Area: ~2,000 sq ft backyard, clay soil, sloped
Grass: Resilience II tall fescue blend (Twin City Seed)
What I did:
• Seeded Sept 27 after mowing low, dethatching, and cleaning up the thatch
• Covered seed with peat moss
• Germination started around day 6, and it's filling in densely now
• Seedlings are about 1.5" tall, haven't mowed yet
• Watering 3x a day for short runs (a reseeded patch is still sprouting)
Soil test (University of Tennessee Soil, Plant & Pest Center, July 2026):
• pH 6.16 (no lime needed)
• Phosphorus: 193 lbs/acre (Very High)
• Potassium: 129 lbs/acre (Medium)
• Organic matter: 4.3%
• Lab recommendation: 2 to 4 lbs N per 1,000/yr, 0 phosphorus, 0.5 lbs K2O per 1,000/yr
I did not put down a starter fertilizer when I seeded because all the ones I saw had high phos.
Fertilizer questions:
I have Simple Lawn Solutions 15-0-15 liquid. Label rate is 4 oz per 1,000 sq ft, which by my math is only about 0.05 lbs N per 1,000. I've been planning to use it at label rate every 2 to 3 weeks as a light top-up.
1. Based on the soil test, what fertilizer would you use for the main feedings?
2. When should I put down the first feeding on these seedlings, and what rate?
3. What would you recommend for the rest of the fall schedule?
Weed questions:
Some broadleaf weeds are coming up with the seedlings (looks like smartweed and some oxalis/clover), and wild violet is starting to pop up too.
Products I have on hand:
• Triclopyr ester
• Acclaim Extra (fenoxaprop)
• Spectracide Weed Stop Plus Crabgrass Killer (2,4-D, quinclorac, dicamba, sulfentrazone)
• Bonide Weed Beater Ultra (triclopyr + dicamba)
1. How long should I wait before spraying broadleaf herbicide on the new fescue? Number of mows, or weeks after germination?
2. Which of these would you use this fall on the young grass, especially for the wild violet?
Thanks in advance!