Kentucky Bluegrass Seed Rate Calculator
Calculate Kentucky bluegrass seeding rate in pounds per 1,000 square feet from a target live seed rate, with pure live seed and bag counts.
How This Calculation Works
Bulk pounds per acre equals the target live seeds per acre divided by seeds per pound, then divided by the pure live seed fraction. Kentucky bluegrass has about 1.1 million seeds per pound, so 1.5 million live seeds per acre needs about 1.6 pounds of bulk seed at 81 percent PLS. Dividing by 43.56 gives pounds per 1,000 square feet.
Field Calibration & Rate Reference Chart
| Species | Seeds/lb | Target seeds/ac | Bulk lb/ac |
|---|---|---|---|
| Tall fescue | 227,000 | 3,000,000 | 15 |
| Kentucky bluegrass | 1,100,000 | 1,500,000 | 2 |
| Perennial ryegrass | 227,000 | 4,000,000 | 20 |
| Bermudagrass hulled | 1,900,000 | 2,000,000 | 1 |
| Bermudagrass unhulled | 800,000 | 2,000,000 | 3 |
| Alfalfa | 200,000 | 5,000,000 | 28 |
| Winter wheat | 12,000 | 1,200,000 | 105 |
| Soybean | 2,800 | 160,000 | 63 |
| Corn | 1,400 | 34,000 | 27 |
| Cereal rye | 18,000 | 1,200,000 | 73 |
Common Questions
How much Kentucky bluegrass seed per 1,000 square feet?
New lawns take about 2 to 3 pounds per 1,000 square feet, while overseeding uses 1 to 2 pounds. The rhizomes fill in gaps, so lower rates still produce a full stand. Adjust for the seed tag's pure live seed.
How many seeds per pound does Kentucky bluegrass have?
Kentucky bluegrass has roughly 1.1 million seeds per pound, more than most cool-season grasses. That small seed size means a low bulk rate. Use the seed tag value when available.
Why does Kentucky bluegrass take so long to germinate?
Its seed germinates in about 14 to 30 days, slower than ryegrass or fescue. Cool soil and dry surface conditions slow it further. Keeping the seedbed consistently moist is the key to establishment.
Can I mix Kentucky bluegrass with other grasses?
Yes, it is often blended with tall fescue and perennial ryegrass for a mix that establishes quickly and spreads over time. The ryegrass provides quick cover while the bluegrass fills in. Adjust the blend rate to the desired final composition.