft2.
  • 5. Pests, drought, and excessive rainfall stresses St. Augustinegrass (SA) lawns. It is assumed that St. Augustinegrass lawns are replaced every 8 years. Depreciation costs represent the annual amount of money that would have to be set aside to replant an SA lawn.
  • 6. "Average Interest" represents the opportunity cost of spending money on lawn establishment rather than investing the same amount of money in a "safe" interest-bearing asset. Selection of an interest rate (i.e. 5%) is arbitrary but attempts to reflect current market conditions.
Table 2. Annual maintenance cost per 1000 ft2 of established St. Augustinegrass (SA) and Perennial Peanut (PP) groundcover.
St. Augustine grass (SA) Perennial Peanut (PP)
Comments Price Amt Cost Price Amt Cost
Fertilizer1 SA: 1.0 lb-N per application P & K based on soil test. PP: annual sulfur application $5/app 3 app $15.00 $5/app 1 app $5.00
Pesticides1 SA: various herbicides, fungicides, and pesticides PP: grass herbicide. $5/app 6 app 30.00 $5/app 2 app 10.00
Irrigation water2 SA: 1/2" 2x/wk for 32 wks (dry season). None during wet season. PP: no irrigation water. $2.80 per 1000 ft2 19,947 gal 56.00 $2.80 per 1000 ft2 0.0 gals 0.00
Wet Season Mow (20 wks) 3 SA: 1x per 1 wk PP: 1x per 4 wk $7/mow 20 140.00 $7/mow 5 35.00
Dry Season Mow (32 wks) 3 SA: 1x per 2 wk PP: 1x per 12 wk $7/mow 16 112.00 $7/mow 2 14.00
Annual Maintenance Cost $353 $64
Annual Establish Cost (20 yr life) $25 $95
Total Annual Cost $378 $159

 

Notes

  • 1. Fertilization and chemical treatments costs include both material and application costs. Prices were collected as part of a telephone survey of commercial landscaping companies in the Ft. Myers/Naples area. Fertilizer chemical application costs ranged between $20 and $35 per residential lot. Average residential lot assumed to be 5,000 ft2.
  • 2. Irrigation notes:
    • a. Dry season: Oct 1 - May 30 or ~ 32 weeks.
    • b. Wet season: June 1 - Sept. 30, or ~ 20 weeks.
    • c. SA irrigated during the dry season at a rate of ½ inch, 2 times per week. No irrigation during the rainy, or wet season.
    • d. PP does not require any irrigation during the dry season.
    • e. Water price based on the 2002 rate schedule for residential users in the city of Ft. Myers irrigating a standard lot of 5,000 ft2. Monthly water consumption for lawn irrigation estimated to 13,370 gallons.
  • 3. Mowing costs based on rates charged by commercial landscaping companies for mowing and trimming services on a standard lot size of 5,000 ft2.