What's included in our lawn fertilization program?
Diamond Lawns' fertilization program is built specifically for Treasure Valley turf: cool-season grasses growing in alkaline soil through hot, dry summers. Each visit combines the right fertilizer blend with the weed control your lawn needs at that point in the season.
| Step | Timing | What we apply & why |
|---|---|---|
| Step 1 | Early Spring | Balanced fertilizer for green-up plus pre-emergent crabgrass control applied before soil temperatures hit ~55°F. |
| Step 2 | Late Spring | Slow-release feeding with broadleaf weed control targeting dandelions, clover, and spurge during the spring flush. |
| Step 3 | Early Summer | Summer-stress blend that feeds the lawn without pushing excess growth in the heat; spot-treatment of breakthrough weeds. |
| Step 4 | Late Summer | Continued slow-release feeding to carry color through August, plus inspection for billbugs and surface insect damage. |
| Step 5 | Early Fall | The heaviest feeding of the year — fall is when cool-season grass rebuilds density and root mass. |
| Step 6 | Late Fall | Winterizer applied before the ground freezes so roots store nutrients for an early, thick spring green-up. |
Why does fertilization matter more in Idaho?
The Treasure Valley's soil is naturally alkaline and low in organic matter, which locks up nutrients like iron and leaves lawns pale even when they're watered well. Our blends compensate for local soil chemistry — including iron for deep color without surge growth.
A properly fed lawn is also your best weed and pest defense. Thick turf shades out crabgrass seed, resists billbug damage, and recovers faster from summer heat stress. Most "weed problems" we see in Boise and Meridian are really thin-lawn problems.
Fertilization + Weed Control Together
Every program visit includes weed management appropriate to the season:
- Pre-emergent crabgrass control in early spring — the only reliable way to stop crabgrass
- Broadleaf weed control for dandelions, clover, mallow, and spurge
- Spot treatments on every visit, not just when scheduled
What does lawn fertilization cost in the Treasure Valley?
Every lawn is different, so we quote from a free on-site inspection — we measure your turf area and check soil and weed conditions, then give you a per-application price. Customers who enroll in the annual treatment program save on every application, and there's no contract lock-in pressure: we keep customers by results, not paperwork. More on how pricing works →
When does each application go down?
The six steps above are timed to the Treasure Valley's season, not a national calendar — and they sit alongside aeration, pest treatments and sprinkler shutdown that are not part of the program. Our Treasure Valley lawn care calendar lays the whole year out month by month.
Frequently Asked Questions
When should I fertilize my lawn in Idaho?
From early spring (March–April) through late fall (November). The two most important feedings are the early-spring application with pre-emergent and the late-fall winterizer, which builds root reserves for a fast spring green-up.
What is a winterizer and do I really need it?
A winterizer is a high-nitrogen feeding applied after top growth stops but before the ground freezes. The grass stores those nutrients in its roots over winter, so it greens up earlier and thicker in spring. For Idaho lawns it's the highest-value application of the year.
Can fertilization get rid of crabgrass?
Crabgrass has to be stopped before it sprouts. We apply pre-emergent with the first spring visit, before soil temperatures reach about 55°F, then spot-treat any breakthrough during the season.
Do I need to water after an application?
Granular feedings should be watered in within 24–48 hours. Liquid weed treatments need to stay dry for the period noted on your service summary. Your technician leaves clear instructions after every visit.