Scotts Triple Action calculator

Scotts Triple Action prevents crabgrass, kills broadleaf weeds, and feeds in one pass at about 2.8 lbs per 1,000 sq ft. The spring timing is strict: it has to go down before crabgrass germinates. Enter your lawn size and ZIP for the amount, bags, and your region-specific spring window.

Label rates at a glance

Every product below has its own label rate and application limit. The calculator uses the label rate as the source of truth and reports the nitrogen it delivers, so you can compare products fairly.

ProductN-P-KRate / 1,000 sq ftBag / bottleMax apps / yr

Milorganite 6-4-06-4-012.8 lbs32 lb / 2,500 sq ft4

Scotts Turf Builder Lawn Food32-0-42.5 lbs12.5 lb / 5,000 sq ft4

Scotts Turf Builder Weed & Feed28-0-32.9 lbs14.3 lb / 5,000 sq ft2

Scotts Turf Builder Triple Action25-0-22.8 lbs11.3 lb / 4,000 sq ft2

Scotts Turf Builder Southern Lawn Food32-0-102.8 lbs14 lb / 5,000 sq ft4

The Andersons PGF Complete 16-4-816-4-83.6 lbs18 lb / 5,000 sq ft6

Lesco 24-0-1124-0-114 lbs50 lb / 12,500 sq ft4

Simple Lawn Solutions Advanced 16-4-816-4-810 fl oz / 1,000 sq ft32 oz / 3,200 sq ft6

Ironite 1-0-11-0-13 lbs15 lb / 5,000 sq ft4

Scotts Turf Builder Starter Food for New Grass24-25-43 lbs15 lb / 5,000 sq ft1 (at seeding)

Why your schedule depends on your ZIP

A Milorganite schedule in Cleveland is not a Milorganite schedule in Atlanta. Cool-season lawns feed hardest in spring and fall and skip summer nitrogen in hot regions. Warm-season lawns feed through summer and stop before their fall dormancy. The calculator shifts each product's application windows using your region's frost dates and growing season.

Cool-season lawns

Feed hardest in spring and fall. In hot regions the calculator drops summer nitrogen entirely, because feeding heat-stressed fescue or bluegrass does more harm than good.

Warm-season lawns

Feed from full green-up through late summer. The last application lands about 6 weeks before dormancy, so late-fall feedings are dropped automatically.

Your region

Northern ZIPs shift every window later; southern ZIPs shift earlier and open a longer season. The same product gets a genuinely different calendar.

Have a different bag? The fertilizer rate calculator works with any N-P-K, and the full fertilizer calculator builds a season plan from your grass type.

Rate calculator Full fertilizer plan

Scotts Turf Builder Triple Action questions, answered

When should I apply Scotts Triple Action?

Early spring, before soil temperatures hit 55°F and crabgrass germinates. The pre-emergent only works before weeds sprout, so timing to your region is critical. An optional early-fall pass targets fall weeds.

How much Scotts Triple Action do I need?

The label rate is about 2.8 lbs per 1,000 sq ft, so a 4,000 sq ft lawn uses one 11.3 lb bag. The calculator scales it to your lawn size.

Can I seed after using Triple Action?

No. Because it contains a pre-emergent, do not seed for about 4 months after applying, and do not use it on lawns seeded in the last year. Use a starter fertilizer for new seed instead.