What a schedule is, and why it matters
A program is how often a zone runs and for how many minutes. Those minutes only help if the heads already reach and the soil can swallow the water.
Most GTA lawns want about an inch of water a week in high summer, less in spring and fall. How you get that inch depends on the head type. A spray may do it in fewer minutes than a rotor. They should not copy each other.
How time should be built
You set a start time, a run time, and a number of days. If water sheets off, you split the run. You do not keep stacking minutes on a soil that already said no.
The lawn can only drink so fast
One long run sheets off. Two shorter cycles let the same inches soak in. Dawn still beats evening.
How the clock affects the lawn
A 6 a.m. start on a still morning keeps the water on the lot. A 5 p.m. start on a windy day throws mist onto the walk. Same minutes. Different lawn.
Too little time
The middle never wets at the root. Colour fades first on the high, sunny bank.
In range
The soil is wet a few inches down. The surface dries during the day. This is the goal.
Too much, or at the wrong hour
Runoff, mushrooms, or a bill that jumped while the far corner stayed pale.
What you are seeing after a week
If the walk is wet at noon and the grass is still pale, you watered fog or hardscape. If the soil is soggy and the leaf is yellow, you watered too often.
This is why the first move is not plus five minutes. Watch one zone at dawn, then change one thing.
Common problems
Clock trouble is usually a copied program, not a broken controller.
Every zone on the same minutes
Sprays and rotors cannot share a run time. One will flood. One will starve.
Watering at dinner
Wind and heat take the water. You pay for a show the neighbours can see.
No rain skip
The system ran through a wet week. The lawn did not need the extra inch.
One long soak on clay
The soil sealed. Water left. Cycle-and-soak would have kept it on the lot.
What to look for
After a scheduled run, check the lawn before the sun is high.
- Is the soil wet a few inches down, or only on the surface?
- Did water run onto the walk or the street?
- Are spray zones and rotor zones on different minutes?
- Does the program start near dawn?
- Did someone copy a neighbour's run time onto this lot?
Customer tips
Small changes on the clock beat a wholesale jump in minutes.
Change one thing
Move the start time to dawn, or split a long run, before you add five minutes to every zone.
Do not copy the neighbour
Their heads, soil, and sun are not yours. Their program will not land the same.
Use a cup or a screwdriver
A tuna can on the lawn, or a blade in the soil, tells you if the inch arrived.
When to consider a sensor
A rain skip or a seasonal adjust stops the system from watering a wet week. It does not fix a zone that cannot reach.
When to call a professional
Call when every zone is on the same minutes, when runoff starts before the program ends, or when the far corner stays dry no matter the clock.
Key takeaways
- Minutes only help after the water already lands on the grass.
- Dawn is the default start. Wind and heat waste an evening run.
- Sprays and rotors need different run times.
- An inch a week is a starting point, not a copy-paste number.
- If water is leaving the lot, split the run. Do not add minutes.