Brandon, Florida
Best weekend slot
Saturday 8am–10am
Verdict: Good
growing slowly — growth potential 0.26
Next mow
Tomorrow 6pm–8pm
Verdict: Good
cool — 26°C
The next 10 days
Column height is how mowable the day is; the lighter band is the best stretch within it. The line is soil temperature at 6cm. It crosses the seeding threshold inside this forecast.
12.5°C — seeding
Soil at 6cm 27.2°C cooling to 0.0°C
Tuesday 1 September: Not worth it. No — heat stress, 27°C.
Tuesday 1 SeptemberConfident
No — heat stress, 27°C.
- Good:Grass wetness
- Grass dryno rain since Monday
- Good:Ground firmness
- Ground firm9mm rain over the last week
- Good:Growth
- Growing steadilygrowth potential 0.40
- Marginal:Temperature
- Cool25°C
- Good:Wind
- Wind light6 km/h
Limiting factor:temperature
Wednesday 2 September: Good. 6pm–8pm — cool — 26°C
Wednesday 2 September · 6pm–8pmConfident
6pm–8pm — cool — 26°C
- Marginal:Grass wetness
- Grass dryrain earlier today
- Good:Ground firmness
- Ground firm10mm rain over the last week
- Good:Growth
- Growing steadilygrowth potential 0.46
- Poor:Temperature
- Cool26°C
- Good:Wind
- Wind light5 km/h
- Sociable hours
- A bit early or late, but finestarts when it stops being antisocial
Limiting factor:temperature
Thursday 3 September: Good. 8am–11am — ground firm — 13mm rain over the last week
Thursday 3 September · 8am–11amConfident
8am–11am — ground firm — 13mm rain over the last week
- Marginal:Grass wetness
- Grass dryrain earlier today
- Good:Ground firmness
- Ground firm13mm rain over the last week
- Good:Growth
- Growing steadilygrowth potential 0.45
- Poor:Temperature
- Cool24°C
- Good:Wind
- Wind light8 km/h
- Sociable hours
- A bit early or late, but finestarts at first light
Limiting factor:ground firmness
Friday 4 September: Good. No — 0.7mm of rain falling.
Friday 4 SeptemberConfident
No — 0.7mm of rain falling.
- Marginal:Grass wetness
- Grass drydried off since a shower 0 hours ago
- Good:Ground firmness
- Ground soft in places29mm rain over the last week
- Good:Growth
- Growing steadilygrowth potential 0.36
- Poor:Temperature
- Cool25°C
- Good:Wind
- Wind light8 km/h
Limiting factor:temperature
Saturday 5 September: Good. 8am–10am — growing slowly — growth potential 0.26
Saturday 5 September · 8am–10amReasonably confident
8am–10am — growing slowly — growth potential 0.26
- Good:Grass wetness
- Grass dryrain earlier today
- Good:Ground firmness
- Ground firm39mm rain over the last week
- Marginal:Growth
- Growing slowlygrowth potential 0.26
- Poor:Temperature
- Heat stress26°C
- Good:Wind
- Wind light8 km/h
- Sociable hours
- A bit early or late, but finestarts at first light
Limiting factor:growth
Sunday 6 September: Good. No — 0.6mm of rain falling.
Sunday 6 SeptemberReasonably confident
No — 0.6mm of rain falling.
- Good:Grass wetness
- Grass drydried off since a shower 3 hours ago
- Good:Ground firmness
- Ground firm40mm rain over the last week
- Marginal:Growth
- Growing slowlygrowth potential 0.27
- Poor:Temperature
- Heat stress26°C
- Good:Wind
- Wind light10 km/h
Limiting factor:growth
Monday 7 September: Good. No — 0.1mm of rain falling.
Monday 7 SeptemberReasonably confident
No — 0.1mm of rain falling.
- Marginal:Grass wetness
- Grass drydried off since a shower 0 hours ago
- Good:Ground firmness
- Ground firm41mm rain over the last week
- Marginal:Growth
- Growing slowlygrowth potential 0.31
- Poor:Temperature
- Heat stress26°C
- Good:Wind
- Wind light10 km/h
Limiting factor:growth
Tuesday 8 September: Good. No — 0.2mm of rain falling.
Tuesday 8 SeptemberReasonably confident
No — 0.2mm of rain falling.
- Good:Grass wetness
- Grass dryrain earlier today
- Good:Ground firmness
- Ground firm48mm rain over the last week
- Marginal:Growth
- Growing slowlygrowth potential 0.27
- Poor:Temperature
- Heat stress26°C
- Good:Wind
- Wind light4 km/h
Limiting factor:growth
Wednesday 9 September: Not worth it. No — ground frozen.
Wednesday 9 SeptemberLow confidence this far out
No — ground frozen.
- Good:Grass wetness
- Grass dryrain earlier today
- Good:Ground firmness
- Ground firm51mm rain over the last week
- Marginal:Growth
- Growing slowlygrowth potential 0.24
- Poor:Temperature
- Heat stress26°C
- Good:Wind
- Wind light4 km/h
Limiting factor:growth
Thursday 10 September: Not worth it. No — ground frozen.
Thursday 10 SeptemberLow confidence this far out
No — ground frozen.
- Good:Grass wetness
- Grass dryno rain since Tuesday
- Good:Ground firmness
- Ground firm48mm rain over the last week
- Marginal:Growth
- Growing slowlygrowth potential 0.23
- Poor:Temperature
- Heat stress26°C
- Good:Wind
- Wind light4 km/h
Limiting factor:growth
Soil temperature
82°F27.6°C
at 6cm — germination depth
Cooling over the next 11 days.
Too warm to seed — the soil is heat-stressed. Wait for it to cool.
Most cool-season lawns in the northern US and Canada are bluegrass, tall fescue, or a mix of the two. We assume that, and use12.5°C as the seeding threshold.
I know what grass I have
The differences are small. Ryegrass is the quickest off the mark; bluegrass is the slowest and wants the warmest soil. Everything else sits between.
| Species | Soil temp | Days |
|---|---|---|
| Perennial ryegrass | 8°C | 5–10 |
| Red / chewings fescue | 8–10°C | 10–14 |
| Tall fescuelikely yours | 10–12°C | 10–14 |
| Browntop bentColonial bentgrass | 10–12°C | 14–21 |
| Smooth-stalked meadow grassKentucky bluegrasslikely yours | 12–13°C | 14–28 |
What this means right now
Warning: Too warm to seed
Too warm to seed — the soil is heat-stressed. Wait for it to cool.
Warning: Heat stress
Tuesday 1 September gets hot enough to stress the sward. Mow early or late, and raise the height.
Forecast from Open-Meteo, refreshed hourly. Soil temperature is modelled, not measured — how that works and where the thresholds come from.