PL7, Plymouth

PL7, Plymouth50.3928, -4.0456from your postcode

Mowing

When you can next cut it, and the best slot this weekend.

Best weekend slot

Nothing doing

Verdict: Not worth it

ground waterlogged.

Today afternoon is your first decent window.

Next mow

Today 2pm–4pm

Verdict: Touch and go, 55% chance it holds

ground firm — 13mm rain over the last week, medium (loam) soil

  • Worth watching: Ground still soft. 49mm rain over the last week, medium (loam) soil. A mower will mark it, and a ride-on will rut it. More

The next 10 days

Each row is a day, morning on the left. The more solid a block, the more of the forecast runs agree you can mow. Open a day for the hour-by-hour forecast behind it.

  1. Monday 19 October: 2 hours worth using. 2pm–4pm — ground firm — 13mm rain over the last week, medium (loam) soil
    Monday 19 October, hour by hour
    5am6am7am8am9am10am11ammidday1pm2pm3pm4pm5pm6pm7pm8pm
    Chance———————20%25%70%65%50%65%60%——
    VerdictAlready goneAlready goneAlready goneAlready goneAlready goneAlready goneAlready gonePushing itPushing itGood to goGood to goTouch and goTouch and goTouch and godarkdark
    Rainchance·······32%25%18%25%36%19%25%11%2%
    Rainmm·······0.30.20.20.30.30.10.20.1—
    Grass·······wetwetdampdampdampdampdampdampdamp
    Ground·······firmfirmfirmfirmfirmfirmfirmfirmfirm
    Temp·······11°12°13°13°13°12°12°11°10°
    Windkm/h·······19232423212015118
    Daylight·······✓✓✓✓✓✓✓——

    Growth: barely growing (growth potential 0.14). Enough to be worth cutting. Growth decides whether a cut is wanted, not how well it will go, so it is not one of the rows above and does not move the chances.Chance is the share of 94 forecast runs — the same weather models re-run from slightly different starting conditions — in which you could have mowed that hour. The rows below it are what those runs expect on average, which is why an hour can look reasonable line by line and still fall short: the chance only counts runs where everything came together at once. Hover any cell for what the runs that ruled it out actually hit.

    Monday 19 October · 2pm–4pmLow confidence this far out

    2pm–4pm — ground firm — 13mm rain over the last week, medium (loam) soil

    55% touch and go — the chance it holds right through, not the chance at any one hour. About half the runs hit rain.

    Limiting factor:ground firmness

  2. Tuesday 20 October: 7 hours worth using. midday–7pm — ground firm — 6mm rain over the last week, medium (loam) soil
    Tuesday 20 October, hour by hour
    5am6am7am8am9am10am11ammidday1pm2pm3pm4pm5pm6pm7pm8pm
    Chance———55%55%55%60%70%85%85%85%90%90%80%——
    VerdictdarkdarkdarkTouch and goTouch and goTouch and goTouch and goGood to goGood to goGood to goGood to goPrime timePrime timeGood to godarkdark
    Rainchance10%12%12%14%16%16%11%11%10%9%11%4%5%15%22%29%
    Rainmm—0.10.10.10.10.10.10.10.1—0.1——0.10.10.4
    Grassdampdampdampdampdampdampdampdampdrydrydrydrydrydrydampdamp
    Groundfirmfirmfirmfirmfirmfirmfirmfirmfirmfirmfirmfirmfirmfirmfirmfirm
    Temp9°9°9°8°9°11°12°13°14°14°14°13°14°12°12°13°
    Windkm/h5669668910141110159915
    Daylight———✓✓✓✓✓✓✓✓✓✓✓——

    Growth: barely growing (growth potential 0.19). Enough to be worth cutting. Growth decides whether a cut is wanted, not how well it will go, so it is not one of the rows above and does not move the chances.Chance is the share of 94 forecast runs — the same weather models re-run from slightly different starting conditions — in which you could have mowed that hour. The rows below it are what those runs expect on average, which is why an hour can look reasonable line by line and still fall short: the chance only counts runs where everything came together at once. Hover any cell for what the runs that ruled it out actually hit.

    Tuesday 20 October · midday–7pmLow confidence this far out

    midday–7pm — ground firm — 6mm rain over the last week, medium (loam) soil

    55% touch and go — the chance it holds right through, not the chance at any one hour. About half the runs hit rain.

    Limiting factor:ground firmness

  3. Wednesday 21 October: no hours worth using. No — 0.3mm of rain falling.
    Wednesday 21 October, hour by hour
    5am6am7am8am9am10am11ammidday1pm2pm3pm4pm5pm6pm7pm8pm
    Chance———<5%<5%<5%<5%<5%<5%45%45%55%65%60%——
    Verdictdarkdarkdarkground waterloggedground waterloggedground waterloggedground waterloggedground waterloggedground waterloggedTouch and goTouch and goTouch and goTouch and goTouch and godarkdark
    Rainchance45%34%52%31%30%23%34%26%46%35%43%32%24%26%24%36%
    Rainmm0.50.40.50.20.30.20.20.30.30.20.40.20.20.10.10.2
    Grasssoakedsoakedsoakedsoakedsoakedsoakedsoakedwetwetdampdampdampdampdampdampwet
    Groundbogbogbogbogbogbogbogbogbogsoftsoftsoftsoftsoftsoftsoft
    Temp10°10°10°9°9°10°10°11°11°11°11°11°11°10°9°9°
    Windkm/h28293331282937353636353226201514
    Daylight———✓✓✓✓✓✓✓✓✓✓✓——

    Growth: barely growing (growth potential 0.14). Enough to be worth cutting. Growth decides whether a cut is wanted, not how well it will go, so it is not one of the rows above and does not move the chances.Chance is the share of 94 forecast runs — the same weather models re-run from slightly different starting conditions — in which you could have mowed that hour. The rows below it are what those runs expect on average, which is why an hour can look reasonable line by line and still fall short: the chance only counts runs where everything came together at once. Hover any cell for what the runs that ruled it out actually hit.

    Wednesday 21 OctoberReasonably confident

    No — 0.3mm of rain falling.

    65% touch and go. About 1 run in 3 found the grass too wet.

    Limiting factor:grass wetness

  4. Thursday 22 October: no hours worth using. No — ground waterlogged.
    Thursday 22 October, hour by hour
    5am6am7am8am9am10am11ammidday1pm2pm3pm4pm5pm6pm7pm8pm
    Chance———<5%<5%5%5%10%10%25%25%15%<5%<5%——
    Verdictdarkdarkdarkground waterloggedground waterloggedForget itForget itForget itForget itPushing itPushing itPushing itground waterloggedground waterloggeddarkdark
    Rainchance24%20%34%32%33%26%37%32%31%46%50%64%54%58%55%50%
    Rainmm0.20.10.20.10.10.10.30.20.20.90.61.31.31.41.41.4
    Grasssoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoaked
    Groundbogbogbogbogbogsoftsoftsoftsoftsoftsoftsoftbogbogbogbog
    Temp9°9°9°9°10°10°11°12°13°13°13°13°13°12°12°13°
    Windkm/h171615121089121416182125293234
    Daylight———✓✓✓✓✓✓✓✓✓✓✓——

    Growth: barely growing (growth potential 0.19). Enough to be worth cutting. Growth decides whether a cut is wanted, not how well it will go, so it is not one of the rows above and does not move the chances.Chance is the share of 94 forecast runs — the same weather models re-run from slightly different starting conditions — in which you could have mowed that hour. The rows below it are what those runs expect on average, which is why an hour can look reasonable line by line and still fall short: the chance only counts runs where everything came together at once. Hover any cell for what the runs that ruled it out actually hit.

    Thursday 22 OctoberReasonably confident

    No — ground waterlogged.

    25% pushing it. About 2 runs in 3 found the ground too soft.

    Limiting factor:ground firmness

  5. Friday 23 October: nothing to cut. Nothing to cut — the grass is barely growing (growth potential 0.08).
    Friday 23 October, hour by hour
    5am6am7am8am9am10am11ammidday1pm2pm3pm4pm5pm6pm7pm8pm
    Chance———<5%<5%<5%<5%<5%<5%<5%<5%5%<5%<5%——
    Verdictnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growing
    Rainchance58%46%51%42%44%49%65%58%46%33%36%37%41%43%49%32%
    Rainmm0.60.50.50.40.40.50.80.60.30.30.50.50.50.40.40.3
    Grasssoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoaked
    Groundbogbogbogbogbogbogbogbogbogbogbogsoddenbogbogbogbog
    Temp9°9°9°9°8°8°9°10°11°10°9°8°8°8°8°8°
    Windkm/h50525351484443424035302625262725
    Daylight———✓✓✓✓✓✓✓✓✓✓✓——

    Growth: barely growing (growth potential 0.08). Not enough to be worth cutting, which is why no hour is recommended today whatever the weather does.Chance is the share of 94 forecast runs — the same weather models re-run from slightly different starting conditions — in which you could have mowed that hour. The rows below it are what those runs expect on average, which is why an hour can look reasonable line by line and still fall short: the chance only counts runs where everything came together at once. Hover any cell for what the runs that ruled it out actually hit.

    Friday 23 OctoberReasonably confident

    Nothing to cut — the grass is barely growing (growth potential 0.08).

    5% nothing to cut. Almost every run found the grass barely growing.

    Nothing to cut. The odds below describe the weather only — growth decides whether a cut is wanted, and it is judged separately.

    Limiting factor:growth

  6. Saturday 24 October: no hours worth using. No — ground waterlogged.
    Saturday 24 October, hour by hour
    5am6am7am8am9am10am11ammidday1pm2pm3pm4pm5pm6pm7pm8pm
    Chance———<5%<5%<5%<5%<5%<5%<5%<5%<5%<5%<5%——
    Verdictdarkdarkdarkground waterloggedground waterloggedground waterloggedground waterloggedground waterloggedground waterloggedground waterloggedground waterloggedground waterloggedground waterloggedground waterloggeddarkdark
    Rainchance13%13%19%9%24%19%26%19%27%27%22%27%31%27%25%31%
    Rainmm—0.10.20.10.70.20.91.31.01.71.61.81.81.61.30.6
    Grasssoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoaked
    Groundbogbogbogbogbogbogbogbogbogbogbogbogbogbogbogbog
    Temp8°7°8°8°9°10°10°10°10°10°10°11°12°14°15°15°
    Windkm/h16141212121313131519263031292727
    Daylight———✓✓✓✓✓✓✓✓✓✓✓——

    Growth: barely growing (growth potential 0.16). Enough to be worth cutting. Growth decides whether a cut is wanted, not how well it will go, so it is not one of the rows above and does not move the chances.Chance is the share of 94 forecast runs — the same weather models re-run from slightly different starting conditions — in which you could have mowed that hour. The rows below it are what those runs expect on average, which is why an hour can look reasonable line by line and still fall short: the chance only counts runs where everything came together at once. Hover any cell for what the runs that ruled it out actually hit.

    Saturday 24 OctoberReasonably confident

    No — ground waterlogged.

    <5% forget it. Almost every run found the grass too wet.

    Limiting factor:grass wetness

  7. Sunday 25 October: no hours worth using. No — 1.2mm of rain falling.
    Sunday 25 October, hour by hour
    5am6am7am8am9am10am11ammidday1pm2pm3pm4pm5pm6pm7pm8pm
    Chance——<5%<5%<5%<5%<5%<5%<5%<5%<5%<5%<5%———
    Verdictdarkdarkground waterloggedground waterloggedground waterloggedground waterloggedground waterloggedForget itForget itForget itForget itForget itForget itdarkdarkdark
    Rainchance29%33%29%25%20%29%29%16%24%14%37%25%25%24%14%25%
    Rainmm0.50.60.50.40.20.40.40.40.30.10.50.40.30.20.30.4
    Grasssoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoaked
    Groundbogbogbogbogbogbogbogsoddensoddensoddensoddensoddensoddensoddensoddensodden
    Temp16°16°16°16°15°15°15°14°14°13°13°13°12°12°12°12°
    Windkm/h29303234363940414141403837353332
    Daylight——✓✓✓✓✓✓✓✓✓✓✓———

    Growth: growing slowly (growth potential 0.35). Enough to be worth cutting. Growth decides whether a cut is wanted, not how well it will go, so it is not one of the rows above and does not move the chances.Chance is the share of 94 forecast runs — the same weather models re-run from slightly different starting conditions — in which you could have mowed that hour. The rows below it are what those runs expect on average, which is why an hour can look reasonable line by line and still fall short: the chance only counts runs where everything came together at once. Hover any cell for what the runs that ruled it out actually hit.

    Sunday 25 OctoberReasonably confident

    No — 1.2mm of rain falling.

    <5% forget it. Almost every run found the grass too wet.

    Limiting factor:grass wetness

  8. Monday 26 October: no hours worth using. No — 0.2mm of rain falling.
    Monday 26 October, hour by hour
    5am6am7am8am9am10am11ammidday1pm2pm3pm4pm5pm6pm7pm8pm
    Chance——<5%<5%<5%<5%<5%<5%<5%<5%<5%<5%<5%———
    Verdictdarkdarkground waterloggedground waterloggedground waterloggedground waterloggedground waterloggedground waterloggedground waterloggedForget itForget itForget itForget itdarkdarkdark
    Rainchance22%22%35%18%14%22%25%20%37%18%24%25%33%20%33%22%
    Rainmm0.30.50.80.20.40.20.70.60.70.60.40.60.70.60.40.9
    Grasssoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoaked
    Groundsoddenbogbogbogbogbogbogbogbogsoddensoddensoddensoddensoddensoddensodden
    Temp12°12°12°13°14°14°15°15°15°15°14°14°14°14°14°14°
    Windkm/h2020181412141719171384691216
    Daylight——✓✓✓✓✓✓✓✓✓✓✓———

    Growth: growing slowly (growth potential 0.30). Enough to be worth cutting. Growth decides whether a cut is wanted, not how well it will go, so it is not one of the rows above and does not move the chances.Chance is the share of 94 forecast runs — the same weather models re-run from slightly different starting conditions — in which you could have mowed that hour. The rows below it are what those runs expect on average, which is why an hour can look reasonable line by line and still fall short: the chance only counts runs where everything came together at once. Hover any cell for what the runs that ruled it out actually hit.

    Monday 26 OctoberReasonably confident

    No — 0.2mm of rain falling.

    <5% forget it. Almost every run found the grass too wet.

    Limiting factor:grass wetness

  9. Tuesday 27 October: no hours worth using. No — 0.3mm of rain falling.
    Tuesday 27 October, hour by hour
    5am6am7am8am9am10am11ammidday1pm2pm3pm4pm5pm6pm7pm8pm
    Chance——<5%<5%<5%<5%<5%<5%<5%<5%<5%<5%<5%———
    Verdictdarkdarkground waterloggedground waterloggedground waterloggedground waterloggedground waterloggedground waterloggedground waterloggedground waterloggedForget itForget itForget itdarkdarkdark
    Rainchance35%20%31%24%24%27%22%29%20%27%29%39%16%22%14%12%
    Rainmm0.60.60.40.50.60.40.30.80.20.30.50.50.40.10.10.1
    Grasssoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedwetwetsoakedsoakedsoaked
    Groundbogbogbogbogbogbogbogbogbogbogsoddensoddensoddensoddensoddensodden
    Temp15°15°15°15°15°15°15°15°15°14°14°14°14°13°13°13°
    Windkm/h29292828282829302928272524232222
    Daylight——✓✓✓✓✓✓✓✓✓✓✓———

    Growth: growing steadily (growth potential 0.36). Enough to be worth cutting. Growth decides whether a cut is wanted, not how well it will go, so it is not one of the rows above and does not move the chances.Chance is the share of 94 forecast runs — the same weather models re-run from slightly different starting conditions — in which you could have mowed that hour. The rows below it are what those runs expect on average, which is why an hour can look reasonable line by line and still fall short: the chance only counts runs where everything came together at once. Hover any cell for what the runs that ruled it out actually hit.

    Tuesday 27 OctoberLow confidence this far out

    No — 0.3mm of rain falling.

    <5% forget it. Almost every run found the grass too wet.

    Limiting factor:grass wetness

  10. Wednesday 28 October: no hours worth using. No — 0.7mm of rain falling.
    Wednesday 28 October, hour by hour
    5am6am7am8am9am10am11ammidday1pm2pm3pm4pm5pm6pm7pm8pm
    Chance———<5%<5%<5%<5%<5%<5%<5%<5%<5%————
    Verdictdarkdarkdarkground waterloggedground waterloggedground waterloggedground waterloggedground waterloggedground waterloggedground waterloggedground waterloggedground waterloggeddarkdarkdarkdark
    Rainchance27%8%24%12%16%16%18%18%16%22%20%20%12%25%12%10%
    Rainmm0.2—0.10.10.10.10.10.10.10.10.10.10.10.20.10.1
    Grasssoakedwetwetwetwetwetwetwetwetdampwetwetwetwetwetwet
    Groundbogbogbogbogbogbogbogbogbogbogbogbogbogbogbogbog
    Temp13°13°13°13°14°14°14°15°15°14°14°14°14°14°14°14°
    Windkm/h23232424242425262729323435363533
    Daylight———✓✓✓✓✓✓✓✓✓————

    Growth: growing slowly (growth potential 0.30). Enough to be worth cutting. Growth decides whether a cut is wanted, not how well it will go, so it is not one of the rows above and does not move the chances.Chance is the share of 94 forecast runs — the same weather models re-run from slightly different starting conditions — in which you could have mowed that hour. The rows below it are what those runs expect on average, which is why an hour can look reasonable line by line and still fall short: the chance only counts runs where everything came together at once. Hover any cell for what the runs that ruled it out actually hit.

    Wednesday 28 OctoberLow confidence this far out

    No — 0.7mm of rain falling.

    <5% forget it. Almost every run found the grass too wet.

    Limiting factor:grass wetness

good to go touch and go dark, frost or snow already goneFainter means fewer forecast runs agree.

How you feel about mowing

Sensible middle ground.

Petrol or battery. The baseline.

Growth

How fast it is growing, and when it will need cutting again.

14%Barely growing

Of the fastest this grass could grow. The turf-industry measure, from today's temperature and day length.

The lawn is barely growing, so it does not need cutting. Leave it — taking leaf off a sward that cannot replace it costs more than it gives.

Held back by both temperature and short days — 10.5 hours of daylight at 10°C.

Over the next 10 days
about 8mm of leaf
Next cut due
not within the next ten days

This only knows temperature and day length. Feeding, watering, shade and cutting height all move it, so treat it as a rough guide.

Worked out from the PACE Turf growth potential model and day length —how and why.

Seeding

Soil temperature at germination depth, and when the window opens.

Soil temperature in PL7, Plymouth

11.6°C53°F

at 6cm — germination depth

Seeding conditions are open — soil is 11.6°C at 6cm and holding above 9°C.

Warming over the next 10 days.

Cross-checks against an independent estimate from air temperature (11.0°C), which agrees to within 0.5°C.

Almost every UK and Irish lawn is a ryegrass and fescue mix, whether it was sown or turfed. We assume that, and use 9°C as the seeding threshold.

Thresholds for every species

The differences are small. Ryegrass is the quickest off the mark; bluegrass is the slowest and wants the warmest soil. Everything else sits between.

Soil temperature at 6cm for reliable germination. Sources onthe method page.
SpeciesSoil neededDays to sprout
Perennial ryegrasslikely yours8°C5–10
Red / chewings fescuelikely yours8–10°C10–14
Tall fescue10–12°C10–14
Browntop bentColonial bentgrass10–12°C14–21
Smooth-stalked meadow grassKentucky bluegrass12–13°C14–28

Feeding

Why timing decides whether a feed does anything at all.

Coming in the app

Grass takes up nitrogen when it is growing. Feed a lawn that has stopped and most of it washes past the roots — which is why timing beats product choice.

Right now this lawn is not growing fast enough to make much use of a feed.

The app will work out the actual feeding windows for your lawn — along with weed control, scarifying and moss treatment — and tell you when they open without you having to check.

Why timing beats product choice

PL7, Plymouth in detail

Soil temperature in PL7, Plymouth is currently 11.6°C at 6cm, and rising about 2.1°C over the next 10 days. That depth matters because it is where grass seed sits and where roots start working, and it lags air temperature by days — which is why a warm afternoon here tells you very little on its own.

Lawns in this area are typically perennial ryegrass with fescue, which is what most lawns round here are sown with. That blend needs the soil to hold above 9°C before seed germinates reliably. Seeding conditions are open — soil is 11.6°C at 6cm and holding above 9°C.

4 of the next 10 days look workable. The other 6 are held back by wet grass or soft ground. As for the weekend: nothing doing. ground waterlogged.

The next recommended window in PL7 opens at 2pm on Monday 19 October, because that is when the dew has burnt off — earlier than that and you are cutting wet grass. Underfoot, the ground reads as firm after 13mm rain over the last week, medium (loam) soil.

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Chances counted across 94 forecast runs from MOGREPS-UK, 2km and ICON-EU-EPS, 7km and ECMWF IFS ensemble, 25km. Forecast from Open-Meteo, refreshed through the day. Soil temperature is modelled, not measured — how that works and where the thresholds come from.